2005-04-18 22:42:35 +08:00
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PostgreSQL TODO List
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====================
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2006-06-19 03:34:00 +08:00
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Current maintainer: Bruce Momjian (bruce@momjian.us)
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2008-08-20 03:19:53 +08:00
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Last updated: Tue Aug 19 15:19:46 EDT 2008
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1996-08-19 06:14:33 +08:00
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2005-04-22 21:38:19 +08:00
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The most recent version of this document can be viewed at
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http://www.postgresql.org/docs/faqs.TODO.html.
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1996-10-04 23:15:24 +08:00
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2008-04-29 07:08:33 +08:00
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#A hyphen, "-", marks changes that will appear in the upcoming 8.4 release.#
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2005-08-24 22:05:37 +08:00
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#A percent sign, "%", marks items that are easier to implement.#
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2004-11-30 13:03:47 +08:00
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This list contains all known PostgreSQL bugs and feature requests. If
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2004-11-30 13:06:33 +08:00
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you would like to work on an item, please read the Developer's FAQ
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2007-01-20 10:18:37 +08:00
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first. There is also a developer's wiki at
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http://developer.postgresql.org.
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2003-10-09 05:44:06 +08:00
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1999-06-07 10:42:07 +08:00
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2002-04-26 04:20:50 +08:00
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Administration
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==============
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2002-01-23 05:55:06 +08:00
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2008-04-18 04:57:07 +08:00
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* -Allow administrators to safely terminate individual sessions either
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2007-08-28 11:00:36 +08:00
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via an SQL function or SIGTERM
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Update TODO list based on 8.3 completed items:
< * Allow major upgrades without dump/reload, perhaps using pg_upgrade
< [pg_upgrade]
< * Check for unreferenced table files created by transactions that were
< in-progress when the server terminated abruptly
<
< http://archives.postgresql.org/pgsql-patches/2006-06/msg00096.php
<
> * Check for unreferenced table files created by transactions that were
> in-progress when the server terminated abruptly
>
> http://archives.postgresql.org/pgsql-patches/2006-06/msg00096.php
>
< * Support table partitioning that allows a single table to be stored
< in subtables that are partitioned based on the primary key or a WHERE
< clause
< creation of rules for INSERT/UPDATE/DELETE, and constraints for
< rapid partition selection. Options could include range and hash
> creation of triggers or rules for INSERT/UPDATE/DELETE, and constraints
> for rapid partition selection. Options could include range and hash
<
< * Improve replication solutions
<
< o Load balancing
<
< You can use any of the master/slave replication servers to use a
< standby server for data warehousing. To allow read/write queries to
< multiple servers, you need multi-master replication like pgcluster.
<
< o Allow replication over unreliable or non-persistent links
<
<
< o Mark change-on-restart-only values in postgresql.conf
< All objects in the default database tablespace must have default
< tablespace specifications. This is because new databases are
< created by copying directories. If you mix default tablespace
< tables and tablespace-specified tables in the same directory,
< creating a new database from such a mixed directory would create a
< new database with tables that had incorrect explicit tablespaces.
< To fix this would require modifying pg_class in the newly copied
< database, which we don't currently do.
> Currently all objects in the default database tablespace must
> have default tablespace specifications. This is because new
> databases are created by copying directories. If you mix default
> tablespace tables and tablespace-specified tables in the same
> directory, creating a new database from such a mixed directory
> would create a new database with tables that had incorrect
> explicit tablespaces. To fix this would require modifying
> pg_class in the newly copied database, which we don't currently
> do.
<
< o Allow recovery.conf to allow the same syntax as
> o Allow recovery.conf to support the same syntax as
< * Allow user-defined types to specify a type modifier at table creation
< time
< * Allow all data types to cast to and from TEXT
<
< http://archives.postgresql.org/pgsql-hackers/2007-04/msg00017.php
<
<
< o Add support for year-month syntax, INTERVAL '50-6' YEAR TO MONTH
< o Interpret INTERVAL '1 year' MONTH as CAST (INTERVAL '1 year' AS
< INTERVAL MONTH), and this should return '12 months'
> o Add support for year-month syntax, INTERVAL '50-6' YEAR
> TO MONTH
> o Interpret INTERVAL '1 year' MONTH as CAST (INTERVAL '1
> year' AS INTERVAL MONTH), and this should return '12 months'
< * Allow MONEY to be cast to/from other numeric data types
> * Allow MONEY to be easily cast to/from other numeric data types
>
< * Allow functions to have a schema search path specified at creation time
< * Fix cases where invalid byte encodings are accepted by the database,
< but throw an error on SELECT
<
< http://archives.postgresql.org/pgsql-hackers/2007-03/msg00767.php
< * Improve logging of prepared statements recovered during startup
> * Improve logging of prepared transactions recovered during startup
< * Make standard_conforming_strings the default in 8.4?
> * Make standard_conforming_strings the default in 8.5?
< * Allow the count returned by SELECT, etc to be to represent as an int64
> * Allow the count returned by SELECT, etc to be represented as an int64
< o Use more reliable method for CREATE DATABASE to get a consistent
< copy of db?
< o Fix transaction restriction checks for CREATE DATABASE and
< other commands
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00133.php
< currently allowed.
> currently allowed. This currently is done if the table is
> created inside the same transaction block as the COPY because
> no other backends can see the table.
< o Add SET PATH for schemas?
<
< This is basically the same as SET search_path.
< o Enforce referential integrity for system tables
< o Add Oracle-style packages (Pavel)
<
< A package would be a schema with session-local variables,
< public/private functions, and initialization functions. It
< is also possible to implement these capabilities
< in all schemas and not use a separate "packages"
< syntax at all.
<
< http://archives.postgresql.org/pgsql-hackers/2006-08/msg00384.php
<
< o Add single-step debugging of functions
< o Allow RETURN to return row or record functions
<
< http://archives.postgresql.org/pgsql-patches/2005-11/msg00045.php
< http://archives.postgresql.org/pgsql-patches/2006-08/msg00397.php
< http://archives.postgresql.org/pgsql-hackers/2006-09/msg00388.php
<
< o Fix problems with RETURN NEXT on tables with
< dropped/added columns after function creation
<
< http://archives.postgresql.org/pgsql-patches/2006-02/msg00165.php
<
< * Make consistent use of long/short command options --- pg_ctl needs
< long ones, pg_config doesn't have short ones, postgres doesn't have
< enough long ones, etc.
<
<
<
< o Consider parsing the -c string into individual queries so each
< is run in its own transaction
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00291.php
<
<
< o Remove unnecessary function pointer abstractions in pg_dump source
< code
> o Remove unnecessary function pointer abstractions in pg_dump source
> code
<
<
< o Fix SSL retry to avoid useless repeated connection attempts and
< ensuing misleading error messages
>
<
< This is difficult because it requires datatype-specific knowledge.
<
< * Improve commit_delay handling to reduce fsync()
< * %Add an option to sync() before fsync()'ing checkpoint files
>
< * Reduce lock time during VACUUM FULL by moving tuples with read lock,
< then write lock and truncate table
<
< Moved tuples are invisible to other backends so they don't require a
< write lock. However, the read lock promotion to write lock could lead
< to deadlock situations.
<
< * Prevent long-lived temporary tables from causing frozen-xid advancement
< starvation
<
< The problem is that autovacuum cannot vacuum them to set frozen xids;
< only the session that created them can do that.
<
<
<
< o Use free-space map information to guide refilling
< o Consider logging activity either to the logs or a system view
> The problem is that autovacuum cannot vacuum them to set frozen xids;
> only the session that created them can do that.
< * Add connection pooling
<
< It is unclear if this should be done inside the backend code or done
< by something external like pgpool. The passing of file descriptors to
< existing backends is one of the difficulties with a backend approach.
<
< * Consider reducing memory used for shared buffer reference count
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00752.php
<
< * %Remove memory/file descriptor freeing before ereport(ERROR)
< * %Promote debug_query_string into a server-side function current_query()
< * Allow ecpg to work with MSVC and BCC
< * Add xpath_array() to /contrib/xml2 to return results as an array
< * Allow building in directories containing spaces
<
< This is probably not possible because 'gmake' and other compiler tools
< do not fully support quoting of paths with spaces.
<
< * Fix sgmltools so PDFs can be generated with bookmarks
< * Split out libpq pgpass and environment documentation sections to make
< it easier for non-developers to find
< * Use strlcpy() rather than our StrNCpy() macro
<
< http://archives.postgresql.org/pgsql-hackers/2006-09/msg02108.php
<
< o Re-enable timezone output on log_line_prefix '%t' when a
< shorter timezone string is available
< * Allow statements across databases or servers with transaction
< semantics
<
< This can be done using dblink and two-phase commit.
> * Add Oracle-style packages (Pavel)
< * Add the features of packages
> A package would be a schema with session-local variables,
> public/private functions, and initialization functions. It
> is also possible to implement these capabilities
> in any schema and not use a separate "packages"
> syntax at all.
< o Make private objects accessible only to objects in the same schema
< o Allow current_schema.objname to access current schema objects
< o Add session variables
< o Allow nested schemas
> http://archives.postgresql.org/pgsql-hackers/2006-08/msg00384.php
2007-12-30 11:22:53 +08:00
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* Check for unreferenced table files created by transactions that were
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in-progress when the server terminated abruptly
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http://archives.postgresql.org/pgsql-patches/2006-06/msg00096.php
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2007-04-18 04:47:55 +08:00
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* Set proper permissions on non-system schemas during db creation
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2004-10-18 10:56:42 +08:00
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2007-04-18 04:50:34 +08:00
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Currently all schemas are owned by the super-user because they are copied
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from the template1 database. However, since all objects are inherited
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from the template database, it is not clear that setting schemas to the db
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owner is correct.
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2004-10-18 10:56:42 +08:00
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2008-05-07 00:14:29 +08:00
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* -Add function to report the time of the most recent server reload
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2006-04-11 05:06:23 +08:00
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* Allow log_min_messages to be specified on a per-module basis
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This would allow administrators to see more detailed information from
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specific sections of the backend, e.g. checkpoints, autovacuum, etc.
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2006-04-27 23:56:17 +08:00
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Another idea is to allow separate configuration files for each module,
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or allow arbitrary SET commands to be passed to them.
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2004-11-02 22:49:27 +08:00
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2006-09-03 07:47:39 +08:00
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* Simplify ability to create partitioned tables
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This would allow creation of partitioned tables without requiring
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Update TODO list based on 8.3 completed items:
< * Allow major upgrades without dump/reload, perhaps using pg_upgrade
< [pg_upgrade]
< * Check for unreferenced table files created by transactions that were
< in-progress when the server terminated abruptly
<
< http://archives.postgresql.org/pgsql-patches/2006-06/msg00096.php
<
> * Check for unreferenced table files created by transactions that were
> in-progress when the server terminated abruptly
>
> http://archives.postgresql.org/pgsql-patches/2006-06/msg00096.php
>
< * Support table partitioning that allows a single table to be stored
< in subtables that are partitioned based on the primary key or a WHERE
< clause
< creation of rules for INSERT/UPDATE/DELETE, and constraints for
< rapid partition selection. Options could include range and hash
> creation of triggers or rules for INSERT/UPDATE/DELETE, and constraints
> for rapid partition selection. Options could include range and hash
<
< * Improve replication solutions
<
< o Load balancing
<
< You can use any of the master/slave replication servers to use a
< standby server for data warehousing. To allow read/write queries to
< multiple servers, you need multi-master replication like pgcluster.
<
< o Allow replication over unreliable or non-persistent links
<
<
< o Mark change-on-restart-only values in postgresql.conf
< All objects in the default database tablespace must have default
< tablespace specifications. This is because new databases are
< created by copying directories. If you mix default tablespace
< tables and tablespace-specified tables in the same directory,
< creating a new database from such a mixed directory would create a
< new database with tables that had incorrect explicit tablespaces.
< To fix this would require modifying pg_class in the newly copied
< database, which we don't currently do.
> Currently all objects in the default database tablespace must
> have default tablespace specifications. This is because new
> databases are created by copying directories. If you mix default
> tablespace tables and tablespace-specified tables in the same
> directory, creating a new database from such a mixed directory
> would create a new database with tables that had incorrect
> explicit tablespaces. To fix this would require modifying
> pg_class in the newly copied database, which we don't currently
> do.
<
< o Allow recovery.conf to allow the same syntax as
> o Allow recovery.conf to support the same syntax as
< * Allow user-defined types to specify a type modifier at table creation
< time
< * Allow all data types to cast to and from TEXT
<
< http://archives.postgresql.org/pgsql-hackers/2007-04/msg00017.php
<
<
< o Add support for year-month syntax, INTERVAL '50-6' YEAR TO MONTH
< o Interpret INTERVAL '1 year' MONTH as CAST (INTERVAL '1 year' AS
< INTERVAL MONTH), and this should return '12 months'
> o Add support for year-month syntax, INTERVAL '50-6' YEAR
> TO MONTH
> o Interpret INTERVAL '1 year' MONTH as CAST (INTERVAL '1
> year' AS INTERVAL MONTH), and this should return '12 months'
< * Allow MONEY to be cast to/from other numeric data types
> * Allow MONEY to be easily cast to/from other numeric data types
>
< * Allow functions to have a schema search path specified at creation time
< * Fix cases where invalid byte encodings are accepted by the database,
< but throw an error on SELECT
<
< http://archives.postgresql.org/pgsql-hackers/2007-03/msg00767.php
< * Improve logging of prepared statements recovered during startup
> * Improve logging of prepared transactions recovered during startup
< * Make standard_conforming_strings the default in 8.4?
> * Make standard_conforming_strings the default in 8.5?
< * Allow the count returned by SELECT, etc to be to represent as an int64
> * Allow the count returned by SELECT, etc to be represented as an int64
< o Use more reliable method for CREATE DATABASE to get a consistent
< copy of db?
< o Fix transaction restriction checks for CREATE DATABASE and
< other commands
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00133.php
< currently allowed.
> currently allowed. This currently is done if the table is
> created inside the same transaction block as the COPY because
> no other backends can see the table.
< o Add SET PATH for schemas?
<
< This is basically the same as SET search_path.
< o Enforce referential integrity for system tables
< o Add Oracle-style packages (Pavel)
<
< A package would be a schema with session-local variables,
< public/private functions, and initialization functions. It
< is also possible to implement these capabilities
< in all schemas and not use a separate "packages"
< syntax at all.
<
< http://archives.postgresql.org/pgsql-hackers/2006-08/msg00384.php
<
< o Add single-step debugging of functions
< o Allow RETURN to return row or record functions
<
< http://archives.postgresql.org/pgsql-patches/2005-11/msg00045.php
< http://archives.postgresql.org/pgsql-patches/2006-08/msg00397.php
< http://archives.postgresql.org/pgsql-hackers/2006-09/msg00388.php
<
< o Fix problems with RETURN NEXT on tables with
< dropped/added columns after function creation
<
< http://archives.postgresql.org/pgsql-patches/2006-02/msg00165.php
<
< * Make consistent use of long/short command options --- pg_ctl needs
< long ones, pg_config doesn't have short ones, postgres doesn't have
< enough long ones, etc.
<
<
<
< o Consider parsing the -c string into individual queries so each
< is run in its own transaction
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00291.php
<
<
< o Remove unnecessary function pointer abstractions in pg_dump source
< code
> o Remove unnecessary function pointer abstractions in pg_dump source
> code
<
<
< o Fix SSL retry to avoid useless repeated connection attempts and
< ensuing misleading error messages
>
<
< This is difficult because it requires datatype-specific knowledge.
<
< * Improve commit_delay handling to reduce fsync()
< * %Add an option to sync() before fsync()'ing checkpoint files
>
< * Reduce lock time during VACUUM FULL by moving tuples with read lock,
< then write lock and truncate table
<
< Moved tuples are invisible to other backends so they don't require a
< write lock. However, the read lock promotion to write lock could lead
< to deadlock situations.
<
< * Prevent long-lived temporary tables from causing frozen-xid advancement
< starvation
<
< The problem is that autovacuum cannot vacuum them to set frozen xids;
< only the session that created them can do that.
<
<
<
< o Use free-space map information to guide refilling
< o Consider logging activity either to the logs or a system view
> The problem is that autovacuum cannot vacuum them to set frozen xids;
> only the session that created them can do that.
< * Add connection pooling
<
< It is unclear if this should be done inside the backend code or done
< by something external like pgpool. The passing of file descriptors to
< existing backends is one of the difficulties with a backend approach.
<
< * Consider reducing memory used for shared buffer reference count
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00752.php
<
< * %Remove memory/file descriptor freeing before ereport(ERROR)
< * %Promote debug_query_string into a server-side function current_query()
< * Allow ecpg to work with MSVC and BCC
< * Add xpath_array() to /contrib/xml2 to return results as an array
< * Allow building in directories containing spaces
<
< This is probably not possible because 'gmake' and other compiler tools
< do not fully support quoting of paths with spaces.
<
< * Fix sgmltools so PDFs can be generated with bookmarks
< * Split out libpq pgpass and environment documentation sections to make
< it easier for non-developers to find
< * Use strlcpy() rather than our StrNCpy() macro
<
< http://archives.postgresql.org/pgsql-hackers/2006-09/msg02108.php
<
< o Re-enable timezone output on log_line_prefix '%t' when a
< shorter timezone string is available
< * Allow statements across databases or servers with transaction
< semantics
<
< This can be done using dblink and two-phase commit.
> * Add Oracle-style packages (Pavel)
< * Add the features of packages
> A package would be a schema with session-local variables,
> public/private functions, and initialization functions. It
> is also possible to implement these capabilities
> in any schema and not use a separate "packages"
> syntax at all.
< o Make private objects accessible only to objects in the same schema
< o Allow current_schema.objname to access current schema objects
< o Add session variables
< o Allow nested schemas
> http://archives.postgresql.org/pgsql-hackers/2006-08/msg00384.php
2007-12-30 11:22:53 +08:00
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creation of triggers or rules for INSERT/UPDATE/DELETE, and constraints
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for rapid partition selection. Options could include range and hash
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2006-09-03 07:47:39 +08:00
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partition selection.
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2007-07-17 08:07:54 +08:00
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2007-03-19 23:50:48 +08:00
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http://archives.postgresql.org/pgsql-hackers/2007-03/msg00375.php
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2007-04-10 05:18:29 +08:00
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http://archives.postgresql.org/pgsql-hackers/2007-04/msg00151.php
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2008-03-22 09:30:21 +08:00
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http://archives.postgresql.org/pgsql-hackers/2008-01/msg00028.php
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2008-03-22 09:46:30 +08:00
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http://archives.postgresql.org/pgsql-hackers/2008-01/msg00248.php
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2008-03-22 09:47:38 +08:00
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http://archives.postgresql.org/pgsql-hackers/2008-01/msg00387.php
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2008-03-22 09:30:21 +08:00
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http://archives.postgresql.org/pgsql-hackers/2008-01/msg00413.php
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2006-09-03 07:47:39 +08:00
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* Allow auto-selection of partitioned tables for min/max() operations
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2006-09-30 11:55:32 +08:00
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* Allow more complex user/database default GUC settings
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2006-04-11 07:15:46 +08:00
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2007-02-18 09:34:35 +08:00
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Currently ALTER USER and ALTER DATABASE support per-user and
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2006-09-30 11:55:32 +08:00
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per-database defaults. Consider adding per-user-and-database
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2007-08-28 11:00:36 +08:00
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defaults so things like search_path can be defaulted for a
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2006-09-30 11:55:32 +08:00
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specific user connecting to a specific database.
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Cleaups:
< * Allow GRANT/REVOKE permissions to be given to all schema objects with one
> * Allow GRANT/REVOKE permissions to be applied to all schema objects with one
60c60
< specifications. This is because new databases are created by copying
> specifications. This is because new databases are created by copying
63c63
< directory would create a new database with tables that had incorrect
> directory would create a new database with tables that had incorrect
72c72
<
>
85c85
< By not showing commented-out variables, we discourage people from
> By not showing commented-out variables, we discourage people from
91c91
< * Allow point-in-time recovery to archive partially filled write-ahead
> * Allow point-in-time recovery to archive partially filled write-ahead
102c102
< Currently all schemas are owned by the super-user because they are
> Currently all schemas are owned by the super-user because they are
128c128
< * Allow INET subnet tests with non-constants to be indexed
> * Allow INET subnet tests using non-constants to be indexed
143,144c143,144
< * Allow to_char to print localized month names
< * Allow functions to have a search path specified at creation time
> * Allow to_char() to print localized month names
> * Allow functions to have a schema search path specified at creation time
146c146
< * Add GUC variable to allow output of interval values in ISO8601 format
> * Add a GUC variable to allow output of interval values in ISO8601 format
154,155c154,155
< * Prevent inet cast to cidr if the unmasked bits are not zero, or
< zero bits
> * Prevent INET cast to CIDR if the unmasked bits are not zero, or
> zero the bits
158c158
< o Allow nulls in arrays
> o Allow NULLs in arrays
160,161c160,161
< o Delay resolution of array expression type so assignment coercion
< can be performed on empty array expressions
> o Delay resolution of array expression's data type so assignment
> coercion can be performed on empty array expressions
218,219c218,219
< key, foreign key [inheritance]
< * UNIQUE INDEX on base column not honored on inserts/updates from
> key, foreign key
> * UNIQUE INDEX on base column not honored on INSERTs/UPDATEs from
221c221
< (dup) should fail [inheritance]
> (dup) should fail
246c246
< * Fetch heap pages matching index entries in sequential order [performance]
> * Fetch heap pages matching index entries in sequential order
307c307
< functionality in DELETE. It's been agreed that the keyword should
> functionality in DELETE. It's been agreed that the keyword should
318c318
< * Allow PREPARE to automatically determine parameter types based on the SQL
> * Allow PREPARE to automatically determine parameter types based on the SQL
340,342d339
< * Allow CREATE TABLE foo (f1 INT CHECK (f1 > 0) CHECK (f1 < 10)) to work
< by searching for non-conflicting constraint names, and prefix with
< table name?
347c344
< new database.
> a new database.
350,351d346
< * Ignore temporary tables from other sessions when processing
< inheritance?
354,355c349,351
< * Add a session mode to warn about non-standard SQL usage in queries
< * Add MERGE command that does UPDATE/DELETE, or on failure, INSERT (rules, triggers?)
> * Add a GUC variable to warn about non-standard SQL usage in queries
> * Add MERGE command that does UPDATE/DELETE, or on failure, INSERT (rules,
> triggers?)
357,359c353,356
< * Add NOVICE output level for helpful messages like automatic sequence/index creation
< * Add COMMENT ON for all cluster global objects (users, groups,
< databases and tablespaces)
> * Add NOVICE output level for helpful messages like automatic sequence/index
> creation
> * Add COMMENT ON for all cluster global objects (users, groups, databases
> and tablespaces)
363c360
< When enabled, this would allow errors in multi-statement transactions
> When enabled, this would allow errors in multi-statement transactions
417c414
< o Allow COPY to optionally include column headings as the first line
> o Allow COPY to optionally include column headings in the first line
450c447
<
>
462c459
< o Handle references to temporary tables that are created, destroyed,
> o Handle references to temporary tables that are created, destroyed,
464c461
<
>
469d465
< o Improve PL/PgSQL exception handling using savepoints
488c484
<
>
503d498
<
518c513
< o Add pg_dumpall custom format dumps.
> o Add pg_dumpall custom format dumps.
520c515
< This is probably best done by combining pg_dump and pg_dumpall
> This is probably best done by combining pg_dump and pg_dumpall
532d526
< o Improve error handling (?)
555c549
< Adding shared locks requires recording the table/rows numbers in a
> Adding shared locks requires recording the table/rows numbers in a
643c637
< Posix_fadvise() can control both sequential/random file caching and
> Posix_fadvise() can control both sequential/random file caching and
703c697
< from distributted.net, http://www1.distributed.net/source,
> from distributted.net, http://www1.distributed.net/source,
729c723
< * Add connection pooling [pool]
> * Add connection pooling
755d748
<
759c752
<
>
768c761
< so an abrupt operating system restart might lose a few seconds of
> so an abrupt operating system restart might lose a few seconds of
785c778
< * Add utility to compute accurate random_page_cost value
> * Create utility to compute accurate random_page_cost value
787,789d779
< * Allow sorting, temp files, temp tables to use multiple work directories
<
< This allows the I/O load to be spread across multiple disk drives.
795a786
>
808,809c799,800
<
< * Use mmap() rather than SYSV shared memory or to write WAL files (?) [mmap]
>
> * Use mmap() rather than SYSV shared memory or to write WAL files (?)
812,813c803,804
< portability issues. Anonymous mmap (or mmap to /dev/zero) is required
< to prevent I/O overhead.
> portability issues. Anonymous mmap (or mmap to /dev/zero) is required
> to prevent I/O overhead.
817,819c808,810
< Doing I/O to large tables would consume a lot of address space or
< require frequent mapping/unmapping. Extending the file also causes
< mapping problems that might require mapping only individual pages,
> Doing I/O to large tables would consume a lot of address space or
> require frequent mapping/unmapping. Extending the file also causes
> mapping problems that might require mapping only individual pages,
821c812
< way to _prevent_ I/O to disk from the dirty shared buffers so changes
> way to _prevent_ I/O to disk from the dirty shared buffers so changes
826c817
< tuple overhead
> per-tuple overhead
829,831c820,822
< This would involve using multiple threads or processes to do optimization,
< sorting, or execution of single query. The major advantage of such a
< feature would be to allow multiple CPUs to work together to process a
> This would involve using multiple threads or processes to do optimization,
> sorting, or execution of single query. The major advantage of such a
> feature would be to allow multiple CPUs to work together to process a
834c825
< * Research the use of larger pages sizes
> * Research the use of larger page sizes
842a834
> * Move some /contrib modules out to their own project sites
845d836
< * Improve access-permissions check on data directory in Cygwin (Tom)
847,848c838
< * Clarify use of 'application' and 'command' tags in SGML docs
< * Better document ability to build only certain interfaces (Marc)
> * Improve documentation to build only interfaces (Marc)
852,853d841
< * Research interaction of setitimer() and sleep() used by statement_timeout
< * Rename /scripts directory because they are all C programs now
856,857d843
< * Allow binaries to be statically linked so they are more easily relocated
< * Move some /contrib modules out to their own project sites
862c848
< o Remove per-backend parameter file and move into shared memory?
> o Remove per-backend parameter file and move into shared memory
877,878c863,864
< o Update clients to use data types, typmod, schema.table.column names of
< result sets using new query protocol
> o Update clients to use data types, typmod, schema.table.column names
> of result sets using new query protocol
900d885
< * Kris is Kris Jurka
910c895
< * Simon is Simon Riggs
> * Simon is Simon Riggs <simon@2ndquadrant.com>
913d897
< * Teodor is
2004-11-11 11:59:14 +08:00
|
|
|
|
2008-06-24 06:12:20 +08:00
|
|
|
* Allow custom variables to appear in pg_settings()
|
2007-02-04 12:06:08 +08:00
|
|
|
* Allow custom variable classes that can restrict who can set the values
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-11/msg00911.php
|
|
|
|
|
|
2007-05-18 06:44:11 +08:00
|
|
|
* Implement the SQL standard mechanism whereby REVOKE ROLE revokes only
|
|
|
|
|
the privilege granted by the invoking role, and not those granted
|
|
|
|
|
by other roles
|
|
|
|
|
|
2007-05-18 06:53:23 +08:00
|
|
|
http://archives.postgresql.org/pgsql-bugs/2007-05/msg00010.php
|
|
|
|
|
|
2007-12-30 08:42:38 +08:00
|
|
|
* Allow SSL authentication/encryption over unix domain sockets
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-12/msg00924.php
|
|
|
|
|
|
2008-03-18 07:56:30 +08:00
|
|
|
* Allow SSL key file permission checks to be optionally disabled when
|
|
|
|
|
sharing SSL keys with other applications
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-bugs/2007-12/msg00069.php
|
|
|
|
|
|
2008-08-12 11:48:52 +08:00
|
|
|
* Allow SSL client certificate names to be checked against the client
|
2008-03-07 05:25:50 +08:00
|
|
|
hostname
|
|
|
|
|
|
|
|
|
|
This is already implemented in
|
|
|
|
|
libpq/fe-secure.c::verify_peer_name_matches_certificate() but the code
|
|
|
|
|
is commented out.
|
|
|
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|
|
2008-08-12 11:48:52 +08:00
|
|
|
* Add 'hostgss' pg_hba.conf option to allow GSS link-level encryption
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-07/msg01454.php
|
|
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|
|
|
2008-06-26 11:58:00 +08:00
|
|
|
* Improve server security options
|
2008-06-26 10:53:19 +08:00
|
|
|
|
2008-06-26 11:58:00 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-04/msg01875.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-05/msg00000.php
|
2008-06-26 10:53:19 +08:00
|
|
|
|
2008-08-16 10:15:33 +08:00
|
|
|
* Prevent query cancel packets from being replayed by an attacker,
|
|
|
|
|
especially when using SSL
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-08/msg00345.php
|
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|
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|
2005-07-05 01:00:32 +08:00
|
|
|
* Configuration files
|
2005-07-05 01:43:42 +08:00
|
|
|
|
2006-02-13 11:55:02 +08:00
|
|
|
o Allow pg_hba.conf to specify host names along with IP addresses
|
|
|
|
|
|
|
|
|
|
Host name lookup could occur when the postmaster reads the
|
|
|
|
|
pg_hba.conf file, or when the backend starts. Another
|
|
|
|
|
solution would be to reverse lookup the connection IP and
|
|
|
|
|
check that hostname against the host names in pg_hba.conf.
|
|
|
|
|
We could also then check that the host name maps to the IP
|
|
|
|
|
address.
|
2008-06-19 09:15:48 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-06/msg00569.php
|
2006-02-13 11:55:02 +08:00
|
|
|
|
2005-08-24 22:05:37 +08:00
|
|
|
o %Allow postgresql.conf file values to be changed via an SQL
|
2005-07-31 21:54:52 +08:00
|
|
|
API, perhaps using SET GLOBAL
|
2005-07-25 23:27:06 +08:00
|
|
|
o Allow the server to be stopped/restarted via an SQL API
|
Remove completed TODO items:
< * -Make postmater and postgres options distinct so the postmaster -o
< option is no longer needed
< * -Allow pooled connections to list all prepared statements
<
< This would allow an application inheriting a pooled connection to know
< the statements prepared in the current session.
<
< * -Re-enable the GUC full_page_writes in 8.2 when reliability issues have
< been addressed
< o -Add "include file" functionality in postgresql.conf
< o -Allow per-database permissions to be set via GRANT
<
< Allow database connection checks based on GRANT rules in
< addition to the existing access checks in pg_hba.conf.
<
< o -Issue a warning if a change-on-restart-only postgresql.conf value
> o Issue a warning if a change-on-restart-only postgresql.conf value
< o -Automatically force archiving of partially-filled WAL files when
< pg_stop_backup() is called or the server is stopped
< o -Add reporting of the current WAL file and offset, perhaps as
< part of partial log file archiving
< * -Allow server logs to be remotely read and removed using SQL commands
< * -Allow protocol-level BIND parameter values to be logged
< * -Zero umasked bits in conversion from INET cast to CIDR
< * -Prevent INET cast to CIDR from dropping netmask, SELECT '1.1.1.1'::inet::cidr
< * -Allow INET + INT8 to increment the host part of the address or
< throw an error on overflow
< * -Add 'tid != tid ' operator for use in corruption recovery
< o -Allow customization of the known set of TZ names (generalize the
< present australian_timezones hack)
< o -Allow timezone names in SQL strings, '2006-05-24 21:11
< Americas/New_York'::timestamptz
< o -Add support for day-time syntax, INTERVAL '1 2:03:04' DAY TO
< SECOND
< o -Allow NULLs in arrays
< * -Add transaction_timestamp(), statement_timestamp(), clock_timestamp()
< functionality
<
< Current CURRENT_TIMESTAMP returns the start time of the current
< transaction, and gettimeofday() returns the wallclock time. This will
< make time reporting more consistent and will allow reporting of
< the statement start time.
<
< * -Allow to_char() to print localized month names
< * -Add sleep() function, remove from regress.c
< * -Allow user-defined functions retuning a domain value to enforce domain
< constraints
< * -Allow TRUNCATE ... CASCADE/RESTRICT
<
< This is like DELETE CASCADE, but truncates.
<
< * -Add COMMENT ON for all cluster global objects (roles, databases
< and tablespaces)
< * -Make row-wise comparisons work per SQL spec
<
< Right now, '(a, b) < (1, 2)' is processed as 'a < 1 and b < 2', but
< the SQL standard requires it to be processed as a column-by-column
< comparison, so the proper comparison is '(a < 1) OR (a = 1 AND b < 2)'.
<
< * -Enable escape_string_warning and standard_conforming_strings
> * Enable standard_conforming_strings
< o -Add ON COMMIT capability to CREATE TABLE AS ... SELECT
< o -Allow an alias to be provided for the target table in
< UPDATE/DELETE (Neil)
< o -Allow UPDATE tab SET ROW (col, ...) = (val, ...) for updating
< multiple columns
< o -Add ALTER TABLE tab INHERIT / NO INHERIT parent
< o -Have COPY return the number of rows loaded/unloaded?
< o -Allow COPY (SELECT ...) TO 'filename'
<
< o -Allow pooled connections to list all open WITH HOLD cursors
<
< Because WITH HOLD cursors exist outside transactions, this allows
< them to be listed so they can be closed.
<
< o -Allow INSERT INTO tab (col1, ..) VALUES (val1, ..), (val2, ..)
< o -Allow INSERT/UPDATE ... RETURNING new.col or old.col
< o -Allow PL/python to return composite types and result sets
<
< * -Have initdb set the input DateStyle (MDY or DMY) based on locale
< o -Improve psql's handling of multi-line statements
<
< Currently, while \e saves a single statement as one entry, interactive
< statements are saved one line at a time. Ideally all statements
< would be saved like \e does.
<
< o -Allow multi-line column values to align in the proper columns
<
< If the second output column value is 'a\nb', the 'b' should appear
< in the second display column, rather than the first column as it
< does now.
<
< o -Display IN, INOUT, and OUT parameters in \df
< o -Allow pg_dump to use multiple -t and -n switches, exclusion
< ability, and regular expression object matching
< o -Update pg_dump and psql to use the new COPY libpq API (Christopher)
< o -Add a function to support Parse/DescribeStatement capability
< * -Add fillfactor to control reserved free space during index creation
< * -Add system view to show free space map contents
< * -Allow installing to directories containing spaces
<
< This is possible if proper quoting is added to the makefiles for the
< install targets. Because PostgreSQL supports relocatable installs, it
< is already possible to install into a directory that doesn't contain
< spaces and then copy the install to a directory with spaces.
<
< * -%Clean up compiler warnings (especially with gcc version 4)
< * -Remove BeOS and QNX-specific code
< o -Port contrib/xml2
2006-09-20 03:20:00 +08:00
|
|
|
o Issue a warning if a change-on-restart-only postgresql.conf value
|
2005-08-27 04:38:57 +08:00
|
|
|
is modified and the server config files are reloaded
|
2008-03-12 04:16:40 +08:00
|
|
|
o Consider normalizing fractions in postgresql.conf, perhaps
|
|
|
|
|
using '%'
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-06/msg00550.php
|
2005-07-31 11:08:35 +08:00
|
|
|
|
2008-03-18 02:22:44 +08:00
|
|
|
o Allow Kerberos to disable stripping of realms so we can
|
|
|
|
|
check the username@realm against multiple realms
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-11/msg00009.php
|
|
|
|
|
|
2008-06-14 00:24:38 +08:00
|
|
|
o Add functions to syntax check configuration files
|
|
|
|
|
|
2008-06-26 11:58:00 +08:00
|
|
|
o Improve LDAP authentication configuration options
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-04/msg01745.php
|
|
|
|
|
|
2008-07-16 23:30:19 +08:00
|
|
|
o Add external tool to auto-tune some postgresql.conf parameters
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-06/msg00000.php
|
|
|
|
|
|
|
|
|
|
|
2004-08-01 13:15:58 +08:00
|
|
|
|
2005-07-05 01:00:32 +08:00
|
|
|
* Tablespaces
|
2005-07-05 01:43:42 +08:00
|
|
|
|
2006-06-10 02:41:57 +08:00
|
|
|
o Allow a database in tablespace t1 with tables created in
|
2005-07-05 01:00:32 +08:00
|
|
|
tablespace t2 to be used as a template for a new database created
|
|
|
|
|
with default tablespace t2
|
2004-07-11 08:18:28 +08:00
|
|
|
|
Update TODO list based on 8.3 completed items:
< * Allow major upgrades without dump/reload, perhaps using pg_upgrade
< [pg_upgrade]
< * Check for unreferenced table files created by transactions that were
< in-progress when the server terminated abruptly
<
< http://archives.postgresql.org/pgsql-patches/2006-06/msg00096.php
<
> * Check for unreferenced table files created by transactions that were
> in-progress when the server terminated abruptly
>
> http://archives.postgresql.org/pgsql-patches/2006-06/msg00096.php
>
< * Support table partitioning that allows a single table to be stored
< in subtables that are partitioned based on the primary key or a WHERE
< clause
< creation of rules for INSERT/UPDATE/DELETE, and constraints for
< rapid partition selection. Options could include range and hash
> creation of triggers or rules for INSERT/UPDATE/DELETE, and constraints
> for rapid partition selection. Options could include range and hash
<
< * Improve replication solutions
<
< o Load balancing
<
< You can use any of the master/slave replication servers to use a
< standby server for data warehousing. To allow read/write queries to
< multiple servers, you need multi-master replication like pgcluster.
<
< o Allow replication over unreliable or non-persistent links
<
<
< o Mark change-on-restart-only values in postgresql.conf
< All objects in the default database tablespace must have default
< tablespace specifications. This is because new databases are
< created by copying directories. If you mix default tablespace
< tables and tablespace-specified tables in the same directory,
< creating a new database from such a mixed directory would create a
< new database with tables that had incorrect explicit tablespaces.
< To fix this would require modifying pg_class in the newly copied
< database, which we don't currently do.
> Currently all objects in the default database tablespace must
> have default tablespace specifications. This is because new
> databases are created by copying directories. If you mix default
> tablespace tables and tablespace-specified tables in the same
> directory, creating a new database from such a mixed directory
> would create a new database with tables that had incorrect
> explicit tablespaces. To fix this would require modifying
> pg_class in the newly copied database, which we don't currently
> do.
<
< o Allow recovery.conf to allow the same syntax as
> o Allow recovery.conf to support the same syntax as
< * Allow user-defined types to specify a type modifier at table creation
< time
< * Allow all data types to cast to and from TEXT
<
< http://archives.postgresql.org/pgsql-hackers/2007-04/msg00017.php
<
<
< o Add support for year-month syntax, INTERVAL '50-6' YEAR TO MONTH
< o Interpret INTERVAL '1 year' MONTH as CAST (INTERVAL '1 year' AS
< INTERVAL MONTH), and this should return '12 months'
> o Add support for year-month syntax, INTERVAL '50-6' YEAR
> TO MONTH
> o Interpret INTERVAL '1 year' MONTH as CAST (INTERVAL '1
> year' AS INTERVAL MONTH), and this should return '12 months'
< * Allow MONEY to be cast to/from other numeric data types
> * Allow MONEY to be easily cast to/from other numeric data types
>
< * Allow functions to have a schema search path specified at creation time
< * Fix cases where invalid byte encodings are accepted by the database,
< but throw an error on SELECT
<
< http://archives.postgresql.org/pgsql-hackers/2007-03/msg00767.php
< * Improve logging of prepared statements recovered during startup
> * Improve logging of prepared transactions recovered during startup
< * Make standard_conforming_strings the default in 8.4?
> * Make standard_conforming_strings the default in 8.5?
< * Allow the count returned by SELECT, etc to be to represent as an int64
> * Allow the count returned by SELECT, etc to be represented as an int64
< o Use more reliable method for CREATE DATABASE to get a consistent
< copy of db?
< o Fix transaction restriction checks for CREATE DATABASE and
< other commands
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00133.php
< currently allowed.
> currently allowed. This currently is done if the table is
> created inside the same transaction block as the COPY because
> no other backends can see the table.
< o Add SET PATH for schemas?
<
< This is basically the same as SET search_path.
< o Enforce referential integrity for system tables
< o Add Oracle-style packages (Pavel)
<
< A package would be a schema with session-local variables,
< public/private functions, and initialization functions. It
< is also possible to implement these capabilities
< in all schemas and not use a separate "packages"
< syntax at all.
<
< http://archives.postgresql.org/pgsql-hackers/2006-08/msg00384.php
<
< o Add single-step debugging of functions
< o Allow RETURN to return row or record functions
<
< http://archives.postgresql.org/pgsql-patches/2005-11/msg00045.php
< http://archives.postgresql.org/pgsql-patches/2006-08/msg00397.php
< http://archives.postgresql.org/pgsql-hackers/2006-09/msg00388.php
<
< o Fix problems with RETURN NEXT on tables with
< dropped/added columns after function creation
<
< http://archives.postgresql.org/pgsql-patches/2006-02/msg00165.php
<
< * Make consistent use of long/short command options --- pg_ctl needs
< long ones, pg_config doesn't have short ones, postgres doesn't have
< enough long ones, etc.
<
<
<
< o Consider parsing the -c string into individual queries so each
< is run in its own transaction
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00291.php
<
<
< o Remove unnecessary function pointer abstractions in pg_dump source
< code
> o Remove unnecessary function pointer abstractions in pg_dump source
> code
<
<
< o Fix SSL retry to avoid useless repeated connection attempts and
< ensuing misleading error messages
>
<
< This is difficult because it requires datatype-specific knowledge.
<
< * Improve commit_delay handling to reduce fsync()
< * %Add an option to sync() before fsync()'ing checkpoint files
>
< * Reduce lock time during VACUUM FULL by moving tuples with read lock,
< then write lock and truncate table
<
< Moved tuples are invisible to other backends so they don't require a
< write lock. However, the read lock promotion to write lock could lead
< to deadlock situations.
<
< * Prevent long-lived temporary tables from causing frozen-xid advancement
< starvation
<
< The problem is that autovacuum cannot vacuum them to set frozen xids;
< only the session that created them can do that.
<
<
<
< o Use free-space map information to guide refilling
< o Consider logging activity either to the logs or a system view
> The problem is that autovacuum cannot vacuum them to set frozen xids;
> only the session that created them can do that.
< * Add connection pooling
<
< It is unclear if this should be done inside the backend code or done
< by something external like pgpool. The passing of file descriptors to
< existing backends is one of the difficulties with a backend approach.
<
< * Consider reducing memory used for shared buffer reference count
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00752.php
<
< * %Remove memory/file descriptor freeing before ereport(ERROR)
< * %Promote debug_query_string into a server-side function current_query()
< * Allow ecpg to work with MSVC and BCC
< * Add xpath_array() to /contrib/xml2 to return results as an array
< * Allow building in directories containing spaces
<
< This is probably not possible because 'gmake' and other compiler tools
< do not fully support quoting of paths with spaces.
<
< * Fix sgmltools so PDFs can be generated with bookmarks
< * Split out libpq pgpass and environment documentation sections to make
< it easier for non-developers to find
< * Use strlcpy() rather than our StrNCpy() macro
<
< http://archives.postgresql.org/pgsql-hackers/2006-09/msg02108.php
<
< o Re-enable timezone output on log_line_prefix '%t' when a
< shorter timezone string is available
< * Allow statements across databases or servers with transaction
< semantics
<
< This can be done using dblink and two-phase commit.
> * Add Oracle-style packages (Pavel)
< * Add the features of packages
> A package would be a schema with session-local variables,
> public/private functions, and initialization functions. It
> is also possible to implement these capabilities
> in any schema and not use a separate "packages"
> syntax at all.
< o Make private objects accessible only to objects in the same schema
< o Allow current_schema.objname to access current schema objects
< o Add session variables
< o Allow nested schemas
> http://archives.postgresql.org/pgsql-hackers/2006-08/msg00384.php
2007-12-30 11:22:53 +08:00
|
|
|
Currently all objects in the default database tablespace must
|
|
|
|
|
have default tablespace specifications. This is because new
|
|
|
|
|
databases are created by copying directories. If you mix default
|
|
|
|
|
tablespace tables and tablespace-specified tables in the same
|
|
|
|
|
directory, creating a new database from such a mixed directory
|
|
|
|
|
would create a new database with tables that had incorrect
|
|
|
|
|
explicit tablespaces. To fix this would require modifying
|
|
|
|
|
pg_class in the newly copied database, which we don't currently
|
|
|
|
|
do.
|
2005-04-18 20:51:41 +08:00
|
|
|
|
2006-06-10 02:41:57 +08:00
|
|
|
o Allow reporting of which objects are in which tablespaces
|
2005-04-18 20:51:41 +08:00
|
|
|
|
2005-07-05 01:00:32 +08:00
|
|
|
This item is difficult because a tablespace can contain objects
|
|
|
|
|
from multiple databases. There is a server-side function that
|
|
|
|
|
returns the databases which use a specific tablespace, so this
|
|
|
|
|
requires a tool that will call that function and connect to each
|
|
|
|
|
database to find the objects in each database for that tablespace.
|
2004-08-16 12:38:46 +08:00
|
|
|
|
2005-07-05 01:00:32 +08:00
|
|
|
o Allow WAL replay of CREATE TABLESPACE to work when the directory
|
|
|
|
|
structure on the recovery computer is different from the original
|
2004-12-03 03:32:57 +08:00
|
|
|
|
2005-07-05 01:00:32 +08:00
|
|
|
o Allow per-tablespace quotas
|
2004-08-01 13:15:58 +08:00
|
|
|
|
|
|
|
|
|
2008-05-10 08:33:33 +08:00
|
|
|
* Statistics Collector
|
|
|
|
|
|
|
|
|
|
o Allow statistics collector information to be pulled from the collector
|
|
|
|
|
process directly, rather than requiring the collector to write a
|
|
|
|
|
filesystem file twice a second?
|
|
|
|
|
o Reduce file system activity overhead of statistics file pgstat.stat
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-general/2007-12/msg00106.php
|
|
|
|
|
|
|
|
|
|
o Allow statistics last vacuum/analyze execution times to be displayed
|
|
|
|
|
without requiring stats_row_level to be enabled
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-docs/2007-04/msg00028.php
|
|
|
|
|
|
|
|
|
|
o Clear table counters on TRUNCATE
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-04/msg00169.php
|
|
|
|
|
|
|
|
|
|
|
2005-07-05 01:43:42 +08:00
|
|
|
* Point-In-Time Recovery (PITR)
|
|
|
|
|
|
2008-03-18 05:45:14 +08:00
|
|
|
o Allow a warm standby system to also allow read-only statements
|
2005-07-05 01:00:32 +08:00
|
|
|
|
2008-03-18 05:45:14 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-03/msg00050.php
|
2005-07-05 01:00:32 +08:00
|
|
|
|
2008-03-18 05:45:14 +08:00
|
|
|
o %Create dump tool for write-ahead logs for use in determining
|
|
|
|
|
transaction id for point-in-time recovery
|
2008-03-04 02:45:24 +08:00
|
|
|
|
2008-03-18 05:45:14 +08:00
|
|
|
This is useful for checking PITR recovery.
|
2008-03-04 02:45:24 +08:00
|
|
|
|
2008-03-18 05:45:14 +08:00
|
|
|
o Allow recovery.conf to support the same syntax as
|
|
|
|
|
postgresql.conf, including quoting
|
2007-02-04 06:32:49 +08:00
|
|
|
|
2008-03-18 05:45:14 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-12/msg00497.php
|
2006-07-26 00:23:42 +08:00
|
|
|
|
2008-07-15 01:16:13 +08:00
|
|
|
o -Fix server restart problem when the server was shutdown during
|
2008-03-18 05:49:11 +08:00
|
|
|
a PITR backup
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-11/msg00800.php
|
|
|
|
|
|
2008-03-18 10:37:05 +08:00
|
|
|
o Recreate pg_xlog/archive_status/ if it doesn't exist after
|
|
|
|
|
restoring from a PITR backup
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-12/msg00487.php
|
2008-03-18 05:49:11 +08:00
|
|
|
|
2008-07-15 23:03:41 +08:00
|
|
|
o Reduce PITR WAL file size by removing full page writes and
|
|
|
|
|
by removing trailing bytes to improve compression
|
|
|
|
|
|
2005-07-05 01:00:32 +08:00
|
|
|
|
2002-04-26 04:20:50 +08:00
|
|
|
Data Types
|
|
|
|
|
==========
|
1999-07-07 04:41:22 +08:00
|
|
|
|
2005-12-03 01:39:44 +08:00
|
|
|
* Change NUMERIC to enforce the maximum precision
|
2007-03-30 05:43:34 +08:00
|
|
|
* Reduce storage space for small NUMERICs
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-02/msg01331.php
|
2007-03-30 05:44:39 +08:00
|
|
|
http://archives.postgresql.org/pgsql-patches/2007-02/msg00505.php
|
2008-03-12 04:28:13 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-06/msg00715.php
|
2007-03-30 05:43:34 +08:00
|
|
|
|
2004-07-21 03:52:03 +08:00
|
|
|
* Fix data types where equality comparison isn't intuitive, e.g. box
|
2006-06-17 02:32:07 +08:00
|
|
|
* Add support for public SYNONYMs
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-03/msg00519.php
|
|
|
|
|
|
2006-06-17 06:05:01 +08:00
|
|
|
* Fix CREATE CAST on DOMAINs
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-05/msg00072.php
|
2006-09-21 07:01:55 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-09/msg01681.php
|
2006-06-17 06:05:01 +08:00
|
|
|
|
2008-03-12 09:40:09 +08:00
|
|
|
* Allow domains to be cast
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2003-06/msg01206.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-08/msg00289.php
|
|
|
|
|
|
2006-07-29 23:56:32 +08:00
|
|
|
* Add support for SQL-standard GENERATED/IDENTITY columns
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-07/msg00543.php
|
2007-02-09 05:51:50 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-08/msg00038.php
|
2007-05-15 10:36:43 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-05/msg00344.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-patches/2007-05/msg00076.php
|
2008-03-06 00:07:21 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-02/msg00604.php
|
2006-07-29 23:56:32 +08:00
|
|
|
|
2006-09-15 02:10:38 +08:00
|
|
|
* Improve XML support
|
|
|
|
|
|
|
|
|
|
http://developer.postgresql.org/index.php/XML_Support
|
|
|
|
|
|
2007-02-09 09:29:48 +08:00
|
|
|
* Consider placing all sequences in a single table, or create a system
|
|
|
|
|
view
|
2008-03-03 23:06:55 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-03/msg00008.php
|
|
|
|
|
|
2008-03-04 03:03:44 +08:00
|
|
|
* Allow the UUID type to accept non-standard formats
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-02/msg01214.php
|
|
|
|
|
|
2008-03-13 03:41:23 +08:00
|
|
|
* Consider a special data type for regular expressions
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-08/msg01067.php
|
|
|
|
|
|
2008-03-18 07:49:33 +08:00
|
|
|
* Reduce BIT data type overhead using short varlena headers
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-general/2007-12/msg00273.php
|
|
|
|
|
|
2008-03-25 07:46:21 +08:00
|
|
|
* Allow xml arrays to be cast to other data types
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-09/msg00981.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-10/msg00231.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-11/msg00471.php
|
|
|
|
|
|
2008-03-25 21:09:39 +08:00
|
|
|
* Simplify integer cross-data-type operators
|
2008-03-25 10:41:21 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-bugs/2008-01/msg00189.php
|
|
|
|
|
|
2008-04-25 04:57:34 +08:00
|
|
|
* Allow adding/renaming/removing enumerated values to an existing
|
|
|
|
|
enumerated data type
|
2008-04-26 05:38:46 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-04/msg01718.php
|
|
|
|
|
|
2005-07-05 01:43:42 +08:00
|
|
|
* Dates and Times
|
|
|
|
|
|
2006-02-26 00:34:52 +08:00
|
|
|
o Allow infinite dates and intervals just like infinite timestamps
|
2007-08-28 11:00:36 +08:00
|
|
|
o Merge hardwired timezone names with the TZ database; allow either
|
2005-07-05 01:43:42 +08:00
|
|
|
kind everywhere a TZ name is currently taken
|
|
|
|
|
o Allow TIMESTAMP WITH TIME ZONE to store the original timezone
|
2008-04-19 20:16:21 +08:00
|
|
|
information, either zone name or offset from UTC
|
2005-07-05 01:43:42 +08:00
|
|
|
|
2007-08-28 11:00:36 +08:00
|
|
|
If the TIMESTAMP value is stored with a time zone name, interval
|
2005-07-10 13:06:42 +08:00
|
|
|
computations should adjust based on the time zone rules.
|
2008-04-19 20:16:21 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2004-10/msg00705.php
|
2005-07-05 01:43:42 +08:00
|
|
|
|
2005-08-27 04:38:57 +08:00
|
|
|
o Fix SELECT '0.01 years'::interval, '0.01 months'::interval
|
2007-08-28 11:00:36 +08:00
|
|
|
o Add a GUC variable to allow output of interval values in ISO8601
|
2005-10-27 10:33:31 +08:00
|
|
|
format
|
2007-04-03 06:46:10 +08:00
|
|
|
o Have timestamp subtraction not call justify_hours()?
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-sql/2006-10/msg00059.php
|
|
|
|
|
|
2005-10-27 10:33:31 +08:00
|
|
|
o Improve timestamptz subtraction to be DST-aware
|
|
|
|
|
|
2007-02-18 09:34:35 +08:00
|
|
|
Currently subtracting one date from another that crosses a
|
2005-10-27 10:33:31 +08:00
|
|
|
daylight savings time adjustment can return '1 day 1 hour', but
|
|
|
|
|
adding that back to the first date returns a time one hour in
|
|
|
|
|
the future. This is caused by the adjustment of '25 hours' to
|
|
|
|
|
'1 day 1 hour', and '1 day' is the same time the next day, even
|
|
|
|
|
if daylight savings adjustments are involved.
|
|
|
|
|
|
|
|
|
|
o Fix interval display to support values exceeding 2^31 hours
|
2007-04-03 06:46:10 +08:00
|
|
|
o Add overflow checking to timestamp and interval arithmetic
|
2007-01-11 12:27:29 +08:00
|
|
|
o Extend timezone code to allow 64-bit values so we can
|
|
|
|
|
represent years beyond 2038
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-09/msg01363.php
|
|
|
|
|
|
2008-05-20 08:35:45 +08:00
|
|
|
o -Use LC_TIME for localized weekday/month names, rather than
|
2007-02-15 05:00:17 +08:00
|
|
|
LC_MESSAGES
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-11/msg00390.php
|
|
|
|
|
|
2008-08-19 11:08:56 +08:00
|
|
|
* Add ISO INTERVAL handling
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-01/msg00250.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-bugs/2006-04/msg00248.php
|
|
|
|
|
|
|
|
|
|
o Support ISO INTERVAL syntax if units cannot be determined from
|
|
|
|
|
the string, and are supplied after the string
|
|
|
|
|
|
|
|
|
|
The SQL standard states that the units after the string
|
|
|
|
|
specify the units of the string, e.g. INTERVAL '2' MINUTE
|
|
|
|
|
should return '00:02:00'. The current behavior has the units
|
|
|
|
|
restrict the interval value to the specified unit or unit
|
|
|
|
|
range, INTERVAL '70' SECOND returns '00:00:10'.
|
|
|
|
|
|
|
|
|
|
For syntax that isn't uniquely ISO or PG syntax, like '1' or
|
|
|
|
|
'1:30', treat as ISO if there is a range specification clause,
|
|
|
|
|
and as PG if there no clause is present, e.g. interpret '1:30'
|
|
|
|
|
MINUTE TO SECOND as '1 minute 30 seconds', and interpret
|
|
|
|
|
'1:30' as '1 hour, 30 minutes'.
|
|
|
|
|
|
|
|
|
|
This makes common cases like SELECT INTERVAL '1' MONTH
|
|
|
|
|
SQL-standard results. The SQL standard supports a limited
|
|
|
|
|
number of unit combinations and doesn't support unit names in
|
|
|
|
|
the string. The PostgreSQL syntax is more flexible in the
|
|
|
|
|
range of units supported, e.g. PostgreSQL supports '1 year 1
|
|
|
|
|
hour', while the SQL standard does not.
|
|
|
|
|
|
|
|
|
|
o Add support for year-month syntax, INTERVAL '50-6' YEAR
|
|
|
|
|
TO MONTH
|
|
|
|
|
o Interpret INTERVAL '1 year' MONTH as CAST (INTERVAL '1
|
|
|
|
|
year' AS INTERVAL MONTH), and this should return '12 months'
|
|
|
|
|
o Round or truncate values to the requested precision, e.g.
|
|
|
|
|
INTERVAL '11 months' AS YEAR should return one or zero
|
|
|
|
|
o Support precision, CREATE TABLE foo (a INTERVAL MONTH(3))
|
2005-07-05 01:43:42 +08:00
|
|
|
|
|
|
|
|
|
|
|
|
|
* Arrays
|
2005-05-17 08:24:22 +08:00
|
|
|
|
Cleaups:
< * Allow GRANT/REVOKE permissions to be given to all schema objects with one
> * Allow GRANT/REVOKE permissions to be applied to all schema objects with one
60c60
< specifications. This is because new databases are created by copying
> specifications. This is because new databases are created by copying
63c63
< directory would create a new database with tables that had incorrect
> directory would create a new database with tables that had incorrect
72c72
<
>
85c85
< By not showing commented-out variables, we discourage people from
> By not showing commented-out variables, we discourage people from
91c91
< * Allow point-in-time recovery to archive partially filled write-ahead
> * Allow point-in-time recovery to archive partially filled write-ahead
102c102
< Currently all schemas are owned by the super-user because they are
> Currently all schemas are owned by the super-user because they are
128c128
< * Allow INET subnet tests with non-constants to be indexed
> * Allow INET subnet tests using non-constants to be indexed
143,144c143,144
< * Allow to_char to print localized month names
< * Allow functions to have a search path specified at creation time
> * Allow to_char() to print localized month names
> * Allow functions to have a schema search path specified at creation time
146c146
< * Add GUC variable to allow output of interval values in ISO8601 format
> * Add a GUC variable to allow output of interval values in ISO8601 format
154,155c154,155
< * Prevent inet cast to cidr if the unmasked bits are not zero, or
< zero bits
> * Prevent INET cast to CIDR if the unmasked bits are not zero, or
> zero the bits
158c158
< o Allow nulls in arrays
> o Allow NULLs in arrays
160,161c160,161
< o Delay resolution of array expression type so assignment coercion
< can be performed on empty array expressions
> o Delay resolution of array expression's data type so assignment
> coercion can be performed on empty array expressions
218,219c218,219
< key, foreign key [inheritance]
< * UNIQUE INDEX on base column not honored on inserts/updates from
> key, foreign key
> * UNIQUE INDEX on base column not honored on INSERTs/UPDATEs from
221c221
< (dup) should fail [inheritance]
> (dup) should fail
246c246
< * Fetch heap pages matching index entries in sequential order [performance]
> * Fetch heap pages matching index entries in sequential order
307c307
< functionality in DELETE. It's been agreed that the keyword should
> functionality in DELETE. It's been agreed that the keyword should
318c318
< * Allow PREPARE to automatically determine parameter types based on the SQL
> * Allow PREPARE to automatically determine parameter types based on the SQL
340,342d339
< * Allow CREATE TABLE foo (f1 INT CHECK (f1 > 0) CHECK (f1 < 10)) to work
< by searching for non-conflicting constraint names, and prefix with
< table name?
347c344
< new database.
> a new database.
350,351d346
< * Ignore temporary tables from other sessions when processing
< inheritance?
354,355c349,351
< * Add a session mode to warn about non-standard SQL usage in queries
< * Add MERGE command that does UPDATE/DELETE, or on failure, INSERT (rules, triggers?)
> * Add a GUC variable to warn about non-standard SQL usage in queries
> * Add MERGE command that does UPDATE/DELETE, or on failure, INSERT (rules,
> triggers?)
357,359c353,356
< * Add NOVICE output level for helpful messages like automatic sequence/index creation
< * Add COMMENT ON for all cluster global objects (users, groups,
< databases and tablespaces)
> * Add NOVICE output level for helpful messages like automatic sequence/index
> creation
> * Add COMMENT ON for all cluster global objects (users, groups, databases
> and tablespaces)
363c360
< When enabled, this would allow errors in multi-statement transactions
> When enabled, this would allow errors in multi-statement transactions
417c414
< o Allow COPY to optionally include column headings as the first line
> o Allow COPY to optionally include column headings in the first line
450c447
<
>
462c459
< o Handle references to temporary tables that are created, destroyed,
> o Handle references to temporary tables that are created, destroyed,
464c461
<
>
469d465
< o Improve PL/PgSQL exception handling using savepoints
488c484
<
>
503d498
<
518c513
< o Add pg_dumpall custom format dumps.
> o Add pg_dumpall custom format dumps.
520c515
< This is probably best done by combining pg_dump and pg_dumpall
> This is probably best done by combining pg_dump and pg_dumpall
532d526
< o Improve error handling (?)
555c549
< Adding shared locks requires recording the table/rows numbers in a
> Adding shared locks requires recording the table/rows numbers in a
643c637
< Posix_fadvise() can control both sequential/random file caching and
> Posix_fadvise() can control both sequential/random file caching and
703c697
< from distributted.net, http://www1.distributed.net/source,
> from distributted.net, http://www1.distributed.net/source,
729c723
< * Add connection pooling [pool]
> * Add connection pooling
755d748
<
759c752
<
>
768c761
< so an abrupt operating system restart might lose a few seconds of
> so an abrupt operating system restart might lose a few seconds of
785c778
< * Add utility to compute accurate random_page_cost value
> * Create utility to compute accurate random_page_cost value
787,789d779
< * Allow sorting, temp files, temp tables to use multiple work directories
<
< This allows the I/O load to be spread across multiple disk drives.
795a786
>
808,809c799,800
<
< * Use mmap() rather than SYSV shared memory or to write WAL files (?) [mmap]
>
> * Use mmap() rather than SYSV shared memory or to write WAL files (?)
812,813c803,804
< portability issues. Anonymous mmap (or mmap to /dev/zero) is required
< to prevent I/O overhead.
> portability issues. Anonymous mmap (or mmap to /dev/zero) is required
> to prevent I/O overhead.
817,819c808,810
< Doing I/O to large tables would consume a lot of address space or
< require frequent mapping/unmapping. Extending the file also causes
< mapping problems that might require mapping only individual pages,
> Doing I/O to large tables would consume a lot of address space or
> require frequent mapping/unmapping. Extending the file also causes
> mapping problems that might require mapping only individual pages,
821c812
< way to _prevent_ I/O to disk from the dirty shared buffers so changes
> way to _prevent_ I/O to disk from the dirty shared buffers so changes
826c817
< tuple overhead
> per-tuple overhead
829,831c820,822
< This would involve using multiple threads or processes to do optimization,
< sorting, or execution of single query. The major advantage of such a
< feature would be to allow multiple CPUs to work together to process a
> This would involve using multiple threads or processes to do optimization,
> sorting, or execution of single query. The major advantage of such a
> feature would be to allow multiple CPUs to work together to process a
834c825
< * Research the use of larger pages sizes
> * Research the use of larger page sizes
842a834
> * Move some /contrib modules out to their own project sites
845d836
< * Improve access-permissions check on data directory in Cygwin (Tom)
847,848c838
< * Clarify use of 'application' and 'command' tags in SGML docs
< * Better document ability to build only certain interfaces (Marc)
> * Improve documentation to build only interfaces (Marc)
852,853d841
< * Research interaction of setitimer() and sleep() used by statement_timeout
< * Rename /scripts directory because they are all C programs now
856,857d843
< * Allow binaries to be statically linked so they are more easily relocated
< * Move some /contrib modules out to their own project sites
862c848
< o Remove per-backend parameter file and move into shared memory?
> o Remove per-backend parameter file and move into shared memory
877,878c863,864
< o Update clients to use data types, typmod, schema.table.column names of
< result sets using new query protocol
> o Update clients to use data types, typmod, schema.table.column names
> of result sets using new query protocol
900d885
< * Kris is Kris Jurka
910c895
< * Simon is Simon Riggs
> * Simon is Simon Riggs <simon@2ndquadrant.com>
913d897
< * Teodor is
2004-11-11 11:59:14 +08:00
|
|
|
o Delay resolution of array expression's data type so assignment
|
|
|
|
|
coercion can be performed on empty array expressions
|
2006-08-17 14:48:38 +08:00
|
|
|
o Add support for arrays of domains
|
2007-05-13 19:22:04 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-patches/2007-05/msg00114.php
|
|
|
|
|
|
2007-04-12 05:02:31 +08:00
|
|
|
o Allow single-byte header storage for array elements
|
2004-02-13 07:27:52 +08:00
|
|
|
|
2002-01-23 05:55:06 +08:00
|
|
|
|
2005-07-05 01:43:42 +08:00
|
|
|
* Binary Data
|
|
|
|
|
|
2008-01-24 14:23:33 +08:00
|
|
|
o Improve vacuum of large objects, like contrib/vacuumlo?
|
2001-09-07 04:37:14 +08:00
|
|
|
o Add security checking for large objects
|
Great TODO updates from Tom:
< Currently SIGTERM of a backend can lead to lock table corruption.
> Lock table corruption following SIGTERM of an individual backend
> has been reported in 8.0. A possible cause was fixed in 8.1, but
> it is unknown whether other problems exist. This item mostly
> requires additional testing rather than of writing any new code.
< o Allow postgresql.conf values to be set so they can not be changed
< by the user
166c167,171
< * %Remove Money type, add money formatting for decimal type
> * Improve the MONEY data type
>
> Change the MONEY data type to use DECIMAL internally, with special
> locale-aware output formatting.
>
225c230
< o %Allow MIN()/MAX() on arrays
> o -Allow MIN()/MAX() on arrays
228c233
< o Modify array literal representation to handle array index lower bound
> o -Modify array literal representation to handle array index lower bound
235a241
> o Auto-delete large objects when referencing row is deleted
< Currently large objects entries do not have owners. Permissions can
< only be set at the pg_largeobject table level.
> /contrib/lo offers this functionality.
240d244
< o Auto-delete large objects when referencing row is deleted
< * %Have views on temporary tables exist in the temporary namespace
< * Allow temporary views on non-temporary tables
< * %Allow RULE recompilation
> * -Have views on temporary tables exist in the temporary namespace
> * -Allow temporary views on non-temporary tables
> * Allow VIEW/RULE recompilation when the underlying tables change
340a345,347
>
> This is like DELETE CASCADE, but truncates.
>
381c388
< * Make row-wise comparisons work per SQL spec
> * %Make row-wise comparisons work per SQL spec
< o Currently the system uses the operating system COPY command to
< create a new database. Add ON COMMIT capability to CREATE TABLE AS
< SELECT
> o Add ON COMMIT capability to CREATE TABLE AS ... SELECT
427c432
< o %Add ALTER DOMAIN TYPE
> o Add ALTER DOMAIN to modify the underlying data type
< o %Disallow dropping of an inherited constraint
< o -Allow objects to be moved to different schemas
> o Add missing object types for ALTER ... SET SCHEMA
< o %Prevent child tables from altering constraints like CHECK that were
< inherited from the parent table
> o %Disallow dropping of an inherited constraint
> o %Prevent child tables from altering or dropping constraints
> like CHECK that were inherited from the parent table
< o Handle references to temporary tables that are created, destroyed,
< then recreated during a session, and EXECUTE is not used
<
< This requires the cached PL/PgSQL byte code to be invalidated when
< an object referenced in the function is changed.
<
< o Add table function support to pltcl, plperl, plpython?
< o Allow PL/pgSQL to name columns by ordinal position, e.g. rec.(3)
> o Add table function support to pltcl, plpython
549a548
> o Allow function argument names to be queries from PL/PgSQL
< o Pass arrays natively instead of as text between plperl and postgres
< o Add support for polymorphic arguments and return types to plperl
> o -Pass arrays natively instead of as text between plperl and postgres
> o Add support for polymorphic arguments and return types to
> languages other than PL/PgSQL
> o Add support for OUT and INOUT parameters to languages other
> than PL/PgSQL
< * Allow libpq to access SQLSTATE so pg_ctl can test for connection failure
<
< This would be used for checking if the server is up.
<
565c563
< * Have initdb set DateStyle based on locale?
> * Have initdb set the input DateStyle (MDY or DMY) based on locale?
567d564
< * Add a schema option to createlang
< o Add pg_dumpall custom format dumps.
<
< This is probably best done by combining pg_dump and pg_dumpall
< into a single binary.
<
> o Add pg_dumpall custom format dumps?
612c605,606
< o Remove unnecessary abstractions in pg_dump source code
> o Remove unnecessary function pointer abstractions in pg_dump source
> code
< * %Remove CREATE CONSTRAINT TRIGGER
<
< This was used in older releases to dump referential integrity
< constraints.
<
682a672,675
> This is particularly important for references to temporary tables
> in PL/PgSQL because PL/PgSQL caches query plans. The only workaround
> in PL/PgSQL is to use EXECUTE.
>
748c741
< * Fetch heap pages matching index entries in sequential order
> * -Fetch heap pages matching index entries in sequential order
797c790
< Currently no only one hash bucket can be stored on a page. Ideally
> Currently only one hash bucket can be stored on a page. Ideally
806a800,802
> o Add WAL logging for crash recovery
> o Allow multi-column hash indexes
>
812a809,812
>
> Ideally this requires a separate test program that can be run
> at initdb time or optionally later.
>
867c867
< * Improve the background writer
> * -Improve the background writer
< For large table adjustements during vacuum, it is faster to reindex
< rather than update the index.
> For large table adjustements during VACUUM FULL, it is faster to
> reindex rather than update the index.
< * Reduce lock time by moving tuples with read lock, then write
< lock and truncate table
> * Reduce lock time during VACUUM FULL by moving tuples with read lock,
> then write lock and truncate table
919c919,920
< o %Suggest VACUUM FULL if a table is nearly empty
> o %Issue log message to suggest VACUUM FULL if a table is nearly
> empty?
995d995
< * Add WAL index reliability improvement to non-btree indexes
1045c1045
< * ANALYZE should record a pg_statistic entry for an all-NULL column
> * -ANALYZE should record a pg_statistic entry for an all-NULL column
1047a1048,1051
> * Allow constraint_elimination to be automatically performed
>
> This requires additional code to reduce the performance loss caused by
> constraint elimination.
1090c1094
< * Remove memory/file descriptor freeing before ereport(ERROR)
> * %Remove memory/file descriptor freeing before ereport(ERROR)
< * Promote debug_query_string into a server-side function current_query()
< * Allow the identifier length to be increased via a configure option
> * %Promote debug_query_string into a server-side function current_query()
> * %Allow the identifier length to be increased via a configure option
1113d1116
< * Fix cross-compiling of time zone database via 'zic'
1130c1133
< o Improve dlerror() reporting string
> o -Improve dlerror() reporting string
1132c1135
< o Add support for Unicode
> o %Add support for Unicode
2005-08-27 02:52:44 +08:00
|
|
|
o Auto-delete large objects when referencing row is deleted
|
2004-08-01 13:15:58 +08:00
|
|
|
|
2008-08-19 11:08:56 +08:00
|
|
|
contrib/lo offers this functionality.
|
2004-08-01 13:15:58 +08:00
|
|
|
|
|
|
|
|
o Allow read/write into TOAST values like large objects
|
|
|
|
|
|
Improve indentation of sublists:
< The proper solution to this will probably the use of a master/slave
< replication solution like Sloney and a connection pooling tool like
< pgpool.
> The proper solution to this will probably the use of a master/slave
> replication solution like Sloney and a connection pooling tool like
> pgpool.
114,116c114,116
< You can use any of the master/slave replication servers to use a
< standby server for data warehousing. To allow read/write queries to
< multiple servers, you need multi-master replication like pgcluster.
> You can use any of the master/slave replication servers to use a
> standby server for data warehousing. To allow read/write queries to
> multiple servers, you need multi-master replication like pgcluster.
166,167c166,167
< Currently large objects entries do not have owners. Permissions can
< only be set at the pg_largeobject table level.
> Currently large objects entries do not have owners. Permissions can
> only be set at the pg_largeobject table level.
173c173
< This requires the TOAST column to be stored EXTERNAL.
> This requires the TOAST column to be stored EXTERNAL.
359,360c359,360
< One complexity is whether moving a schema should move all existing
< schema objects or just define the location for future object creation.
> One complexity is whether moving a schema should move all existing
> schema objects or just define the location for future object creation.
364,365c364,365
< Currently non-global system tables must be in the default database
< schema. Global system tables can never be moved.
> Currently non-global system tables must be in the default database
> schema. Global system tables can never be moved.
371,375c371,375
< This might require some background daemon to maintain clustering
< during periods of low usage. It might also require tables to be only
< paritally filled for easier reorganization. Another idea would
< be to create a merged heap/index data file so an index lookup would
< automatically access the heap data too.
> This might require some background daemon to maintain clustering
> during periods of low usage. It might also require tables to be only
> paritally filled for easier reorganization. Another idea would
> be to create a merged heap/index data file so an index lookup would
> automatically access the heap data too.
379,380c379,380
< To do this, determine the ideal cluster index for each system
< table and set the cluster setting during initdb.
> To do this, determine the ideal cluster index for each system
> table and set the cluster setting during initdb.
385,386c385,386
< This requires the use of a savepoint before each COPY line is
< processed, with ROLLBACK on COPY failure.
> This requires the use of a savepoint before each COPY line is
> processed, with ROLLBACK on COPY failure.
395,398c395,398
< This requires using the row ctid to map cursor rows back to the
< original heap row. This become more complicated if WITH HOLD cursors
< are to be supported because WITH HOLD cursors have a copy of the row
< and no FOR UPDATE lock.
> This requires using the row ctid to map cursor rows back to the
> original heap row. This become more complicated if WITH HOLD cursors
> are to be supported because WITH HOLD cursors have a copy of the row
> and no FOR UPDATE lock.
405,406c405,406
< Because WITH HOLD cursors exist outside transactions, this allows
< them to be listed so they can be closed.
> Because WITH HOLD cursors exist outside transactions, this allows
> them to be listed so they can be closed.
413,415c413,415
< This is useful for returning the auto-generated key for an INSERT.
< One complication is how to handle rules that run as part of
< the insert.
> This is useful for returning the auto-generated key for an INSERT.
> One complication is how to handle rules that run as part of
> the insert.
422c422
< This is basically the same as SET search_path.
> This is basically the same as SET search_path.
426,427c426,427
< This requires a checking function to be called after the server
< configuration file is read.
> This requires a checking function to be called after the server
> configuration file is read.
432c432
< Currently only constants are supported.
> Currently only constants are supported.
438,439c438,439
< This requires the cached PL/PgSQL byte code to be invalidated when
< an object referenced in the function is changed.
> This requires the cached PL/PgSQL byte code to be invalidated when
> an object referenced in the function is changed.
512,513c512,513
< Document differences between ecpg and the SQL standard and
< information about the Informix-compatibility module.
> Document differences between ecpg and the SQL standard and
> information about the Informix-compatibility module.
2004-10-19 00:13:43 +08:00
|
|
|
This requires the TOAST column to be stored EXTERNAL.
|
2004-08-01 13:15:58 +08:00
|
|
|
|
2006-06-15 03:32:48 +08:00
|
|
|
o Add API for 64-bit large object access
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2005-09/msg00781.php
|
|
|
|
|
|
2007-11-27 07:31:09 +08:00
|
|
|
* MONEY data type
|
|
|
|
|
|
2008-08-19 11:08:56 +08:00
|
|
|
o Add locale-aware MONEY type, and support multiple currencies
|
2007-11-27 07:31:09 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-general/2005-08/msg01432.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-03/msg01181.php
|
|
|
|
|
|
2008-08-19 11:08:56 +08:00
|
|
|
o MONEY dumps in a locale-specific format making it difficult to
|
2007-11-27 07:31:09 +08:00
|
|
|
restore to a system with a different locale
|
2008-08-19 11:08:56 +08:00
|
|
|
o Allow MONEY to be easily cast to/from other numeric data types
|
Update TODO list based on 8.3 completed items:
< * Allow major upgrades without dump/reload, perhaps using pg_upgrade
< [pg_upgrade]
< * Check for unreferenced table files created by transactions that were
< in-progress when the server terminated abruptly
<
< http://archives.postgresql.org/pgsql-patches/2006-06/msg00096.php
<
> * Check for unreferenced table files created by transactions that were
> in-progress when the server terminated abruptly
>
> http://archives.postgresql.org/pgsql-patches/2006-06/msg00096.php
>
< * Support table partitioning that allows a single table to be stored
< in subtables that are partitioned based on the primary key or a WHERE
< clause
< creation of rules for INSERT/UPDATE/DELETE, and constraints for
< rapid partition selection. Options could include range and hash
> creation of triggers or rules for INSERT/UPDATE/DELETE, and constraints
> for rapid partition selection. Options could include range and hash
<
< * Improve replication solutions
<
< o Load balancing
<
< You can use any of the master/slave replication servers to use a
< standby server for data warehousing. To allow read/write queries to
< multiple servers, you need multi-master replication like pgcluster.
<
< o Allow replication over unreliable or non-persistent links
<
<
< o Mark change-on-restart-only values in postgresql.conf
< All objects in the default database tablespace must have default
< tablespace specifications. This is because new databases are
< created by copying directories. If you mix default tablespace
< tables and tablespace-specified tables in the same directory,
< creating a new database from such a mixed directory would create a
< new database with tables that had incorrect explicit tablespaces.
< To fix this would require modifying pg_class in the newly copied
< database, which we don't currently do.
> Currently all objects in the default database tablespace must
> have default tablespace specifications. This is because new
> databases are created by copying directories. If you mix default
> tablespace tables and tablespace-specified tables in the same
> directory, creating a new database from such a mixed directory
> would create a new database with tables that had incorrect
> explicit tablespaces. To fix this would require modifying
> pg_class in the newly copied database, which we don't currently
> do.
<
< o Allow recovery.conf to allow the same syntax as
> o Allow recovery.conf to support the same syntax as
< * Allow user-defined types to specify a type modifier at table creation
< time
< * Allow all data types to cast to and from TEXT
<
< http://archives.postgresql.org/pgsql-hackers/2007-04/msg00017.php
<
<
< o Add support for year-month syntax, INTERVAL '50-6' YEAR TO MONTH
< o Interpret INTERVAL '1 year' MONTH as CAST (INTERVAL '1 year' AS
< INTERVAL MONTH), and this should return '12 months'
> o Add support for year-month syntax, INTERVAL '50-6' YEAR
> TO MONTH
> o Interpret INTERVAL '1 year' MONTH as CAST (INTERVAL '1
> year' AS INTERVAL MONTH), and this should return '12 months'
< * Allow MONEY to be cast to/from other numeric data types
> * Allow MONEY to be easily cast to/from other numeric data types
>
< * Allow functions to have a schema search path specified at creation time
< * Fix cases where invalid byte encodings are accepted by the database,
< but throw an error on SELECT
<
< http://archives.postgresql.org/pgsql-hackers/2007-03/msg00767.php
< * Improve logging of prepared statements recovered during startup
> * Improve logging of prepared transactions recovered during startup
< * Make standard_conforming_strings the default in 8.4?
> * Make standard_conforming_strings the default in 8.5?
< * Allow the count returned by SELECT, etc to be to represent as an int64
> * Allow the count returned by SELECT, etc to be represented as an int64
< o Use more reliable method for CREATE DATABASE to get a consistent
< copy of db?
< o Fix transaction restriction checks for CREATE DATABASE and
< other commands
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00133.php
< currently allowed.
> currently allowed. This currently is done if the table is
> created inside the same transaction block as the COPY because
> no other backends can see the table.
< o Add SET PATH for schemas?
<
< This is basically the same as SET search_path.
< o Enforce referential integrity for system tables
< o Add Oracle-style packages (Pavel)
<
< A package would be a schema with session-local variables,
< public/private functions, and initialization functions. It
< is also possible to implement these capabilities
< in all schemas and not use a separate "packages"
< syntax at all.
<
< http://archives.postgresql.org/pgsql-hackers/2006-08/msg00384.php
<
< o Add single-step debugging of functions
< o Allow RETURN to return row or record functions
<
< http://archives.postgresql.org/pgsql-patches/2005-11/msg00045.php
< http://archives.postgresql.org/pgsql-patches/2006-08/msg00397.php
< http://archives.postgresql.org/pgsql-hackers/2006-09/msg00388.php
<
< o Fix problems with RETURN NEXT on tables with
< dropped/added columns after function creation
<
< http://archives.postgresql.org/pgsql-patches/2006-02/msg00165.php
<
< * Make consistent use of long/short command options --- pg_ctl needs
< long ones, pg_config doesn't have short ones, postgres doesn't have
< enough long ones, etc.
<
<
<
< o Consider parsing the -c string into individual queries so each
< is run in its own transaction
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00291.php
<
<
< o Remove unnecessary function pointer abstractions in pg_dump source
< code
> o Remove unnecessary function pointer abstractions in pg_dump source
> code
<
<
< o Fix SSL retry to avoid useless repeated connection attempts and
< ensuing misleading error messages
>
<
< This is difficult because it requires datatype-specific knowledge.
<
< * Improve commit_delay handling to reduce fsync()
< * %Add an option to sync() before fsync()'ing checkpoint files
>
< * Reduce lock time during VACUUM FULL by moving tuples with read lock,
< then write lock and truncate table
<
< Moved tuples are invisible to other backends so they don't require a
< write lock. However, the read lock promotion to write lock could lead
< to deadlock situations.
<
< * Prevent long-lived temporary tables from causing frozen-xid advancement
< starvation
<
< The problem is that autovacuum cannot vacuum them to set frozen xids;
< only the session that created them can do that.
<
<
<
< o Use free-space map information to guide refilling
< o Consider logging activity either to the logs or a system view
> The problem is that autovacuum cannot vacuum them to set frozen xids;
> only the session that created them can do that.
< * Add connection pooling
<
< It is unclear if this should be done inside the backend code or done
< by something external like pgpool. The passing of file descriptors to
< existing backends is one of the difficulties with a backend approach.
<
< * Consider reducing memory used for shared buffer reference count
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00752.php
<
< * %Remove memory/file descriptor freeing before ereport(ERROR)
< * %Promote debug_query_string into a server-side function current_query()
< * Allow ecpg to work with MSVC and BCC
< * Add xpath_array() to /contrib/xml2 to return results as an array
< * Allow building in directories containing spaces
<
< This is probably not possible because 'gmake' and other compiler tools
< do not fully support quoting of paths with spaces.
<
< * Fix sgmltools so PDFs can be generated with bookmarks
< * Split out libpq pgpass and environment documentation sections to make
< it easier for non-developers to find
< * Use strlcpy() rather than our StrNCpy() macro
<
< http://archives.postgresql.org/pgsql-hackers/2006-09/msg02108.php
<
< o Re-enable timezone output on log_line_prefix '%t' when a
< shorter timezone string is available
< * Allow statements across databases or servers with transaction
< semantics
<
< This can be done using dblink and two-phase commit.
> * Add Oracle-style packages (Pavel)
< * Add the features of packages
> A package would be a schema with session-local variables,
> public/private functions, and initialization functions. It
> is also possible to implement these capabilities
> in any schema and not use a separate "packages"
> syntax at all.
< o Make private objects accessible only to objects in the same schema
< o Allow current_schema.objname to access current schema objects
< o Add session variables
< o Allow nested schemas
> http://archives.postgresql.org/pgsql-hackers/2006-08/msg00384.php
2007-12-30 11:22:53 +08:00
|
|
|
|
2008-05-07 12:12:25 +08:00
|
|
|
* Text Search
|
|
|
|
|
|
2008-05-07 12:34:51 +08:00
|
|
|
o Allow dictionaries to change the token that is passed on to
|
|
|
|
|
later dictionaries
|
2008-05-07 12:12:25 +08:00
|
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|
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http://archives.postgresql.org/pgsql-patches/2007-11/msg00081.php
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o Consider a function-based API for '@@' searches
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http://archives.postgresql.org/pgsql-hackers/2007-11/msg00511.php
|
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o Improve text search error messages
|
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http://archives.postgresql.org/pgsql-hackers/2007-10/msg00966.php
|
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http://archives.postgresql.org/pgsql-hackers/2007-11/msg01146.php
|
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o Consider changing error to warning for strings larger than one
|
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|
megabyte
|
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http://archives.postgresql.org/pgsql-bugs/2008-02/msg00190.php
|
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http://archives.postgresql.org/pgsql-patches/2008-03/msg00062.php
|
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2007-11-27 07:31:09 +08:00
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2005-07-05 01:00:32 +08:00
|
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|
Functions
|
|
|
|
|
=========
|
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|
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|
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* Allow INET subnet tests using non-constants to be indexed
|
2006-03-03 10:18:09 +08:00
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|
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* Allow to_date() and to_timestamp() accept localized month names
|
2007-04-03 05:25:34 +08:00
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|
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* Fix to_date()-related functions to consistently issue errors
|
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http://archives.postgresql.org/pgsql-hackers/2007-02/msg00915.php
|
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|
2006-03-03 10:38:57 +08:00
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* Add missing parameter handling in to_char()
|
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2007-07-17 08:07:54 +08:00
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http://archives.postgresql.org/pgsql-hackers/2005-12/msg00948.php
|
2006-03-03 10:38:57 +08:00
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2005-07-05 01:00:32 +08:00
|
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* Allow substring/replace() to get/set bit values
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* Allow to_char() on interval values to accumulate the highest unit
|
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|
requested
|
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|
Some special format flag would be required to request such
|
2007-08-28 11:00:36 +08:00
|
|
|
accumulation. Such functionality could also be added to EXTRACT.
|
2005-07-05 01:00:32 +08:00
|
|
|
Prevent accumulation that crosses the month/day boundary because of
|
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|
|
the uneven number of days in a month.
|
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o to_char(INTERVAL '1 hour 5 minutes', 'MI') => 65
|
2007-08-28 11:00:36 +08:00
|
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o to_char(INTERVAL '43 hours 20 minutes', 'MI' ) => 2600
|
2005-07-05 01:00:32 +08:00
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|
|
o to_char(INTERVAL '43 hours 20 minutes', 'WK:DD:HR:MI') => 0:1:19:20
|
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o to_char(INTERVAL '3 years 5 months','MM') => 41
|
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|
2007-01-17 04:58:38 +08:00
|
|
|
* Implement inlining of set-returning functions defined in SQL
|
2006-11-23 13:01:47 +08:00
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|
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* Allow SQL-language functions to return results from RETURNING queries
|
2007-02-14 10:49:37 +08:00
|
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|
http://archives.postgresql.org/pgsql-hackers/2006-10/msg00665.php
|
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|
2007-02-18 09:32:55 +08:00
|
|
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* Allow SQL-language functions to reference parameters by parameter name
|
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|
|
2007-02-18 09:34:35 +08:00
|
|
|
Currently SQL-language functions can only refer to dollar parameters,
|
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|
e.g. $1
|
2007-02-18 09:32:55 +08:00
|
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|
2007-02-17 10:01:02 +08:00
|
|
|
* Add SPI_gettypmod() to return the typemod for a TupleDesc
|
2007-01-27 11:25:49 +08:00
|
|
|
* Enforce typmod for function inputs, function results and parameters for
|
|
|
|
|
spi_prepare'd statements called from PLs
|
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|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-01/msg01403.php
|
2005-08-25 01:56:20 +08:00
|
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|
|
2007-02-17 10:01:02 +08:00
|
|
|
* Allow holdable cursors in SPI
|
2007-02-01 12:50:58 +08:00
|
|
|
* Tighten function permission checks
|
|
|
|
|
|
2007-02-01 12:51:31 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-12/msg00568.php
|
|
|
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|
|
2007-02-20 22:17:24 +08:00
|
|
|
* Fix IS OF so it matches the ISO specification, and add documentation
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-patches/2003-08/msg00060.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-02/msg00060.php
|
2007-02-01 12:50:58 +08:00
|
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|
|
2007-02-21 05:22:35 +08:00
|
|
|
* Add missing operators for geometric data types
|
|
|
|
|
|
|
|
|
|
Some geometric types do not have the full suite of geometric operators,
|
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|
|
e.g. box @> point
|
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|
|
2007-09-26 16:47:43 +08:00
|
|
|
* Implement Boyer-Moore searching in strpos()
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-patches/2007-08/msg00012.php
|
2007-02-21 05:22:35 +08:00
|
|
|
|
2008-03-07 01:19:38 +08:00
|
|
|
* Prevent malicious functions from being executed with the permissions
|
|
|
|
|
of unsuspecting users
|
|
|
|
|
|
2008-08-19 11:08:56 +08:00
|
|
|
Index functions are safe, so VACUUM and ANALYZE are safe too.
|
2008-03-07 01:19:38 +08:00
|
|
|
Triggers, CHECK and DEFAULT expressions, and rules are still vulnerable.
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-01/msg00268.php
|
2007-02-01 12:50:58 +08:00
|
|
|
|
2008-03-07 02:00:59 +08:00
|
|
|
* Reduce memory usage of aggregates in set returning functions
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-performance/2008-01/msg00031.php
|
|
|
|
|
|
2008-07-15 04:54:18 +08:00
|
|
|
* -Add temporal versions of generate_series()
|
2008-03-12 01:42:13 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-04/msg01180.php
|
|
|
|
|
|
2008-03-12 23:14:50 +08:00
|
|
|
* Add array_accum() and array_to_set() functions for arrays
|
|
|
|
|
|
2008-03-13 03:32:07 +08:00
|
|
|
The standards specify array_agg() and UNNEST.
|
2008-03-12 23:14:50 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-08/msg00464.php
|
|
|
|
|
|
2008-03-18 06:34:23 +08:00
|
|
|
* Fix /contrib/ltree operator
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-bugs/2007-11/msg00044.php
|
|
|
|
|
|
2008-03-22 03:58:11 +08:00
|
|
|
* Fix inconsistent precedence of =, >, and < compared to <>, >=, and <=
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-bugs/2007-12/msg00145.php
|
|
|
|
|
|
2008-03-25 08:00:30 +08:00
|
|
|
* Fix regular expression bug when using complex back-references
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-bugs/2007-10/msg00000.php
|
|
|
|
|
|
2008-03-25 08:07:12 +08:00
|
|
|
* Have /contrib/dblink reuse unnamed connections
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-10/msg00895.php
|
|
|
|
|
|
2008-03-25 10:58:09 +08:00
|
|
|
* Add SQL-standard array_agg() and unnest() array functions
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-01/msg01017.php
|
|
|
|
|
|
2008-04-12 03:50:40 +08:00
|
|
|
* Allow calling of a procedure outside a SELECT that can control the
|
|
|
|
|
transaction state
|
2008-04-12 03:16:47 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-10/msg01375.php
|
2008-03-25 10:58:09 +08:00
|
|
|
|
2008-08-18 23:02:46 +08:00
|
|
|
* Fix all set-returning system functions so they support a wildcard
|
|
|
|
|
target list
|
|
|
|
|
|
|
|
|
|
SELECT * FROM pg_get_keywords() works but SELECT * FROM
|
|
|
|
|
pg_show_all_settings() does not.
|
|
|
|
|
|
2008-03-07 02:00:59 +08:00
|
|
|
|
2005-07-05 01:00:32 +08:00
|
|
|
|
2002-04-26 04:20:50 +08:00
|
|
|
Multi-Language Support
|
|
|
|
|
======================
|
2001-05-11 01:29:55 +08:00
|
|
|
|
2001-05-17 11:22:53 +08:00
|
|
|
* Add NCHAR (as distinguished from ordinary varchar),
|
2004-04-08 03:14:21 +08:00
|
|
|
* Allow locale to be set at database creation
|
2004-08-01 13:15:58 +08:00
|
|
|
|
2005-05-07 23:45:23 +08:00
|
|
|
Currently locale can only be set during initdb. No global tables have
|
|
|
|
|
locale-aware columns. However, the database template used during
|
|
|
|
|
database creation might have locale-aware indexes. The indexes would
|
|
|
|
|
need to be reindexed to match the new locale.
|
2004-08-01 13:15:58 +08:00
|
|
|
|
2008-04-19 20:16:21 +08:00
|
|
|
* Allow encoding on a per-column basis optionally using the ICU library;
|
|
|
|
|
Add CREATE COLLATE
|
2004-08-01 13:15:58 +08:00
|
|
|
|
2008-04-19 20:16:21 +08:00
|
|
|
Right now only one encoding is allowed per database.
|
2007-07-17 08:07:54 +08:00
|
|
|
|
2006-06-09 00:07:23 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2005-03/msg00932.php
|
2008-04-19 20:16:21 +08:00
|
|
|
http://archives.postgresql.org/pgsql-patches/2005-08/msg00039.php
|
2006-08-11 23:53:39 +08:00
|
|
|
http://archives.postgresql.org/pgsql-patches/2005-08/msg00309.php
|
2008-04-19 20:16:21 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2005-09/msg00110.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-patches/2005-09/msg00020.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2005-12/msg01121.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-01/msg00767.php
|
2006-08-11 23:53:39 +08:00
|
|
|
http://archives.postgresql.org/pgsql-patches/2006-03/msg00233.php
|
2006-09-15 01:14:53 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-09/msg00662.php
|
2008-08-19 11:08:56 +08:00
|
|
|
http://wiki.postgresql.org/wiki/Todo:Collate
|
2008-04-04 02:14:02 +08:00
|
|
|
http://wiki.postgresql.org/wiki/Todo:ICU
|
2004-08-01 13:15:58 +08:00
|
|
|
|
2000-06-14 10:57:08 +08:00
|
|
|
* Support multiple simultaneous character sets, per SQL92
|
2005-07-05 01:00:32 +08:00
|
|
|
* Improve UTF8 combined character handling?
|
2004-08-01 13:15:58 +08:00
|
|
|
* Add octet_length_server() and octet_length_client()
|
|
|
|
|
* Make octet_length_client() the same as octet_length()?
|
2005-08-21 09:04:45 +08:00
|
|
|
* Fix problems with wrong runtime encoding conversion for NLS message files
|
2006-06-15 05:10:50 +08:00
|
|
|
* Add URL to more complete multi-byte regression tests
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2005-07/msg00272.php
|
2003-08-17 12:50:57 +08:00
|
|
|
|
2006-06-15 05:40:00 +08:00
|
|
|
* Fix ILIKE and regular expressions to handle case insensitivity
|
|
|
|
|
properly in multibyte encodings
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-bugs/2005-10/msg00001.php
|
2006-06-15 07:03:12 +08:00
|
|
|
http://archives.postgresql.org/pgsql-patches/2005-11/msg00173.php
|
2006-06-15 05:40:00 +08:00
|
|
|
|
2006-09-18 23:52:23 +08:00
|
|
|
* Set client encoding based on the client operating system encoding
|
|
|
|
|
|
|
|
|
|
Currently client_encoding is set in postgresql.conf, which
|
|
|
|
|
defaults to the server encoding.
|
2006-09-29 01:43:36 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-08/msg01696.php
|
2006-09-18 23:52:23 +08:00
|
|
|
|
2008-03-12 03:44:39 +08:00
|
|
|
* Change memory allocation for multi-byte functions so memory is
|
|
|
|
|
allocated inside conversion functions
|
|
|
|
|
|
|
|
|
|
Currently we preallocate memory based on worst-case usage.
|
|
|
|
|
|
2007-03-23 04:55:19 +08:00
|
|
|
|
2002-02-04 03:24:30 +08:00
|
|
|
|
2002-04-26 04:20:50 +08:00
|
|
|
Views / Rules
|
|
|
|
|
=============
|
1999-06-07 10:42:07 +08:00
|
|
|
|
2006-02-26 09:21:57 +08:00
|
|
|
* Automatically create rules on views so they are updateable, per SQL99
|
2004-11-08 22:54:00 +08:00
|
|
|
|
|
|
|
|
We can only auto-create rules for simple views. For more complex
|
2006-02-26 09:21:57 +08:00
|
|
|
cases users will still have to write rules manually.
|
2007-07-17 08:07:54 +08:00
|
|
|
|
2006-06-17 02:50:24 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-03/msg00586.php
|
2007-03-28 10:17:45 +08:00
|
|
|
http://archives.postgresql.org/pgsql-patches/2006-08/msg00255.php
|
2004-11-08 22:54:00 +08:00
|
|
|
|
2002-06-29 03:28:30 +08:00
|
|
|
* Add the functionality for WITH CHECK OPTION clause of CREATE VIEW
|
Great TODO updates from Tom:
< Currently SIGTERM of a backend can lead to lock table corruption.
> Lock table corruption following SIGTERM of an individual backend
> has been reported in 8.0. A possible cause was fixed in 8.1, but
> it is unknown whether other problems exist. This item mostly
> requires additional testing rather than of writing any new code.
< o Allow postgresql.conf values to be set so they can not be changed
< by the user
166c167,171
< * %Remove Money type, add money formatting for decimal type
> * Improve the MONEY data type
>
> Change the MONEY data type to use DECIMAL internally, with special
> locale-aware output formatting.
>
225c230
< o %Allow MIN()/MAX() on arrays
> o -Allow MIN()/MAX() on arrays
228c233
< o Modify array literal representation to handle array index lower bound
> o -Modify array literal representation to handle array index lower bound
235a241
> o Auto-delete large objects when referencing row is deleted
< Currently large objects entries do not have owners. Permissions can
< only be set at the pg_largeobject table level.
> /contrib/lo offers this functionality.
240d244
< o Auto-delete large objects when referencing row is deleted
< * %Have views on temporary tables exist in the temporary namespace
< * Allow temporary views on non-temporary tables
< * %Allow RULE recompilation
> * -Have views on temporary tables exist in the temporary namespace
> * -Allow temporary views on non-temporary tables
> * Allow VIEW/RULE recompilation when the underlying tables change
340a345,347
>
> This is like DELETE CASCADE, but truncates.
>
381c388
< * Make row-wise comparisons work per SQL spec
> * %Make row-wise comparisons work per SQL spec
< o Currently the system uses the operating system COPY command to
< create a new database. Add ON COMMIT capability to CREATE TABLE AS
< SELECT
> o Add ON COMMIT capability to CREATE TABLE AS ... SELECT
427c432
< o %Add ALTER DOMAIN TYPE
> o Add ALTER DOMAIN to modify the underlying data type
< o %Disallow dropping of an inherited constraint
< o -Allow objects to be moved to different schemas
> o Add missing object types for ALTER ... SET SCHEMA
< o %Prevent child tables from altering constraints like CHECK that were
< inherited from the parent table
> o %Disallow dropping of an inherited constraint
> o %Prevent child tables from altering or dropping constraints
> like CHECK that were inherited from the parent table
< o Handle references to temporary tables that are created, destroyed,
< then recreated during a session, and EXECUTE is not used
<
< This requires the cached PL/PgSQL byte code to be invalidated when
< an object referenced in the function is changed.
<
< o Add table function support to pltcl, plperl, plpython?
< o Allow PL/pgSQL to name columns by ordinal position, e.g. rec.(3)
> o Add table function support to pltcl, plpython
549a548
> o Allow function argument names to be queries from PL/PgSQL
< o Pass arrays natively instead of as text between plperl and postgres
< o Add support for polymorphic arguments and return types to plperl
> o -Pass arrays natively instead of as text between plperl and postgres
> o Add support for polymorphic arguments and return types to
> languages other than PL/PgSQL
> o Add support for OUT and INOUT parameters to languages other
> than PL/PgSQL
< * Allow libpq to access SQLSTATE so pg_ctl can test for connection failure
<
< This would be used for checking if the server is up.
<
565c563
< * Have initdb set DateStyle based on locale?
> * Have initdb set the input DateStyle (MDY or DMY) based on locale?
567d564
< * Add a schema option to createlang
< o Add pg_dumpall custom format dumps.
<
< This is probably best done by combining pg_dump and pg_dumpall
< into a single binary.
<
> o Add pg_dumpall custom format dumps?
612c605,606
< o Remove unnecessary abstractions in pg_dump source code
> o Remove unnecessary function pointer abstractions in pg_dump source
> code
< * %Remove CREATE CONSTRAINT TRIGGER
<
< This was used in older releases to dump referential integrity
< constraints.
<
682a672,675
> This is particularly important for references to temporary tables
> in PL/PgSQL because PL/PgSQL caches query plans. The only workaround
> in PL/PgSQL is to use EXECUTE.
>
748c741
< * Fetch heap pages matching index entries in sequential order
> * -Fetch heap pages matching index entries in sequential order
797c790
< Currently no only one hash bucket can be stored on a page. Ideally
> Currently only one hash bucket can be stored on a page. Ideally
806a800,802
> o Add WAL logging for crash recovery
> o Allow multi-column hash indexes
>
812a809,812
>
> Ideally this requires a separate test program that can be run
> at initdb time or optionally later.
>
867c867
< * Improve the background writer
> * -Improve the background writer
< For large table adjustements during vacuum, it is faster to reindex
< rather than update the index.
> For large table adjustements during VACUUM FULL, it is faster to
> reindex rather than update the index.
< * Reduce lock time by moving tuples with read lock, then write
< lock and truncate table
> * Reduce lock time during VACUUM FULL by moving tuples with read lock,
> then write lock and truncate table
919c919,920
< o %Suggest VACUUM FULL if a table is nearly empty
> o %Issue log message to suggest VACUUM FULL if a table is nearly
> empty?
995d995
< * Add WAL index reliability improvement to non-btree indexes
1045c1045
< * ANALYZE should record a pg_statistic entry for an all-NULL column
> * -ANALYZE should record a pg_statistic entry for an all-NULL column
1047a1048,1051
> * Allow constraint_elimination to be automatically performed
>
> This requires additional code to reduce the performance loss caused by
> constraint elimination.
1090c1094
< * Remove memory/file descriptor freeing before ereport(ERROR)
> * %Remove memory/file descriptor freeing before ereport(ERROR)
< * Promote debug_query_string into a server-side function current_query()
< * Allow the identifier length to be increased via a configure option
> * %Promote debug_query_string into a server-side function current_query()
> * %Allow the identifier length to be increased via a configure option
1113d1116
< * Fix cross-compiling of time zone database via 'zic'
1130c1133
< o Improve dlerror() reporting string
> o -Improve dlerror() reporting string
1132c1135
< o Add support for Unicode
> o %Add support for Unicode
2005-08-27 02:52:44 +08:00
|
|
|
* Allow VIEW/RULE recompilation when the underlying tables change
|
2002-02-04 03:24:30 +08:00
|
|
|
|
2005-08-27 21:38:43 +08:00
|
|
|
Another issue is whether underlying table changes should be reflected
|
|
|
|
|
in the view, e.g. should SELECT * show additional columns if they
|
|
|
|
|
are added after the view is created.
|
|
|
|
|
|
2007-09-15 02:50:48 +08:00
|
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|
* Make it possible to use RETURNING together with conditional DO INSTEAD
|
|
|
|
|
rules, such as for partitioning setups
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-09/msg00577.php
|
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|
|
|
|
2008-01-15 06:14:30 +08:00
|
|
|
* Add the ability to automatically create materialized views
|
|
|
|
|
|
|
|
|
|
Right now materialized views require the user to create triggers on the
|
|
|
|
|
main table to keep the summary table current. SQL syntax should be able
|
|
|
|
|
to manager the triggers and summary table automatically. A more
|
|
|
|
|
sophisticated implementation would automatically retrieve from the
|
|
|
|
|
summary table when the main table is referenced, if possible.
|
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|
|
2008-07-15 06:57:21 +08:00
|
|
|
* Improve ability to modify views via ALTER TABLE
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-05/msg00691.php
|
2008-08-14 09:57:42 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-07/msg01410.php
|
2008-08-16 10:36:58 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-08/msg00300.php
|
2008-01-15 06:14:30 +08:00
|
|
|
|
2002-04-18 04:35:23 +08:00
|
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|
2005-07-05 01:43:42 +08:00
|
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|
SQL Commands
|
|
|
|
|
============
|
1999-06-07 10:42:07 +08:00
|
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|
|
2002-08-27 07:02:21 +08:00
|
|
|
* Add CORRESPONDING BY to UNION/INTERSECT/EXCEPT
|
2002-12-10 02:09:44 +08:00
|
|
|
* Add ROLLUP, CUBE, GROUPING SETS options to GROUP BY
|
2005-08-24 22:05:37 +08:00
|
|
|
* %Allow SET CONSTRAINTS to be qualified by schema/table name
|
|
|
|
|
* %Add a separate TRUNCATE permission
|
2005-07-30 11:15:22 +08:00
|
|
|
|
|
|
|
|
Currently only the owner can TRUNCATE a table because triggers are not
|
|
|
|
|
called, and the table is locked in exclusive mode.
|
|
|
|
|
|
2008-07-02 02:09:09 +08:00
|
|
|
* Fix TRUNCATE ... RESTART IDENTITY so its affect on sequences is rolled
|
|
|
|
|
back on transaction abort
|
2003-08-17 13:23:13 +08:00
|
|
|
* Allow PREPARE of cursors
|
2004-08-13 03:45:24 +08:00
|
|
|
* Allow finer control over the caching of prepared query plans
|
|
|
|
|
|
2007-02-18 09:34:35 +08:00
|
|
|
Currently queries prepared via the libpq API are planned on first
|
2004-08-13 03:45:24 +08:00
|
|
|
execute using the supplied parameters --- allow SQL PREPARE to do the
|
|
|
|
|
same. Also, allow control over replanning prepared queries either
|
|
|
|
|
manually or automatically when statistics for execute parameters
|
|
|
|
|
differ dramatically from those used during planning.
|
|
|
|
|
|
Update TODO list based on 8.3 completed items:
< * Allow major upgrades without dump/reload, perhaps using pg_upgrade
< [pg_upgrade]
< * Check for unreferenced table files created by transactions that were
< in-progress when the server terminated abruptly
<
< http://archives.postgresql.org/pgsql-patches/2006-06/msg00096.php
<
> * Check for unreferenced table files created by transactions that were
> in-progress when the server terminated abruptly
>
> http://archives.postgresql.org/pgsql-patches/2006-06/msg00096.php
>
< * Support table partitioning that allows a single table to be stored
< in subtables that are partitioned based on the primary key or a WHERE
< clause
< creation of rules for INSERT/UPDATE/DELETE, and constraints for
< rapid partition selection. Options could include range and hash
> creation of triggers or rules for INSERT/UPDATE/DELETE, and constraints
> for rapid partition selection. Options could include range and hash
<
< * Improve replication solutions
<
< o Load balancing
<
< You can use any of the master/slave replication servers to use a
< standby server for data warehousing. To allow read/write queries to
< multiple servers, you need multi-master replication like pgcluster.
<
< o Allow replication over unreliable or non-persistent links
<
<
< o Mark change-on-restart-only values in postgresql.conf
< All objects in the default database tablespace must have default
< tablespace specifications. This is because new databases are
< created by copying directories. If you mix default tablespace
< tables and tablespace-specified tables in the same directory,
< creating a new database from such a mixed directory would create a
< new database with tables that had incorrect explicit tablespaces.
< To fix this would require modifying pg_class in the newly copied
< database, which we don't currently do.
> Currently all objects in the default database tablespace must
> have default tablespace specifications. This is because new
> databases are created by copying directories. If you mix default
> tablespace tables and tablespace-specified tables in the same
> directory, creating a new database from such a mixed directory
> would create a new database with tables that had incorrect
> explicit tablespaces. To fix this would require modifying
> pg_class in the newly copied database, which we don't currently
> do.
<
< o Allow recovery.conf to allow the same syntax as
> o Allow recovery.conf to support the same syntax as
< * Allow user-defined types to specify a type modifier at table creation
< time
< * Allow all data types to cast to and from TEXT
<
< http://archives.postgresql.org/pgsql-hackers/2007-04/msg00017.php
<
<
< o Add support for year-month syntax, INTERVAL '50-6' YEAR TO MONTH
< o Interpret INTERVAL '1 year' MONTH as CAST (INTERVAL '1 year' AS
< INTERVAL MONTH), and this should return '12 months'
> o Add support for year-month syntax, INTERVAL '50-6' YEAR
> TO MONTH
> o Interpret INTERVAL '1 year' MONTH as CAST (INTERVAL '1
> year' AS INTERVAL MONTH), and this should return '12 months'
< * Allow MONEY to be cast to/from other numeric data types
> * Allow MONEY to be easily cast to/from other numeric data types
>
< * Allow functions to have a schema search path specified at creation time
< * Fix cases where invalid byte encodings are accepted by the database,
< but throw an error on SELECT
<
< http://archives.postgresql.org/pgsql-hackers/2007-03/msg00767.php
< * Improve logging of prepared statements recovered during startup
> * Improve logging of prepared transactions recovered during startup
< * Make standard_conforming_strings the default in 8.4?
> * Make standard_conforming_strings the default in 8.5?
< * Allow the count returned by SELECT, etc to be to represent as an int64
> * Allow the count returned by SELECT, etc to be represented as an int64
< o Use more reliable method for CREATE DATABASE to get a consistent
< copy of db?
< o Fix transaction restriction checks for CREATE DATABASE and
< other commands
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00133.php
< currently allowed.
> currently allowed. This currently is done if the table is
> created inside the same transaction block as the COPY because
> no other backends can see the table.
< o Add SET PATH for schemas?
<
< This is basically the same as SET search_path.
< o Enforce referential integrity for system tables
< o Add Oracle-style packages (Pavel)
<
< A package would be a schema with session-local variables,
< public/private functions, and initialization functions. It
< is also possible to implement these capabilities
< in all schemas and not use a separate "packages"
< syntax at all.
<
< http://archives.postgresql.org/pgsql-hackers/2006-08/msg00384.php
<
< o Add single-step debugging of functions
< o Allow RETURN to return row or record functions
<
< http://archives.postgresql.org/pgsql-patches/2005-11/msg00045.php
< http://archives.postgresql.org/pgsql-patches/2006-08/msg00397.php
< http://archives.postgresql.org/pgsql-hackers/2006-09/msg00388.php
<
< o Fix problems with RETURN NEXT on tables with
< dropped/added columns after function creation
<
< http://archives.postgresql.org/pgsql-patches/2006-02/msg00165.php
<
< * Make consistent use of long/short command options --- pg_ctl needs
< long ones, pg_config doesn't have short ones, postgres doesn't have
< enough long ones, etc.
<
<
<
< o Consider parsing the -c string into individual queries so each
< is run in its own transaction
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00291.php
<
<
< o Remove unnecessary function pointer abstractions in pg_dump source
< code
> o Remove unnecessary function pointer abstractions in pg_dump source
> code
<
<
< o Fix SSL retry to avoid useless repeated connection attempts and
< ensuing misleading error messages
>
<
< This is difficult because it requires datatype-specific knowledge.
<
< * Improve commit_delay handling to reduce fsync()
< * %Add an option to sync() before fsync()'ing checkpoint files
>
< * Reduce lock time during VACUUM FULL by moving tuples with read lock,
< then write lock and truncate table
<
< Moved tuples are invisible to other backends so they don't require a
< write lock. However, the read lock promotion to write lock could lead
< to deadlock situations.
<
< * Prevent long-lived temporary tables from causing frozen-xid advancement
< starvation
<
< The problem is that autovacuum cannot vacuum them to set frozen xids;
< only the session that created them can do that.
<
<
<
< o Use free-space map information to guide refilling
< o Consider logging activity either to the logs or a system view
> The problem is that autovacuum cannot vacuum them to set frozen xids;
> only the session that created them can do that.
< * Add connection pooling
<
< It is unclear if this should be done inside the backend code or done
< by something external like pgpool. The passing of file descriptors to
< existing backends is one of the difficulties with a backend approach.
<
< * Consider reducing memory used for shared buffer reference count
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00752.php
<
< * %Remove memory/file descriptor freeing before ereport(ERROR)
< * %Promote debug_query_string into a server-side function current_query()
< * Allow ecpg to work with MSVC and BCC
< * Add xpath_array() to /contrib/xml2 to return results as an array
< * Allow building in directories containing spaces
<
< This is probably not possible because 'gmake' and other compiler tools
< do not fully support quoting of paths with spaces.
<
< * Fix sgmltools so PDFs can be generated with bookmarks
< * Split out libpq pgpass and environment documentation sections to make
< it easier for non-developers to find
< * Use strlcpy() rather than our StrNCpy() macro
<
< http://archives.postgresql.org/pgsql-hackers/2006-09/msg02108.php
<
< o Re-enable timezone output on log_line_prefix '%t' when a
< shorter timezone string is available
< * Allow statements across databases or servers with transaction
< semantics
<
< This can be done using dblink and two-phase commit.
> * Add Oracle-style packages (Pavel)
< * Add the features of packages
> A package would be a schema with session-local variables,
> public/private functions, and initialization functions. It
> is also possible to implement these capabilities
> in any schema and not use a separate "packages"
> syntax at all.
< o Make private objects accessible only to objects in the same schema
< o Allow current_schema.objname to access current schema objects
< o Add session variables
< o Allow nested schemas
> http://archives.postgresql.org/pgsql-hackers/2006-08/msg00384.php
2007-12-30 11:22:53 +08:00
|
|
|
* Improve logging of prepared transactions recovered during startup
|
2007-02-14 12:19:37 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-11/msg00092.php
|
|
|
|
|
|
2008-04-25 02:23:05 +08:00
|
|
|
* Improve failure message when DROP DATABASE is used on a database that
|
|
|
|
|
has prepared transactions
|
|
|
|
|
* Allow prepared transactions with temporary tables created and dropped
|
2008-08-19 11:08:56 +08:00
|
|
|
in the same transaction, and when an ON COMMIT DELETE ROWS temporary
|
2008-04-25 02:23:05 +08:00
|
|
|
table is accessed
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-03/msg00047.php
|
|
|
|
|
|
Cleaups:
< * Allow GRANT/REVOKE permissions to be given to all schema objects with one
> * Allow GRANT/REVOKE permissions to be applied to all schema objects with one
60c60
< specifications. This is because new databases are created by copying
> specifications. This is because new databases are created by copying
63c63
< directory would create a new database with tables that had incorrect
> directory would create a new database with tables that had incorrect
72c72
<
>
85c85
< By not showing commented-out variables, we discourage people from
> By not showing commented-out variables, we discourage people from
91c91
< * Allow point-in-time recovery to archive partially filled write-ahead
> * Allow point-in-time recovery to archive partially filled write-ahead
102c102
< Currently all schemas are owned by the super-user because they are
> Currently all schemas are owned by the super-user because they are
128c128
< * Allow INET subnet tests with non-constants to be indexed
> * Allow INET subnet tests using non-constants to be indexed
143,144c143,144
< * Allow to_char to print localized month names
< * Allow functions to have a search path specified at creation time
> * Allow to_char() to print localized month names
> * Allow functions to have a schema search path specified at creation time
146c146
< * Add GUC variable to allow output of interval values in ISO8601 format
> * Add a GUC variable to allow output of interval values in ISO8601 format
154,155c154,155
< * Prevent inet cast to cidr if the unmasked bits are not zero, or
< zero bits
> * Prevent INET cast to CIDR if the unmasked bits are not zero, or
> zero the bits
158c158
< o Allow nulls in arrays
> o Allow NULLs in arrays
160,161c160,161
< o Delay resolution of array expression type so assignment coercion
< can be performed on empty array expressions
> o Delay resolution of array expression's data type so assignment
> coercion can be performed on empty array expressions
218,219c218,219
< key, foreign key [inheritance]
< * UNIQUE INDEX on base column not honored on inserts/updates from
> key, foreign key
> * UNIQUE INDEX on base column not honored on INSERTs/UPDATEs from
221c221
< (dup) should fail [inheritance]
> (dup) should fail
246c246
< * Fetch heap pages matching index entries in sequential order [performance]
> * Fetch heap pages matching index entries in sequential order
307c307
< functionality in DELETE. It's been agreed that the keyword should
> functionality in DELETE. It's been agreed that the keyword should
318c318
< * Allow PREPARE to automatically determine parameter types based on the SQL
> * Allow PREPARE to automatically determine parameter types based on the SQL
340,342d339
< * Allow CREATE TABLE foo (f1 INT CHECK (f1 > 0) CHECK (f1 < 10)) to work
< by searching for non-conflicting constraint names, and prefix with
< table name?
347c344
< new database.
> a new database.
350,351d346
< * Ignore temporary tables from other sessions when processing
< inheritance?
354,355c349,351
< * Add a session mode to warn about non-standard SQL usage in queries
< * Add MERGE command that does UPDATE/DELETE, or on failure, INSERT (rules, triggers?)
> * Add a GUC variable to warn about non-standard SQL usage in queries
> * Add MERGE command that does UPDATE/DELETE, or on failure, INSERT (rules,
> triggers?)
357,359c353,356
< * Add NOVICE output level for helpful messages like automatic sequence/index creation
< * Add COMMENT ON for all cluster global objects (users, groups,
< databases and tablespaces)
> * Add NOVICE output level for helpful messages like automatic sequence/index
> creation
> * Add COMMENT ON for all cluster global objects (users, groups, databases
> and tablespaces)
363c360
< When enabled, this would allow errors in multi-statement transactions
> When enabled, this would allow errors in multi-statement transactions
417c414
< o Allow COPY to optionally include column headings as the first line
> o Allow COPY to optionally include column headings in the first line
450c447
<
>
462c459
< o Handle references to temporary tables that are created, destroyed,
> o Handle references to temporary tables that are created, destroyed,
464c461
<
>
469d465
< o Improve PL/PgSQL exception handling using savepoints
488c484
<
>
503d498
<
518c513
< o Add pg_dumpall custom format dumps.
> o Add pg_dumpall custom format dumps.
520c515
< This is probably best done by combining pg_dump and pg_dumpall
> This is probably best done by combining pg_dump and pg_dumpall
532d526
< o Improve error handling (?)
555c549
< Adding shared locks requires recording the table/rows numbers in a
> Adding shared locks requires recording the table/rows numbers in a
643c637
< Posix_fadvise() can control both sequential/random file caching and
> Posix_fadvise() can control both sequential/random file caching and
703c697
< from distributted.net, http://www1.distributed.net/source,
> from distributted.net, http://www1.distributed.net/source,
729c723
< * Add connection pooling [pool]
> * Add connection pooling
755d748
<
759c752
<
>
768c761
< so an abrupt operating system restart might lose a few seconds of
> so an abrupt operating system restart might lose a few seconds of
785c778
< * Add utility to compute accurate random_page_cost value
> * Create utility to compute accurate random_page_cost value
787,789d779
< * Allow sorting, temp files, temp tables to use multiple work directories
<
< This allows the I/O load to be spread across multiple disk drives.
795a786
>
808,809c799,800
<
< * Use mmap() rather than SYSV shared memory or to write WAL files (?) [mmap]
>
> * Use mmap() rather than SYSV shared memory or to write WAL files (?)
812,813c803,804
< portability issues. Anonymous mmap (or mmap to /dev/zero) is required
< to prevent I/O overhead.
> portability issues. Anonymous mmap (or mmap to /dev/zero) is required
> to prevent I/O overhead.
817,819c808,810
< Doing I/O to large tables would consume a lot of address space or
< require frequent mapping/unmapping. Extending the file also causes
< mapping problems that might require mapping only individual pages,
> Doing I/O to large tables would consume a lot of address space or
> require frequent mapping/unmapping. Extending the file also causes
> mapping problems that might require mapping only individual pages,
821c812
< way to _prevent_ I/O to disk from the dirty shared buffers so changes
> way to _prevent_ I/O to disk from the dirty shared buffers so changes
826c817
< tuple overhead
> per-tuple overhead
829,831c820,822
< This would involve using multiple threads or processes to do optimization,
< sorting, or execution of single query. The major advantage of such a
< feature would be to allow multiple CPUs to work together to process a
> This would involve using multiple threads or processes to do optimization,
> sorting, or execution of single query. The major advantage of such a
> feature would be to allow multiple CPUs to work together to process a
834c825
< * Research the use of larger pages sizes
> * Research the use of larger page sizes
842a834
> * Move some /contrib modules out to their own project sites
845d836
< * Improve access-permissions check on data directory in Cygwin (Tom)
847,848c838
< * Clarify use of 'application' and 'command' tags in SGML docs
< * Better document ability to build only certain interfaces (Marc)
> * Improve documentation to build only interfaces (Marc)
852,853d841
< * Research interaction of setitimer() and sleep() used by statement_timeout
< * Rename /scripts directory because they are all C programs now
856,857d843
< * Allow binaries to be statically linked so they are more easily relocated
< * Move some /contrib modules out to their own project sites
862c848
< o Remove per-backend parameter file and move into shared memory?
> o Remove per-backend parameter file and move into shared memory
877,878c863,864
< o Update clients to use data types, typmod, schema.table.column names of
< result sets using new query protocol
> o Update clients to use data types, typmod, schema.table.column names
> of result sets using new query protocol
900d885
< * Kris is Kris Jurka
910c895
< * Simon is Simon Riggs
> * Simon is Simon Riggs <simon@2ndquadrant.com>
913d897
< * Teodor is
2004-11-11 11:59:14 +08:00
|
|
|
* Add a GUC variable to warn about non-standard SQL usage in queries
|
2008-04-19 20:16:21 +08:00
|
|
|
* Add SQL-standard MERGE/REPLACE/UPSERT command
|
2005-11-16 07:08:24 +08:00
|
|
|
|
2008-04-19 20:16:21 +08:00
|
|
|
MERGE is typically used to merge two tables. REPLACE or UPSERT
|
|
|
|
|
command does UPDATE, or on failure, INSERT. This is similar to UPDATE,
|
|
|
|
|
then for unmatched rows, INSERT. Whether concurrent access allows
|
|
|
|
|
modifications which could cause row loss is implementation independent.
|
2005-11-16 07:08:24 +08:00
|
|
|
To implement this cleanly requires that the table have a unique index
|
2008-04-19 20:16:21 +08:00
|
|
|
so duplicate checking can be easily performed. It is possible to do it
|
|
|
|
|
without a unique index if we require the user to LOCK the table before
|
|
|
|
|
the MERGE.
|
2007-07-17 08:07:54 +08:00
|
|
|
|
2007-03-03 11:08:46 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2005-11/msg00501.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2005-11/msg00536.php
|
2008-06-24 06:23:54 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-04/msg01157.php
|
2008-04-24 06:38:47 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-04/msg01475.php
|
2008-06-27 03:18:37 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-04/msg01890.php
|
2007-03-03 11:08:46 +08:00
|
|
|
|
Cleaups:
< * Allow GRANT/REVOKE permissions to be given to all schema objects with one
> * Allow GRANT/REVOKE permissions to be applied to all schema objects with one
60c60
< specifications. This is because new databases are created by copying
> specifications. This is because new databases are created by copying
63c63
< directory would create a new database with tables that had incorrect
> directory would create a new database with tables that had incorrect
72c72
<
>
85c85
< By not showing commented-out variables, we discourage people from
> By not showing commented-out variables, we discourage people from
91c91
< * Allow point-in-time recovery to archive partially filled write-ahead
> * Allow point-in-time recovery to archive partially filled write-ahead
102c102
< Currently all schemas are owned by the super-user because they are
> Currently all schemas are owned by the super-user because they are
128c128
< * Allow INET subnet tests with non-constants to be indexed
> * Allow INET subnet tests using non-constants to be indexed
143,144c143,144
< * Allow to_char to print localized month names
< * Allow functions to have a search path specified at creation time
> * Allow to_char() to print localized month names
> * Allow functions to have a schema search path specified at creation time
146c146
< * Add GUC variable to allow output of interval values in ISO8601 format
> * Add a GUC variable to allow output of interval values in ISO8601 format
154,155c154,155
< * Prevent inet cast to cidr if the unmasked bits are not zero, or
< zero bits
> * Prevent INET cast to CIDR if the unmasked bits are not zero, or
> zero the bits
158c158
< o Allow nulls in arrays
> o Allow NULLs in arrays
160,161c160,161
< o Delay resolution of array expression type so assignment coercion
< can be performed on empty array expressions
> o Delay resolution of array expression's data type so assignment
> coercion can be performed on empty array expressions
218,219c218,219
< key, foreign key [inheritance]
< * UNIQUE INDEX on base column not honored on inserts/updates from
> key, foreign key
> * UNIQUE INDEX on base column not honored on INSERTs/UPDATEs from
221c221
< (dup) should fail [inheritance]
> (dup) should fail
246c246
< * Fetch heap pages matching index entries in sequential order [performance]
> * Fetch heap pages matching index entries in sequential order
307c307
< functionality in DELETE. It's been agreed that the keyword should
> functionality in DELETE. It's been agreed that the keyword should
318c318
< * Allow PREPARE to automatically determine parameter types based on the SQL
> * Allow PREPARE to automatically determine parameter types based on the SQL
340,342d339
< * Allow CREATE TABLE foo (f1 INT CHECK (f1 > 0) CHECK (f1 < 10)) to work
< by searching for non-conflicting constraint names, and prefix with
< table name?
347c344
< new database.
> a new database.
350,351d346
< * Ignore temporary tables from other sessions when processing
< inheritance?
354,355c349,351
< * Add a session mode to warn about non-standard SQL usage in queries
< * Add MERGE command that does UPDATE/DELETE, or on failure, INSERT (rules, triggers?)
> * Add a GUC variable to warn about non-standard SQL usage in queries
> * Add MERGE command that does UPDATE/DELETE, or on failure, INSERT (rules,
> triggers?)
357,359c353,356
< * Add NOVICE output level for helpful messages like automatic sequence/index creation
< * Add COMMENT ON for all cluster global objects (users, groups,
< databases and tablespaces)
> * Add NOVICE output level for helpful messages like automatic sequence/index
> creation
> * Add COMMENT ON for all cluster global objects (users, groups, databases
> and tablespaces)
363c360
< When enabled, this would allow errors in multi-statement transactions
> When enabled, this would allow errors in multi-statement transactions
417c414
< o Allow COPY to optionally include column headings as the first line
> o Allow COPY to optionally include column headings in the first line
450c447
<
>
462c459
< o Handle references to temporary tables that are created, destroyed,
> o Handle references to temporary tables that are created, destroyed,
464c461
<
>
469d465
< o Improve PL/PgSQL exception handling using savepoints
488c484
<
>
503d498
<
518c513
< o Add pg_dumpall custom format dumps.
> o Add pg_dumpall custom format dumps.
520c515
< This is probably best done by combining pg_dump and pg_dumpall
> This is probably best done by combining pg_dump and pg_dumpall
532d526
< o Improve error handling (?)
555c549
< Adding shared locks requires recording the table/rows numbers in a
> Adding shared locks requires recording the table/rows numbers in a
643c637
< Posix_fadvise() can control both sequential/random file caching and
> Posix_fadvise() can control both sequential/random file caching and
703c697
< from distributted.net, http://www1.distributed.net/source,
> from distributted.net, http://www1.distributed.net/source,
729c723
< * Add connection pooling [pool]
> * Add connection pooling
755d748
<
759c752
<
>
768c761
< so an abrupt operating system restart might lose a few seconds of
> so an abrupt operating system restart might lose a few seconds of
785c778
< * Add utility to compute accurate random_page_cost value
> * Create utility to compute accurate random_page_cost value
787,789d779
< * Allow sorting, temp files, temp tables to use multiple work directories
<
< This allows the I/O load to be spread across multiple disk drives.
795a786
>
808,809c799,800
<
< * Use mmap() rather than SYSV shared memory or to write WAL files (?) [mmap]
>
> * Use mmap() rather than SYSV shared memory or to write WAL files (?)
812,813c803,804
< portability issues. Anonymous mmap (or mmap to /dev/zero) is required
< to prevent I/O overhead.
> portability issues. Anonymous mmap (or mmap to /dev/zero) is required
> to prevent I/O overhead.
817,819c808,810
< Doing I/O to large tables would consume a lot of address space or
< require frequent mapping/unmapping. Extending the file also causes
< mapping problems that might require mapping only individual pages,
> Doing I/O to large tables would consume a lot of address space or
> require frequent mapping/unmapping. Extending the file also causes
> mapping problems that might require mapping only individual pages,
821c812
< way to _prevent_ I/O to disk from the dirty shared buffers so changes
> way to _prevent_ I/O to disk from the dirty shared buffers so changes
826c817
< tuple overhead
> per-tuple overhead
829,831c820,822
< This would involve using multiple threads or processes to do optimization,
< sorting, or execution of single query. The major advantage of such a
< feature would be to allow multiple CPUs to work together to process a
> This would involve using multiple threads or processes to do optimization,
> sorting, or execution of single query. The major advantage of such a
> feature would be to allow multiple CPUs to work together to process a
834c825
< * Research the use of larger pages sizes
> * Research the use of larger page sizes
842a834
> * Move some /contrib modules out to their own project sites
845d836
< * Improve access-permissions check on data directory in Cygwin (Tom)
847,848c838
< * Clarify use of 'application' and 'command' tags in SGML docs
< * Better document ability to build only certain interfaces (Marc)
> * Improve documentation to build only interfaces (Marc)
852,853d841
< * Research interaction of setitimer() and sleep() used by statement_timeout
< * Rename /scripts directory because they are all C programs now
856,857d843
< * Allow binaries to be statically linked so they are more easily relocated
< * Move some /contrib modules out to their own project sites
862c848
< o Remove per-backend parameter file and move into shared memory?
> o Remove per-backend parameter file and move into shared memory
877,878c863,864
< o Update clients to use data types, typmod, schema.table.column names of
< result sets using new query protocol
> o Update clients to use data types, typmod, schema.table.column names
> of result sets using new query protocol
900d885
< * Kris is Kris Jurka
910c895
< * Simon is Simon Riggs
> * Simon is Simon Riggs <simon@2ndquadrant.com>
913d897
< * Teodor is
2004-11-11 11:59:14 +08:00
|
|
|
* Add NOVICE output level for helpful messages like automatic sequence/index
|
|
|
|
|
creation
|
Update wording, query -> statement:
< * %Allow pooled connections to list all prepared queries
> * %Allow pooled connections to list all prepared statements
28c28
< the queries prepared in the current session.
> the statements prepared in the current session.
143c143
< o Allow a warm standby system to also allow read-only queries
> o Allow a warm standby system to also allow read-only statements
404c404
< * Add GUC to issue notice about queries that use unjoined tables
> * Add GUC to issue notice about statements that use unjoined tables
490c490
< Another idea would be to allow actual SELECT queries in a COPY.
> Another idea would be to allow actual SELECT statements in a COPY.
554c554
< o Allow function argument names to be queries from PL/PgSQL
> o Allow function argument names to be statements from PL/PgSQL
591c591
< o Improve psql's handling of multi-line queries
> o Improve psql's handling of multi-line statements
< Currently, while \e saves a single query as one entry, interactive
< queries are saved one line at a time. Ideally all queries
> Currently, while \e saves a single statement as one entry, interactive
> statements are saved one line at a time. Ideally all statements
665c665
< o Allow query results to be automatically batched to the client
> o Allow statement results to be automatically batched to the client
667c667
< Currently, all query results are transfered to the libpq
> Currently, all statement results are transfered to the libpq
672c672
< One complexity is that a query like SELECT 1/col could error
> One complexity is that a statement like SELECT 1/col could error
739c739
< * Allow queries across databases or servers with transaction
> * Allow statements across databases or servers with transaction
< inheritance, allow it to work for UPDATE and DELETE queries, and allow
< it to be used for all queries with little performance impact
> inheritance, allow it to work for UPDATE and DELETE statements, and allow
> it to be used for all statements with little performance impact
876c876
< * Consider automatic caching of queries at various levels:
> * Consider automatic caching of statements at various levels:
947c947
< a single session using multiple threads to execute a query faster.
> a single session using multiple threads to execute a statement faster.
1025c1025
< * Log queries where the optimizer row estimates were dramatically
> * Log statements where the optimizer row estimates were dramatically
1146c1146
< of result sets using new query protocol
> of result sets using new statement protocol
2005-12-12 21:36:36 +08:00
|
|
|
* Add GUC to issue notice about statements that use unjoined tables
|
2007-08-28 11:00:36 +08:00
|
|
|
* Allow EXPLAIN to identify tables that were skipped because of
|
2005-08-23 01:35:03 +08:00
|
|
|
constraint_exclusion
|
2007-06-14 05:38:00 +08:00
|
|
|
* Allow EXPLAIN output to be more easily processed by scripts, perhaps XML
|
Remove completed TODO items:
< * -Make postmater and postgres options distinct so the postmaster -o
< option is no longer needed
< * -Allow pooled connections to list all prepared statements
<
< This would allow an application inheriting a pooled connection to know
< the statements prepared in the current session.
<
< * -Re-enable the GUC full_page_writes in 8.2 when reliability issues have
< been addressed
< o -Add "include file" functionality in postgresql.conf
< o -Allow per-database permissions to be set via GRANT
<
< Allow database connection checks based on GRANT rules in
< addition to the existing access checks in pg_hba.conf.
<
< o -Issue a warning if a change-on-restart-only postgresql.conf value
> o Issue a warning if a change-on-restart-only postgresql.conf value
< o -Automatically force archiving of partially-filled WAL files when
< pg_stop_backup() is called or the server is stopped
< o -Add reporting of the current WAL file and offset, perhaps as
< part of partial log file archiving
< * -Allow server logs to be remotely read and removed using SQL commands
< * -Allow protocol-level BIND parameter values to be logged
< * -Zero umasked bits in conversion from INET cast to CIDR
< * -Prevent INET cast to CIDR from dropping netmask, SELECT '1.1.1.1'::inet::cidr
< * -Allow INET + INT8 to increment the host part of the address or
< throw an error on overflow
< * -Add 'tid != tid ' operator for use in corruption recovery
< o -Allow customization of the known set of TZ names (generalize the
< present australian_timezones hack)
< o -Allow timezone names in SQL strings, '2006-05-24 21:11
< Americas/New_York'::timestamptz
< o -Add support for day-time syntax, INTERVAL '1 2:03:04' DAY TO
< SECOND
< o -Allow NULLs in arrays
< * -Add transaction_timestamp(), statement_timestamp(), clock_timestamp()
< functionality
<
< Current CURRENT_TIMESTAMP returns the start time of the current
< transaction, and gettimeofday() returns the wallclock time. This will
< make time reporting more consistent and will allow reporting of
< the statement start time.
<
< * -Allow to_char() to print localized month names
< * -Add sleep() function, remove from regress.c
< * -Allow user-defined functions retuning a domain value to enforce domain
< constraints
< * -Allow TRUNCATE ... CASCADE/RESTRICT
<
< This is like DELETE CASCADE, but truncates.
<
< * -Add COMMENT ON for all cluster global objects (roles, databases
< and tablespaces)
< * -Make row-wise comparisons work per SQL spec
<
< Right now, '(a, b) < (1, 2)' is processed as 'a < 1 and b < 2', but
< the SQL standard requires it to be processed as a column-by-column
< comparison, so the proper comparison is '(a < 1) OR (a = 1 AND b < 2)'.
<
< * -Enable escape_string_warning and standard_conforming_strings
> * Enable standard_conforming_strings
< o -Add ON COMMIT capability to CREATE TABLE AS ... SELECT
< o -Allow an alias to be provided for the target table in
< UPDATE/DELETE (Neil)
< o -Allow UPDATE tab SET ROW (col, ...) = (val, ...) for updating
< multiple columns
< o -Add ALTER TABLE tab INHERIT / NO INHERIT parent
< o -Have COPY return the number of rows loaded/unloaded?
< o -Allow COPY (SELECT ...) TO 'filename'
<
< o -Allow pooled connections to list all open WITH HOLD cursors
<
< Because WITH HOLD cursors exist outside transactions, this allows
< them to be listed so they can be closed.
<
< o -Allow INSERT INTO tab (col1, ..) VALUES (val1, ..), (val2, ..)
< o -Allow INSERT/UPDATE ... RETURNING new.col or old.col
< o -Allow PL/python to return composite types and result sets
<
< * -Have initdb set the input DateStyle (MDY or DMY) based on locale
< o -Improve psql's handling of multi-line statements
<
< Currently, while \e saves a single statement as one entry, interactive
< statements are saved one line at a time. Ideally all statements
< would be saved like \e does.
<
< o -Allow multi-line column values to align in the proper columns
<
< If the second output column value is 'a\nb', the 'b' should appear
< in the second display column, rather than the first column as it
< does now.
<
< o -Display IN, INOUT, and OUT parameters in \df
< o -Allow pg_dump to use multiple -t and -n switches, exclusion
< ability, and regular expression object matching
< o -Update pg_dump and psql to use the new COPY libpq API (Christopher)
< o -Add a function to support Parse/DescribeStatement capability
< * -Add fillfactor to control reserved free space during index creation
< * -Add system view to show free space map contents
< * -Allow installing to directories containing spaces
<
< This is possible if proper quoting is added to the makefiles for the
< install targets. Because PostgreSQL supports relocatable installs, it
< is already possible to install into a directory that doesn't contain
< spaces and then copy the install to a directory with spaces.
<
< * -%Clean up compiler warnings (especially with gcc version 4)
< * -Remove BeOS and QNX-specific code
< o -Port contrib/xml2
2006-09-20 03:20:00 +08:00
|
|
|
* Enable standard_conforming_strings
|
Update TODO list based on 8.3 completed items:
< * Allow major upgrades without dump/reload, perhaps using pg_upgrade
< [pg_upgrade]
< * Check for unreferenced table files created by transactions that were
< in-progress when the server terminated abruptly
<
< http://archives.postgresql.org/pgsql-patches/2006-06/msg00096.php
<
> * Check for unreferenced table files created by transactions that were
> in-progress when the server terminated abruptly
>
> http://archives.postgresql.org/pgsql-patches/2006-06/msg00096.php
>
< * Support table partitioning that allows a single table to be stored
< in subtables that are partitioned based on the primary key or a WHERE
< clause
< creation of rules for INSERT/UPDATE/DELETE, and constraints for
< rapid partition selection. Options could include range and hash
> creation of triggers or rules for INSERT/UPDATE/DELETE, and constraints
> for rapid partition selection. Options could include range and hash
<
< * Improve replication solutions
<
< o Load balancing
<
< You can use any of the master/slave replication servers to use a
< standby server for data warehousing. To allow read/write queries to
< multiple servers, you need multi-master replication like pgcluster.
<
< o Allow replication over unreliable or non-persistent links
<
<
< o Mark change-on-restart-only values in postgresql.conf
< All objects in the default database tablespace must have default
< tablespace specifications. This is because new databases are
< created by copying directories. If you mix default tablespace
< tables and tablespace-specified tables in the same directory,
< creating a new database from such a mixed directory would create a
< new database with tables that had incorrect explicit tablespaces.
< To fix this would require modifying pg_class in the newly copied
< database, which we don't currently do.
> Currently all objects in the default database tablespace must
> have default tablespace specifications. This is because new
> databases are created by copying directories. If you mix default
> tablespace tables and tablespace-specified tables in the same
> directory, creating a new database from such a mixed directory
> would create a new database with tables that had incorrect
> explicit tablespaces. To fix this would require modifying
> pg_class in the newly copied database, which we don't currently
> do.
<
< o Allow recovery.conf to allow the same syntax as
> o Allow recovery.conf to support the same syntax as
< * Allow user-defined types to specify a type modifier at table creation
< time
< * Allow all data types to cast to and from TEXT
<
< http://archives.postgresql.org/pgsql-hackers/2007-04/msg00017.php
<
<
< o Add support for year-month syntax, INTERVAL '50-6' YEAR TO MONTH
< o Interpret INTERVAL '1 year' MONTH as CAST (INTERVAL '1 year' AS
< INTERVAL MONTH), and this should return '12 months'
> o Add support for year-month syntax, INTERVAL '50-6' YEAR
> TO MONTH
> o Interpret INTERVAL '1 year' MONTH as CAST (INTERVAL '1
> year' AS INTERVAL MONTH), and this should return '12 months'
< * Allow MONEY to be cast to/from other numeric data types
> * Allow MONEY to be easily cast to/from other numeric data types
>
< * Allow functions to have a schema search path specified at creation time
< * Fix cases where invalid byte encodings are accepted by the database,
< but throw an error on SELECT
<
< http://archives.postgresql.org/pgsql-hackers/2007-03/msg00767.php
< * Improve logging of prepared statements recovered during startup
> * Improve logging of prepared transactions recovered during startup
< * Make standard_conforming_strings the default in 8.4?
> * Make standard_conforming_strings the default in 8.5?
< * Allow the count returned by SELECT, etc to be to represent as an int64
> * Allow the count returned by SELECT, etc to be represented as an int64
< o Use more reliable method for CREATE DATABASE to get a consistent
< copy of db?
< o Fix transaction restriction checks for CREATE DATABASE and
< other commands
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00133.php
< currently allowed.
> currently allowed. This currently is done if the table is
> created inside the same transaction block as the COPY because
> no other backends can see the table.
< o Add SET PATH for schemas?
<
< This is basically the same as SET search_path.
< o Enforce referential integrity for system tables
< o Add Oracle-style packages (Pavel)
<
< A package would be a schema with session-local variables,
< public/private functions, and initialization functions. It
< is also possible to implement these capabilities
< in all schemas and not use a separate "packages"
< syntax at all.
<
< http://archives.postgresql.org/pgsql-hackers/2006-08/msg00384.php
<
< o Add single-step debugging of functions
< o Allow RETURN to return row or record functions
<
< http://archives.postgresql.org/pgsql-patches/2005-11/msg00045.php
< http://archives.postgresql.org/pgsql-patches/2006-08/msg00397.php
< http://archives.postgresql.org/pgsql-hackers/2006-09/msg00388.php
<
< o Fix problems with RETURN NEXT on tables with
< dropped/added columns after function creation
<
< http://archives.postgresql.org/pgsql-patches/2006-02/msg00165.php
<
< * Make consistent use of long/short command options --- pg_ctl needs
< long ones, pg_config doesn't have short ones, postgres doesn't have
< enough long ones, etc.
<
<
<
< o Consider parsing the -c string into individual queries so each
< is run in its own transaction
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00291.php
<
<
< o Remove unnecessary function pointer abstractions in pg_dump source
< code
> o Remove unnecessary function pointer abstractions in pg_dump source
> code
<
<
< o Fix SSL retry to avoid useless repeated connection attempts and
< ensuing misleading error messages
>
<
< This is difficult because it requires datatype-specific knowledge.
<
< * Improve commit_delay handling to reduce fsync()
< * %Add an option to sync() before fsync()'ing checkpoint files
>
< * Reduce lock time during VACUUM FULL by moving tuples with read lock,
< then write lock and truncate table
<
< Moved tuples are invisible to other backends so they don't require a
< write lock. However, the read lock promotion to write lock could lead
< to deadlock situations.
<
< * Prevent long-lived temporary tables from causing frozen-xid advancement
< starvation
<
< The problem is that autovacuum cannot vacuum them to set frozen xids;
< only the session that created them can do that.
<
<
<
< o Use free-space map information to guide refilling
< o Consider logging activity either to the logs or a system view
> The problem is that autovacuum cannot vacuum them to set frozen xids;
> only the session that created them can do that.
< * Add connection pooling
<
< It is unclear if this should be done inside the backend code or done
< by something external like pgpool. The passing of file descriptors to
< existing backends is one of the difficulties with a backend approach.
<
< * Consider reducing memory used for shared buffer reference count
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00752.php
<
< * %Remove memory/file descriptor freeing before ereport(ERROR)
< * %Promote debug_query_string into a server-side function current_query()
< * Allow ecpg to work with MSVC and BCC
< * Add xpath_array() to /contrib/xml2 to return results as an array
< * Allow building in directories containing spaces
<
< This is probably not possible because 'gmake' and other compiler tools
< do not fully support quoting of paths with spaces.
<
< * Fix sgmltools so PDFs can be generated with bookmarks
< * Split out libpq pgpass and environment documentation sections to make
< it easier for non-developers to find
< * Use strlcpy() rather than our StrNCpy() macro
<
< http://archives.postgresql.org/pgsql-hackers/2006-09/msg02108.php
<
< o Re-enable timezone output on log_line_prefix '%t' when a
< shorter timezone string is available
< * Allow statements across databases or servers with transaction
< semantics
<
< This can be done using dblink and two-phase commit.
> * Add Oracle-style packages (Pavel)
< * Add the features of packages
> A package would be a schema with session-local variables,
> public/private functions, and initialization functions. It
> is also possible to implement these capabilities
> in any schema and not use a separate "packages"
> syntax at all.
< o Make private objects accessible only to objects in the same schema
< o Allow current_schema.objname to access current schema objects
< o Add session variables
< o Allow nested schemas
> http://archives.postgresql.org/pgsql-hackers/2006-08/msg00384.php
2007-12-30 11:22:53 +08:00
|
|
|
* Make standard_conforming_strings the default in 8.5?
|
2006-04-23 12:00:06 +08:00
|
|
|
|
|
|
|
|
When this is done, backslash-quote should be prohibited in non-E''
|
|
|
|
|
strings because of possible confusion over how such strings treat
|
|
|
|
|
backslashes. Basically, '' is always safe for a literal single
|
|
|
|
|
quote, while \' might or might not be based on the backslash
|
|
|
|
|
handling rules.
|
|
|
|
|
|
2005-09-24 05:55:01 +08:00
|
|
|
* Simplify dropping roles that have objects in several databases
|
2005-11-29 06:21:58 +08:00
|
|
|
* Allow COMMENT ON to accept an expression rather than just a string
|
Update TODO list based on 8.3 completed items:
< * Allow major upgrades without dump/reload, perhaps using pg_upgrade
< [pg_upgrade]
< * Check for unreferenced table files created by transactions that were
< in-progress when the server terminated abruptly
<
< http://archives.postgresql.org/pgsql-patches/2006-06/msg00096.php
<
> * Check for unreferenced table files created by transactions that were
> in-progress when the server terminated abruptly
>
> http://archives.postgresql.org/pgsql-patches/2006-06/msg00096.php
>
< * Support table partitioning that allows a single table to be stored
< in subtables that are partitioned based on the primary key or a WHERE
< clause
< creation of rules for INSERT/UPDATE/DELETE, and constraints for
< rapid partition selection. Options could include range and hash
> creation of triggers or rules for INSERT/UPDATE/DELETE, and constraints
> for rapid partition selection. Options could include range and hash
<
< * Improve replication solutions
<
< o Load balancing
<
< You can use any of the master/slave replication servers to use a
< standby server for data warehousing. To allow read/write queries to
< multiple servers, you need multi-master replication like pgcluster.
<
< o Allow replication over unreliable or non-persistent links
<
<
< o Mark change-on-restart-only values in postgresql.conf
< All objects in the default database tablespace must have default
< tablespace specifications. This is because new databases are
< created by copying directories. If you mix default tablespace
< tables and tablespace-specified tables in the same directory,
< creating a new database from such a mixed directory would create a
< new database with tables that had incorrect explicit tablespaces.
< To fix this would require modifying pg_class in the newly copied
< database, which we don't currently do.
> Currently all objects in the default database tablespace must
> have default tablespace specifications. This is because new
> databases are created by copying directories. If you mix default
> tablespace tables and tablespace-specified tables in the same
> directory, creating a new database from such a mixed directory
> would create a new database with tables that had incorrect
> explicit tablespaces. To fix this would require modifying
> pg_class in the newly copied database, which we don't currently
> do.
<
< o Allow recovery.conf to allow the same syntax as
> o Allow recovery.conf to support the same syntax as
< * Allow user-defined types to specify a type modifier at table creation
< time
< * Allow all data types to cast to and from TEXT
<
< http://archives.postgresql.org/pgsql-hackers/2007-04/msg00017.php
<
<
< o Add support for year-month syntax, INTERVAL '50-6' YEAR TO MONTH
< o Interpret INTERVAL '1 year' MONTH as CAST (INTERVAL '1 year' AS
< INTERVAL MONTH), and this should return '12 months'
> o Add support for year-month syntax, INTERVAL '50-6' YEAR
> TO MONTH
> o Interpret INTERVAL '1 year' MONTH as CAST (INTERVAL '1
> year' AS INTERVAL MONTH), and this should return '12 months'
< * Allow MONEY to be cast to/from other numeric data types
> * Allow MONEY to be easily cast to/from other numeric data types
>
< * Allow functions to have a schema search path specified at creation time
< * Fix cases where invalid byte encodings are accepted by the database,
< but throw an error on SELECT
<
< http://archives.postgresql.org/pgsql-hackers/2007-03/msg00767.php
< * Improve logging of prepared statements recovered during startup
> * Improve logging of prepared transactions recovered during startup
< * Make standard_conforming_strings the default in 8.4?
> * Make standard_conforming_strings the default in 8.5?
< * Allow the count returned by SELECT, etc to be to represent as an int64
> * Allow the count returned by SELECT, etc to be represented as an int64
< o Use more reliable method for CREATE DATABASE to get a consistent
< copy of db?
< o Fix transaction restriction checks for CREATE DATABASE and
< other commands
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00133.php
< currently allowed.
> currently allowed. This currently is done if the table is
> created inside the same transaction block as the COPY because
> no other backends can see the table.
< o Add SET PATH for schemas?
<
< This is basically the same as SET search_path.
< o Enforce referential integrity for system tables
< o Add Oracle-style packages (Pavel)
<
< A package would be a schema with session-local variables,
< public/private functions, and initialization functions. It
< is also possible to implement these capabilities
< in all schemas and not use a separate "packages"
< syntax at all.
<
< http://archives.postgresql.org/pgsql-hackers/2006-08/msg00384.php
<
< o Add single-step debugging of functions
< o Allow RETURN to return row or record functions
<
< http://archives.postgresql.org/pgsql-patches/2005-11/msg00045.php
< http://archives.postgresql.org/pgsql-patches/2006-08/msg00397.php
< http://archives.postgresql.org/pgsql-hackers/2006-09/msg00388.php
<
< o Fix problems with RETURN NEXT on tables with
< dropped/added columns after function creation
<
< http://archives.postgresql.org/pgsql-patches/2006-02/msg00165.php
<
< * Make consistent use of long/short command options --- pg_ctl needs
< long ones, pg_config doesn't have short ones, postgres doesn't have
< enough long ones, etc.
<
<
<
< o Consider parsing the -c string into individual queries so each
< is run in its own transaction
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00291.php
<
<
< o Remove unnecessary function pointer abstractions in pg_dump source
< code
> o Remove unnecessary function pointer abstractions in pg_dump source
> code
<
<
< o Fix SSL retry to avoid useless repeated connection attempts and
< ensuing misleading error messages
>
<
< This is difficult because it requires datatype-specific knowledge.
<
< * Improve commit_delay handling to reduce fsync()
< * %Add an option to sync() before fsync()'ing checkpoint files
>
< * Reduce lock time during VACUUM FULL by moving tuples with read lock,
< then write lock and truncate table
<
< Moved tuples are invisible to other backends so they don't require a
< write lock. However, the read lock promotion to write lock could lead
< to deadlock situations.
<
< * Prevent long-lived temporary tables from causing frozen-xid advancement
< starvation
<
< The problem is that autovacuum cannot vacuum them to set frozen xids;
< only the session that created them can do that.
<
<
<
< o Use free-space map information to guide refilling
< o Consider logging activity either to the logs or a system view
> The problem is that autovacuum cannot vacuum them to set frozen xids;
> only the session that created them can do that.
< * Add connection pooling
<
< It is unclear if this should be done inside the backend code or done
< by something external like pgpool. The passing of file descriptors to
< existing backends is one of the difficulties with a backend approach.
<
< * Consider reducing memory used for shared buffer reference count
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00752.php
<
< * %Remove memory/file descriptor freeing before ereport(ERROR)
< * %Promote debug_query_string into a server-side function current_query()
< * Allow ecpg to work with MSVC and BCC
< * Add xpath_array() to /contrib/xml2 to return results as an array
< * Allow building in directories containing spaces
<
< This is probably not possible because 'gmake' and other compiler tools
< do not fully support quoting of paths with spaces.
<
< * Fix sgmltools so PDFs can be generated with bookmarks
< * Split out libpq pgpass and environment documentation sections to make
< it easier for non-developers to find
< * Use strlcpy() rather than our StrNCpy() macro
<
< http://archives.postgresql.org/pgsql-hackers/2006-09/msg02108.php
<
< o Re-enable timezone output on log_line_prefix '%t' when a
< shorter timezone string is available
< * Allow statements across databases or servers with transaction
< semantics
<
< This can be done using dblink and two-phase commit.
> * Add Oracle-style packages (Pavel)
< * Add the features of packages
> A package would be a schema with session-local variables,
> public/private functions, and initialization functions. It
> is also possible to implement these capabilities
> in any schema and not use a separate "packages"
> syntax at all.
< o Make private objects accessible only to objects in the same schema
< o Allow current_schema.objname to access current schema objects
< o Add session variables
< o Allow nested schemas
> http://archives.postgresql.org/pgsql-hackers/2006-08/msg00384.php
2007-12-30 11:22:53 +08:00
|
|
|
* Allow the count returned by SELECT, etc to be represented as an int64
|
2005-12-17 09:48:37 +08:00
|
|
|
to allow a higher range of values
|
2006-02-01 08:07:26 +08:00
|
|
|
* Add SQL99 WITH clause to SELECT
|
2006-06-09 09:02:22 +08:00
|
|
|
* Add SQL:2003 WITH RECURSIVE (hierarchical) queries to SELECT
|
2008-03-06 00:02:31 +08:00
|
|
|
|
2008-03-07 06:04:57 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-01/msg01375.php
|
2008-03-06 00:02:31 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-02/msg00642.php
|
2008-03-07 06:15:27 +08:00
|
|
|
http://archives.postgresql.org/pgsql-patches/2007-03/msg00139.php
|
2008-03-18 06:54:23 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-11/msg01334.php
|
2008-04-03 09:56:04 +08:00
|
|
|
http://archives.postgresql.org/pgsql-patches/2008-01/msg00105.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-patches/2008-03/msg00327.php
|
2008-03-06 00:02:31 +08:00
|
|
|
|
2006-05-05 17:35:58 +08:00
|
|
|
* Add DEFAULT .. AS OWNER so permission checks are done as the table
|
|
|
|
|
owner
|
|
|
|
|
|
|
|
|
|
This would be useful for SERIAL nextval() calls and CHECK constraints.
|
2005-07-05 01:00:32 +08:00
|
|
|
|
2006-07-29 03:00:45 +08:00
|
|
|
* Allow DISTINCT to work in multiple-argument aggregate calls
|
2006-07-30 02:08:36 +08:00
|
|
|
* Add column to pg_stat_activity that shows the progress of long-running
|
|
|
|
|
commands like CREATE INDEX and VACUUM
|
2008-05-10 09:40:09 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-patches/2008-04/msg00203.php
|
|
|
|
|
|
2006-08-26 07:43:46 +08:00
|
|
|
* Implement SQL:2003 window functions
|
2008-07-17 05:03:45 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-06/msg00380.php
|
2008-07-18 10:03:28 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-07/msg00232.php
|
2008-07-17 05:03:45 +08:00
|
|
|
|
2008-06-13 02:09:04 +08:00
|
|
|
* Allow INSERT/UPDATE ... RETURNING inside a SELECT 'FROM' clause or
|
|
|
|
|
target list
|
2007-02-20 04:06:56 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-general/2006-09/msg00803.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-10/msg00693.php
|
2008-06-13 02:09:04 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-06/msg00124.php
|
2007-02-20 04:06:56 +08:00
|
|
|
|
2007-02-21 06:29:28 +08:00
|
|
|
* Increase locking when DROPing objects so dependent objects cannot
|
|
|
|
|
get dropped while the DROP operation is happening
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-01/msg00937.php
|
2005-07-31 11:08:35 +08:00
|
|
|
|
2008-02-17 07:27:34 +08:00
|
|
|
* -Allow AS in "SELECT col AS label" to be optional in certain cases
|
|
|
|
|
|
2008-03-04 05:26:09 +08:00
|
|
|
* Allow INSERT ... DELETE ... RETURNING, namely allow the DELETE ...
|
|
|
|
|
RETURNING to supply values to the INSERT
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-02/thrd2.php#00979
|
|
|
|
|
|
2008-03-07 22:57:39 +08:00
|
|
|
* Add comments on system tables/columns using the information in
|
|
|
|
|
catalogs.sgml
|
|
|
|
|
|
|
|
|
|
Ideally the information would be pulled from the SGML file
|
|
|
|
|
automatically.
|
|
|
|
|
|
2008-03-25 00:05:45 +08:00
|
|
|
* Improve reporting of UNION type mismatches
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-04/msg00944.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-03/msg00597.php
|
|
|
|
|
|
2008-03-07 22:57:39 +08:00
|
|
|
|
2005-07-05 01:43:42 +08:00
|
|
|
* CREATE
|
|
|
|
|
|
|
|
|
|
o Allow CREATE TABLE AS to determine column lengths for complex
|
|
|
|
|
expressions like SELECT col1 || col2
|
|
|
|
|
|
2007-04-10 09:22:12 +08:00
|
|
|
o Have WITH CONSTRAINTS also create constraint indexes
|
2007-07-17 08:07:54 +08:00
|
|
|
|
2007-04-10 09:22:12 +08:00
|
|
|
http://archives.postgresql.org/pgsql-patches/2007-04/msg00149.php
|
2005-07-05 01:43:42 +08:00
|
|
|
|
2008-03-06 11:22:32 +08:00
|
|
|
o Have CONSTRAINT cname NOT NULL record the contraint name
|
2008-03-06 11:18:19 +08:00
|
|
|
|
|
|
|
|
Right now pg_attribute.attnotnull records the NOT NULL status
|
|
|
|
|
of the column, but does not record the contraint name
|
|
|
|
|
|
2008-03-25 08:11:48 +08:00
|
|
|
o Prevent concurrent CREATE TABLE table1 from sometimes returning
|
|
|
|
|
a cryptic error message
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-bugs/2007-10/msg00169.php
|
2008-03-06 11:18:19 +08:00
|
|
|
|
2008-05-08 09:49:43 +08:00
|
|
|
o Add CREATE SCHEMA ... LIKE that copies a schema
|
|
|
|
|
|
2008-08-14 09:57:42 +08:00
|
|
|
o Add CREATE TABLE LIKE ... INCLUDING COMMENTS
|
2008-05-08 09:49:43 +08:00
|
|
|
|
2008-03-07 09:06:36 +08:00
|
|
|
|
2005-07-05 01:43:42 +08:00
|
|
|
* UPDATE
|
2006-09-03 04:31:50 +08:00
|
|
|
o Allow UPDATE tab SET ROW (col, ...) = (SELECT...)
|
2005-07-05 01:43:42 +08:00
|
|
|
|
2006-07-28 06:05:49 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-07/msg01306.php
|
2007-04-03 09:16:24 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-03/msg00865.php
|
2008-03-18 23:30:59 +08:00
|
|
|
http://archives.postgresql.org/pgsql-patches/2007-04/msg00315.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-patches/2008-03/msg00237.php
|
2005-07-05 01:43:42 +08:00
|
|
|
|
2007-06-02 02:40:42 +08:00
|
|
|
o Research self-referential UPDATEs that see inconsistent row versions
|
|
|
|
|
in read-committed mode
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-05/msg00507.php
|
2007-06-02 02:41:55 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-06/msg00016.php
|
2007-06-02 02:40:42 +08:00
|
|
|
|
2007-07-18 08:16:21 +08:00
|
|
|
o Allow GLOBAL temporary tables to exist as empty by default in
|
|
|
|
|
all sessions
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-07/msg00006.php
|
|
|
|
|
|
|
|
|
|
|
2001-05-11 04:26:45 +08:00
|
|
|
* ALTER
|
2005-07-05 01:43:42 +08:00
|
|
|
|
2008-03-03 23:06:55 +08:00
|
|
|
o Have ALTER TABLE RENAME rename SERIAL sequence names
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-03/msg00008.php
|
|
|
|
|
|
2007-10-09 02:01:17 +08:00
|
|
|
o Have ALTER SEQUENCE RENAME rename the sequence name stored
|
|
|
|
|
in the sequence table
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-bugs/2007-09/msg00092.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-bugs/2007-10/msg00007.php
|
2008-03-03 23:06:55 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-03/msg00008.php
|
2007-10-09 02:01:17 +08:00
|
|
|
|
Great TODO updates from Tom:
< Currently SIGTERM of a backend can lead to lock table corruption.
> Lock table corruption following SIGTERM of an individual backend
> has been reported in 8.0. A possible cause was fixed in 8.1, but
> it is unknown whether other problems exist. This item mostly
> requires additional testing rather than of writing any new code.
< o Allow postgresql.conf values to be set so they can not be changed
< by the user
166c167,171
< * %Remove Money type, add money formatting for decimal type
> * Improve the MONEY data type
>
> Change the MONEY data type to use DECIMAL internally, with special
> locale-aware output formatting.
>
225c230
< o %Allow MIN()/MAX() on arrays
> o -Allow MIN()/MAX() on arrays
228c233
< o Modify array literal representation to handle array index lower bound
> o -Modify array literal representation to handle array index lower bound
235a241
> o Auto-delete large objects when referencing row is deleted
< Currently large objects entries do not have owners. Permissions can
< only be set at the pg_largeobject table level.
> /contrib/lo offers this functionality.
240d244
< o Auto-delete large objects when referencing row is deleted
< * %Have views on temporary tables exist in the temporary namespace
< * Allow temporary views on non-temporary tables
< * %Allow RULE recompilation
> * -Have views on temporary tables exist in the temporary namespace
> * -Allow temporary views on non-temporary tables
> * Allow VIEW/RULE recompilation when the underlying tables change
340a345,347
>
> This is like DELETE CASCADE, but truncates.
>
381c388
< * Make row-wise comparisons work per SQL spec
> * %Make row-wise comparisons work per SQL spec
< o Currently the system uses the operating system COPY command to
< create a new database. Add ON COMMIT capability to CREATE TABLE AS
< SELECT
> o Add ON COMMIT capability to CREATE TABLE AS ... SELECT
427c432
< o %Add ALTER DOMAIN TYPE
> o Add ALTER DOMAIN to modify the underlying data type
< o %Disallow dropping of an inherited constraint
< o -Allow objects to be moved to different schemas
> o Add missing object types for ALTER ... SET SCHEMA
< o %Prevent child tables from altering constraints like CHECK that were
< inherited from the parent table
> o %Disallow dropping of an inherited constraint
> o %Prevent child tables from altering or dropping constraints
> like CHECK that were inherited from the parent table
< o Handle references to temporary tables that are created, destroyed,
< then recreated during a session, and EXECUTE is not used
<
< This requires the cached PL/PgSQL byte code to be invalidated when
< an object referenced in the function is changed.
<
< o Add table function support to pltcl, plperl, plpython?
< o Allow PL/pgSQL to name columns by ordinal position, e.g. rec.(3)
> o Add table function support to pltcl, plpython
549a548
> o Allow function argument names to be queries from PL/PgSQL
< o Pass arrays natively instead of as text between plperl and postgres
< o Add support for polymorphic arguments and return types to plperl
> o -Pass arrays natively instead of as text between plperl and postgres
> o Add support for polymorphic arguments and return types to
> languages other than PL/PgSQL
> o Add support for OUT and INOUT parameters to languages other
> than PL/PgSQL
< * Allow libpq to access SQLSTATE so pg_ctl can test for connection failure
<
< This would be used for checking if the server is up.
<
565c563
< * Have initdb set DateStyle based on locale?
> * Have initdb set the input DateStyle (MDY or DMY) based on locale?
567d564
< * Add a schema option to createlang
< o Add pg_dumpall custom format dumps.
<
< This is probably best done by combining pg_dump and pg_dumpall
< into a single binary.
<
> o Add pg_dumpall custom format dumps?
612c605,606
< o Remove unnecessary abstractions in pg_dump source code
> o Remove unnecessary function pointer abstractions in pg_dump source
> code
< * %Remove CREATE CONSTRAINT TRIGGER
<
< This was used in older releases to dump referential integrity
< constraints.
<
682a672,675
> This is particularly important for references to temporary tables
> in PL/PgSQL because PL/PgSQL caches query plans. The only workaround
> in PL/PgSQL is to use EXECUTE.
>
748c741
< * Fetch heap pages matching index entries in sequential order
> * -Fetch heap pages matching index entries in sequential order
797c790
< Currently no only one hash bucket can be stored on a page. Ideally
> Currently only one hash bucket can be stored on a page. Ideally
806a800,802
> o Add WAL logging for crash recovery
> o Allow multi-column hash indexes
>
812a809,812
>
> Ideally this requires a separate test program that can be run
> at initdb time or optionally later.
>
867c867
< * Improve the background writer
> * -Improve the background writer
< For large table adjustements during vacuum, it is faster to reindex
< rather than update the index.
> For large table adjustements during VACUUM FULL, it is faster to
> reindex rather than update the index.
< * Reduce lock time by moving tuples with read lock, then write
< lock and truncate table
> * Reduce lock time during VACUUM FULL by moving tuples with read lock,
> then write lock and truncate table
919c919,920
< o %Suggest VACUUM FULL if a table is nearly empty
> o %Issue log message to suggest VACUUM FULL if a table is nearly
> empty?
995d995
< * Add WAL index reliability improvement to non-btree indexes
1045c1045
< * ANALYZE should record a pg_statistic entry for an all-NULL column
> * -ANALYZE should record a pg_statistic entry for an all-NULL column
1047a1048,1051
> * Allow constraint_elimination to be automatically performed
>
> This requires additional code to reduce the performance loss caused by
> constraint elimination.
1090c1094
< * Remove memory/file descriptor freeing before ereport(ERROR)
> * %Remove memory/file descriptor freeing before ereport(ERROR)
< * Promote debug_query_string into a server-side function current_query()
< * Allow the identifier length to be increased via a configure option
> * %Promote debug_query_string into a server-side function current_query()
> * %Allow the identifier length to be increased via a configure option
1113d1116
< * Fix cross-compiling of time zone database via 'zic'
1130c1133
< o Improve dlerror() reporting string
> o -Improve dlerror() reporting string
1132c1135
< o Add support for Unicode
> o %Add support for Unicode
2005-08-27 02:52:44 +08:00
|
|
|
o Add ALTER DOMAIN to modify the underlying data type
|
2006-02-13 03:13:19 +08:00
|
|
|
o %Allow ALTER TABLE ... ALTER CONSTRAINT ... RENAME
|
2006-06-08 11:17:11 +08:00
|
|
|
|
2006-06-09 00:07:23 +08:00
|
|
|
http://archives.postgresql.org/pgsql-patches/2006-02/msg00168.php
|
2006-06-08 11:17:11 +08:00
|
|
|
|
2005-08-24 22:05:37 +08:00
|
|
|
o %Allow ALTER TABLE to change constraint deferrability and actions
|
Great TODO updates from Tom:
< Currently SIGTERM of a backend can lead to lock table corruption.
> Lock table corruption following SIGTERM of an individual backend
> has been reported in 8.0. A possible cause was fixed in 8.1, but
> it is unknown whether other problems exist. This item mostly
> requires additional testing rather than of writing any new code.
< o Allow postgresql.conf values to be set so they can not be changed
< by the user
166c167,171
< * %Remove Money type, add money formatting for decimal type
> * Improve the MONEY data type
>
> Change the MONEY data type to use DECIMAL internally, with special
> locale-aware output formatting.
>
225c230
< o %Allow MIN()/MAX() on arrays
> o -Allow MIN()/MAX() on arrays
228c233
< o Modify array literal representation to handle array index lower bound
> o -Modify array literal representation to handle array index lower bound
235a241
> o Auto-delete large objects when referencing row is deleted
< Currently large objects entries do not have owners. Permissions can
< only be set at the pg_largeobject table level.
> /contrib/lo offers this functionality.
240d244
< o Auto-delete large objects when referencing row is deleted
< * %Have views on temporary tables exist in the temporary namespace
< * Allow temporary views on non-temporary tables
< * %Allow RULE recompilation
> * -Have views on temporary tables exist in the temporary namespace
> * -Allow temporary views on non-temporary tables
> * Allow VIEW/RULE recompilation when the underlying tables change
340a345,347
>
> This is like DELETE CASCADE, but truncates.
>
381c388
< * Make row-wise comparisons work per SQL spec
> * %Make row-wise comparisons work per SQL spec
< o Currently the system uses the operating system COPY command to
< create a new database. Add ON COMMIT capability to CREATE TABLE AS
< SELECT
> o Add ON COMMIT capability to CREATE TABLE AS ... SELECT
427c432
< o %Add ALTER DOMAIN TYPE
> o Add ALTER DOMAIN to modify the underlying data type
< o %Disallow dropping of an inherited constraint
< o -Allow objects to be moved to different schemas
> o Add missing object types for ALTER ... SET SCHEMA
< o %Prevent child tables from altering constraints like CHECK that were
< inherited from the parent table
> o %Disallow dropping of an inherited constraint
> o %Prevent child tables from altering or dropping constraints
> like CHECK that were inherited from the parent table
< o Handle references to temporary tables that are created, destroyed,
< then recreated during a session, and EXECUTE is not used
<
< This requires the cached PL/PgSQL byte code to be invalidated when
< an object referenced in the function is changed.
<
< o Add table function support to pltcl, plperl, plpython?
< o Allow PL/pgSQL to name columns by ordinal position, e.g. rec.(3)
> o Add table function support to pltcl, plpython
549a548
> o Allow function argument names to be queries from PL/PgSQL
< o Pass arrays natively instead of as text between plperl and postgres
< o Add support for polymorphic arguments and return types to plperl
> o -Pass arrays natively instead of as text between plperl and postgres
> o Add support for polymorphic arguments and return types to
> languages other than PL/PgSQL
> o Add support for OUT and INOUT parameters to languages other
> than PL/PgSQL
< * Allow libpq to access SQLSTATE so pg_ctl can test for connection failure
<
< This would be used for checking if the server is up.
<
565c563
< * Have initdb set DateStyle based on locale?
> * Have initdb set the input DateStyle (MDY or DMY) based on locale?
567d564
< * Add a schema option to createlang
< o Add pg_dumpall custom format dumps.
<
< This is probably best done by combining pg_dump and pg_dumpall
< into a single binary.
<
> o Add pg_dumpall custom format dumps?
612c605,606
< o Remove unnecessary abstractions in pg_dump source code
> o Remove unnecessary function pointer abstractions in pg_dump source
> code
< * %Remove CREATE CONSTRAINT TRIGGER
<
< This was used in older releases to dump referential integrity
< constraints.
<
682a672,675
> This is particularly important for references to temporary tables
> in PL/PgSQL because PL/PgSQL caches query plans. The only workaround
> in PL/PgSQL is to use EXECUTE.
>
748c741
< * Fetch heap pages matching index entries in sequential order
> * -Fetch heap pages matching index entries in sequential order
797c790
< Currently no only one hash bucket can be stored on a page. Ideally
> Currently only one hash bucket can be stored on a page. Ideally
806a800,802
> o Add WAL logging for crash recovery
> o Allow multi-column hash indexes
>
812a809,812
>
> Ideally this requires a separate test program that can be run
> at initdb time or optionally later.
>
867c867
< * Improve the background writer
> * -Improve the background writer
< For large table adjustements during vacuum, it is faster to reindex
< rather than update the index.
> For large table adjustements during VACUUM FULL, it is faster to
> reindex rather than update the index.
< * Reduce lock time by moving tuples with read lock, then write
< lock and truncate table
> * Reduce lock time during VACUUM FULL by moving tuples with read lock,
> then write lock and truncate table
919c919,920
< o %Suggest VACUUM FULL if a table is nearly empty
> o %Issue log message to suggest VACUUM FULL if a table is nearly
> empty?
995d995
< * Add WAL index reliability improvement to non-btree indexes
1045c1045
< * ANALYZE should record a pg_statistic entry for an all-NULL column
> * -ANALYZE should record a pg_statistic entry for an all-NULL column
1047a1048,1051
> * Allow constraint_elimination to be automatically performed
>
> This requires additional code to reduce the performance loss caused by
> constraint elimination.
1090c1094
< * Remove memory/file descriptor freeing before ereport(ERROR)
> * %Remove memory/file descriptor freeing before ereport(ERROR)
< * Promote debug_query_string into a server-side function current_query()
< * Allow the identifier length to be increased via a configure option
> * %Promote debug_query_string into a server-side function current_query()
> * %Allow the identifier length to be increased via a configure option
1113d1116
< * Fix cross-compiling of time zone database via 'zic'
1130c1133
< o Improve dlerror() reporting string
> o -Improve dlerror() reporting string
1132c1135
< o Add support for Unicode
> o %Add support for Unicode
2005-08-27 02:52:44 +08:00
|
|
|
o Add missing object types for ALTER ... SET SCHEMA
|
2004-08-01 13:15:58 +08:00
|
|
|
o Allow ALTER TABLESPACE to move to different directories
|
2005-06-09 11:00:43 +08:00
|
|
|
o Allow databases to be moved to different tablespaces
|
2004-08-01 13:15:58 +08:00
|
|
|
o Allow moving system tables to other tablespaces, where possible
|
|
|
|
|
|
Improve indentation of sublists:
< The proper solution to this will probably the use of a master/slave
< replication solution like Sloney and a connection pooling tool like
< pgpool.
> The proper solution to this will probably the use of a master/slave
> replication solution like Sloney and a connection pooling tool like
> pgpool.
114,116c114,116
< You can use any of the master/slave replication servers to use a
< standby server for data warehousing. To allow read/write queries to
< multiple servers, you need multi-master replication like pgcluster.
> You can use any of the master/slave replication servers to use a
> standby server for data warehousing. To allow read/write queries to
> multiple servers, you need multi-master replication like pgcluster.
166,167c166,167
< Currently large objects entries do not have owners. Permissions can
< only be set at the pg_largeobject table level.
> Currently large objects entries do not have owners. Permissions can
> only be set at the pg_largeobject table level.
173c173
< This requires the TOAST column to be stored EXTERNAL.
> This requires the TOAST column to be stored EXTERNAL.
359,360c359,360
< One complexity is whether moving a schema should move all existing
< schema objects or just define the location for future object creation.
> One complexity is whether moving a schema should move all existing
> schema objects or just define the location for future object creation.
364,365c364,365
< Currently non-global system tables must be in the default database
< schema. Global system tables can never be moved.
> Currently non-global system tables must be in the default database
> schema. Global system tables can never be moved.
371,375c371,375
< This might require some background daemon to maintain clustering
< during periods of low usage. It might also require tables to be only
< paritally filled for easier reorganization. Another idea would
< be to create a merged heap/index data file so an index lookup would
< automatically access the heap data too.
> This might require some background daemon to maintain clustering
> during periods of low usage. It might also require tables to be only
> paritally filled for easier reorganization. Another idea would
> be to create a merged heap/index data file so an index lookup would
> automatically access the heap data too.
379,380c379,380
< To do this, determine the ideal cluster index for each system
< table and set the cluster setting during initdb.
> To do this, determine the ideal cluster index for each system
> table and set the cluster setting during initdb.
385,386c385,386
< This requires the use of a savepoint before each COPY line is
< processed, with ROLLBACK on COPY failure.
> This requires the use of a savepoint before each COPY line is
> processed, with ROLLBACK on COPY failure.
395,398c395,398
< This requires using the row ctid to map cursor rows back to the
< original heap row. This become more complicated if WITH HOLD cursors
< are to be supported because WITH HOLD cursors have a copy of the row
< and no FOR UPDATE lock.
> This requires using the row ctid to map cursor rows back to the
> original heap row. This become more complicated if WITH HOLD cursors
> are to be supported because WITH HOLD cursors have a copy of the row
> and no FOR UPDATE lock.
405,406c405,406
< Because WITH HOLD cursors exist outside transactions, this allows
< them to be listed so they can be closed.
> Because WITH HOLD cursors exist outside transactions, this allows
> them to be listed so they can be closed.
413,415c413,415
< This is useful for returning the auto-generated key for an INSERT.
< One complication is how to handle rules that run as part of
< the insert.
> This is useful for returning the auto-generated key for an INSERT.
> One complication is how to handle rules that run as part of
> the insert.
422c422
< This is basically the same as SET search_path.
> This is basically the same as SET search_path.
426,427c426,427
< This requires a checking function to be called after the server
< configuration file is read.
> This requires a checking function to be called after the server
> configuration file is read.
432c432
< Currently only constants are supported.
> Currently only constants are supported.
438,439c438,439
< This requires the cached PL/PgSQL byte code to be invalidated when
< an object referenced in the function is changed.
> This requires the cached PL/PgSQL byte code to be invalidated when
> an object referenced in the function is changed.
512,513c512,513
< Document differences between ecpg and the SQL standard and
< information about the Informix-compatibility module.
> Document differences between ecpg and the SQL standard and
> information about the Informix-compatibility module.
2004-10-19 00:13:43 +08:00
|
|
|
Currently non-global system tables must be in the default database
|
2005-06-09 11:00:43 +08:00
|
|
|
tablespace. Global system tables can never be moved.
|
2004-08-01 13:15:58 +08:00
|
|
|
|
2008-05-10 08:25:08 +08:00
|
|
|
o -Prevent parent tables from altering or dropping constraints
|
2006-04-25 10:58:34 +08:00
|
|
|
like CHECK that are inherited by child tables unless CASCADE
|
|
|
|
|
is used
|
2008-05-10 08:25:08 +08:00
|
|
|
o -Prevent child tables from altering or dropping constraints
|
2008-08-19 11:08:56 +08:00
|
|
|
like CHECK that were inherited from the parent table
|
2005-10-27 22:07:29 +08:00
|
|
|
o Have ALTER INDEX update the name of a constraint using that index
|
2005-10-27 22:16:05 +08:00
|
|
|
o Add ALTER TABLE RENAME CONSTRAINT, update index name also
|
2007-02-02 13:42:56 +08:00
|
|
|
o Allow column display reordering by recording a display,
|
|
|
|
|
storage, and permanent id for every column?
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-12/msg00782.php
|
|
|
|
|
|
2008-08-20 03:19:53 +08:00
|
|
|
o Allow an existing index to be marked as a table's primary key
|
2005-05-31 05:12:23 +08:00
|
|
|
|
2008-05-10 09:50:51 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-04/msg00500.php
|
|
|
|
|
|
2002-01-23 05:55:06 +08:00
|
|
|
|
2001-01-12 05:07:07 +08:00
|
|
|
* CLUSTER
|
2005-07-05 01:43:42 +08:00
|
|
|
|
2002-01-23 05:55:06 +08:00
|
|
|
o Automatically maintain clustering on a table
|
2004-08-01 13:15:58 +08:00
|
|
|
|
Improve indentation of sublists:
< The proper solution to this will probably the use of a master/slave
< replication solution like Sloney and a connection pooling tool like
< pgpool.
> The proper solution to this will probably the use of a master/slave
> replication solution like Sloney and a connection pooling tool like
> pgpool.
114,116c114,116
< You can use any of the master/slave replication servers to use a
< standby server for data warehousing. To allow read/write queries to
< multiple servers, you need multi-master replication like pgcluster.
> You can use any of the master/slave replication servers to use a
> standby server for data warehousing. To allow read/write queries to
> multiple servers, you need multi-master replication like pgcluster.
166,167c166,167
< Currently large objects entries do not have owners. Permissions can
< only be set at the pg_largeobject table level.
> Currently large objects entries do not have owners. Permissions can
> only be set at the pg_largeobject table level.
173c173
< This requires the TOAST column to be stored EXTERNAL.
> This requires the TOAST column to be stored EXTERNAL.
359,360c359,360
< One complexity is whether moving a schema should move all existing
< schema objects or just define the location for future object creation.
> One complexity is whether moving a schema should move all existing
> schema objects or just define the location for future object creation.
364,365c364,365
< Currently non-global system tables must be in the default database
< schema. Global system tables can never be moved.
> Currently non-global system tables must be in the default database
> schema. Global system tables can never be moved.
371,375c371,375
< This might require some background daemon to maintain clustering
< during periods of low usage. It might also require tables to be only
< paritally filled for easier reorganization. Another idea would
< be to create a merged heap/index data file so an index lookup would
< automatically access the heap data too.
> This might require some background daemon to maintain clustering
> during periods of low usage. It might also require tables to be only
> paritally filled for easier reorganization. Another idea would
> be to create a merged heap/index data file so an index lookup would
> automatically access the heap data too.
379,380c379,380
< To do this, determine the ideal cluster index for each system
< table and set the cluster setting during initdb.
> To do this, determine the ideal cluster index for each system
> table and set the cluster setting during initdb.
385,386c385,386
< This requires the use of a savepoint before each COPY line is
< processed, with ROLLBACK on COPY failure.
> This requires the use of a savepoint before each COPY line is
> processed, with ROLLBACK on COPY failure.
395,398c395,398
< This requires using the row ctid to map cursor rows back to the
< original heap row. This become more complicated if WITH HOLD cursors
< are to be supported because WITH HOLD cursors have a copy of the row
< and no FOR UPDATE lock.
> This requires using the row ctid to map cursor rows back to the
> original heap row. This become more complicated if WITH HOLD cursors
> are to be supported because WITH HOLD cursors have a copy of the row
> and no FOR UPDATE lock.
405,406c405,406
< Because WITH HOLD cursors exist outside transactions, this allows
< them to be listed so they can be closed.
> Because WITH HOLD cursors exist outside transactions, this allows
> them to be listed so they can be closed.
413,415c413,415
< This is useful for returning the auto-generated key for an INSERT.
< One complication is how to handle rules that run as part of
< the insert.
> This is useful for returning the auto-generated key for an INSERT.
> One complication is how to handle rules that run as part of
> the insert.
422c422
< This is basically the same as SET search_path.
> This is basically the same as SET search_path.
426,427c426,427
< This requires a checking function to be called after the server
< configuration file is read.
> This requires a checking function to be called after the server
> configuration file is read.
432c432
< Currently only constants are supported.
> Currently only constants are supported.
438,439c438,439
< This requires the cached PL/PgSQL byte code to be invalidated when
< an object referenced in the function is changed.
> This requires the cached PL/PgSQL byte code to be invalidated when
> an object referenced in the function is changed.
512,513c512,513
< Document differences between ecpg and the SQL standard and
< information about the Informix-compatibility module.
> Document differences between ecpg and the SQL standard and
> information about the Informix-compatibility module.
2004-10-19 00:13:43 +08:00
|
|
|
This might require some background daemon to maintain clustering
|
|
|
|
|
during periods of low usage. It might also require tables to be only
|
2005-12-17 02:44:07 +08:00
|
|
|
partially filled for easier reorganization. Another idea would
|
2008-08-19 11:08:56 +08:00
|
|
|
be to create a merged heap/index data file so an index lookup would
|
2004-11-04 03:28:11 +08:00
|
|
|
automatically access the heap data too. A third idea would be to
|
2004-11-04 03:38:20 +08:00
|
|
|
store heap rows in hashed groups, perhaps using a user-supplied
|
|
|
|
|
hash function.
|
2006-08-10 00:42:19 +08:00
|
|
|
http://archives.postgresql.org/pgsql-performance/2004-08/msg00349.php
|
2004-08-01 13:15:58 +08:00
|
|
|
|
2005-08-24 22:05:37 +08:00
|
|
|
o %Add default clustering to system tables
|
2002-01-23 05:55:06 +08:00
|
|
|
|
Improve indentation of sublists:
< The proper solution to this will probably the use of a master/slave
< replication solution like Sloney and a connection pooling tool like
< pgpool.
> The proper solution to this will probably the use of a master/slave
> replication solution like Sloney and a connection pooling tool like
> pgpool.
114,116c114,116
< You can use any of the master/slave replication servers to use a
< standby server for data warehousing. To allow read/write queries to
< multiple servers, you need multi-master replication like pgcluster.
> You can use any of the master/slave replication servers to use a
> standby server for data warehousing. To allow read/write queries to
> multiple servers, you need multi-master replication like pgcluster.
166,167c166,167
< Currently large objects entries do not have owners. Permissions can
< only be set at the pg_largeobject table level.
> Currently large objects entries do not have owners. Permissions can
> only be set at the pg_largeobject table level.
173c173
< This requires the TOAST column to be stored EXTERNAL.
> This requires the TOAST column to be stored EXTERNAL.
359,360c359,360
< One complexity is whether moving a schema should move all existing
< schema objects or just define the location for future object creation.
> One complexity is whether moving a schema should move all existing
> schema objects or just define the location for future object creation.
364,365c364,365
< Currently non-global system tables must be in the default database
< schema. Global system tables can never be moved.
> Currently non-global system tables must be in the default database
> schema. Global system tables can never be moved.
371,375c371,375
< This might require some background daemon to maintain clustering
< during periods of low usage. It might also require tables to be only
< paritally filled for easier reorganization. Another idea would
< be to create a merged heap/index data file so an index lookup would
< automatically access the heap data too.
> This might require some background daemon to maintain clustering
> during periods of low usage. It might also require tables to be only
> paritally filled for easier reorganization. Another idea would
> be to create a merged heap/index data file so an index lookup would
> automatically access the heap data too.
379,380c379,380
< To do this, determine the ideal cluster index for each system
< table and set the cluster setting during initdb.
> To do this, determine the ideal cluster index for each system
> table and set the cluster setting during initdb.
385,386c385,386
< This requires the use of a savepoint before each COPY line is
< processed, with ROLLBACK on COPY failure.
> This requires the use of a savepoint before each COPY line is
> processed, with ROLLBACK on COPY failure.
395,398c395,398
< This requires using the row ctid to map cursor rows back to the
< original heap row. This become more complicated if WITH HOLD cursors
< are to be supported because WITH HOLD cursors have a copy of the row
< and no FOR UPDATE lock.
> This requires using the row ctid to map cursor rows back to the
> original heap row. This become more complicated if WITH HOLD cursors
> are to be supported because WITH HOLD cursors have a copy of the row
> and no FOR UPDATE lock.
405,406c405,406
< Because WITH HOLD cursors exist outside transactions, this allows
< them to be listed so they can be closed.
> Because WITH HOLD cursors exist outside transactions, this allows
> them to be listed so they can be closed.
413,415c413,415
< This is useful for returning the auto-generated key for an INSERT.
< One complication is how to handle rules that run as part of
< the insert.
> This is useful for returning the auto-generated key for an INSERT.
> One complication is how to handle rules that run as part of
> the insert.
422c422
< This is basically the same as SET search_path.
> This is basically the same as SET search_path.
426,427c426,427
< This requires a checking function to be called after the server
< configuration file is read.
> This requires a checking function to be called after the server
> configuration file is read.
432c432
< Currently only constants are supported.
> Currently only constants are supported.
438,439c438,439
< This requires the cached PL/PgSQL byte code to be invalidated when
< an object referenced in the function is changed.
> This requires the cached PL/PgSQL byte code to be invalidated when
> an object referenced in the function is changed.
512,513c512,513
< Document differences between ecpg and the SQL standard and
< information about the Informix-compatibility module.
> Document differences between ecpg and the SQL standard and
> information about the Informix-compatibility module.
2004-10-19 00:13:43 +08:00
|
|
|
To do this, determine the ideal cluster index for each system
|
|
|
|
|
table and set the cluster setting during initdb.
|
2004-08-01 13:15:58 +08:00
|
|
|
|
2007-03-23 04:38:42 +08:00
|
|
|
o %Add VERBOSE option to report tables as they are processed,
|
|
|
|
|
like VACUUM VERBOSE
|
|
|
|
|
|
2004-11-11 12:36:55 +08:00
|
|
|
|
2001-05-11 04:26:45 +08:00
|
|
|
* COPY
|
2005-07-05 01:43:42 +08:00
|
|
|
|
2004-08-01 13:15:58 +08:00
|
|
|
o Allow COPY to report error lines and continue
|
2005-04-18 20:51:41 +08:00
|
|
|
|
Improve indentation of sublists:
< The proper solution to this will probably the use of a master/slave
< replication solution like Sloney and a connection pooling tool like
< pgpool.
> The proper solution to this will probably the use of a master/slave
> replication solution like Sloney and a connection pooling tool like
> pgpool.
114,116c114,116
< You can use any of the master/slave replication servers to use a
< standby server for data warehousing. To allow read/write queries to
< multiple servers, you need multi-master replication like pgcluster.
> You can use any of the master/slave replication servers to use a
> standby server for data warehousing. To allow read/write queries to
> multiple servers, you need multi-master replication like pgcluster.
166,167c166,167
< Currently large objects entries do not have owners. Permissions can
< only be set at the pg_largeobject table level.
> Currently large objects entries do not have owners. Permissions can
> only be set at the pg_largeobject table level.
173c173
< This requires the TOAST column to be stored EXTERNAL.
> This requires the TOAST column to be stored EXTERNAL.
359,360c359,360
< One complexity is whether moving a schema should move all existing
< schema objects or just define the location for future object creation.
> One complexity is whether moving a schema should move all existing
> schema objects or just define the location for future object creation.
364,365c364,365
< Currently non-global system tables must be in the default database
< schema. Global system tables can never be moved.
> Currently non-global system tables must be in the default database
> schema. Global system tables can never be moved.
371,375c371,375
< This might require some background daemon to maintain clustering
< during periods of low usage. It might also require tables to be only
< paritally filled for easier reorganization. Another idea would
< be to create a merged heap/index data file so an index lookup would
< automatically access the heap data too.
> This might require some background daemon to maintain clustering
> during periods of low usage. It might also require tables to be only
> paritally filled for easier reorganization. Another idea would
> be to create a merged heap/index data file so an index lookup would
> automatically access the heap data too.
379,380c379,380
< To do this, determine the ideal cluster index for each system
< table and set the cluster setting during initdb.
> To do this, determine the ideal cluster index for each system
> table and set the cluster setting during initdb.
385,386c385,386
< This requires the use of a savepoint before each COPY line is
< processed, with ROLLBACK on COPY failure.
> This requires the use of a savepoint before each COPY line is
> processed, with ROLLBACK on COPY failure.
395,398c395,398
< This requires using the row ctid to map cursor rows back to the
< original heap row. This become more complicated if WITH HOLD cursors
< are to be supported because WITH HOLD cursors have a copy of the row
< and no FOR UPDATE lock.
> This requires using the row ctid to map cursor rows back to the
> original heap row. This become more complicated if WITH HOLD cursors
> are to be supported because WITH HOLD cursors have a copy of the row
> and no FOR UPDATE lock.
405,406c405,406
< Because WITH HOLD cursors exist outside transactions, this allows
< them to be listed so they can be closed.
> Because WITH HOLD cursors exist outside transactions, this allows
> them to be listed so they can be closed.
413,415c413,415
< This is useful for returning the auto-generated key for an INSERT.
< One complication is how to handle rules that run as part of
< the insert.
> This is useful for returning the auto-generated key for an INSERT.
> One complication is how to handle rules that run as part of
> the insert.
422c422
< This is basically the same as SET search_path.
> This is basically the same as SET search_path.
426,427c426,427
< This requires a checking function to be called after the server
< configuration file is read.
> This requires a checking function to be called after the server
> configuration file is read.
432c432
< Currently only constants are supported.
> Currently only constants are supported.
438,439c438,439
< This requires the cached PL/PgSQL byte code to be invalidated when
< an object referenced in the function is changed.
> This requires the cached PL/PgSQL byte code to be invalidated when
> an object referenced in the function is changed.
512,513c512,513
< Document differences between ecpg and the SQL standard and
< information about the Informix-compatibility module.
> Document differences between ecpg and the SQL standard and
> information about the Informix-compatibility module.
2004-10-19 00:13:43 +08:00
|
|
|
This requires the use of a savepoint before each COPY line is
|
|
|
|
|
processed, with ROLLBACK on COPY failure.
|
2008-03-18 08:23:41 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-12/msg00572.php
|
2004-08-01 13:15:58 +08:00
|
|
|
|
2005-09-03 05:10:59 +08:00
|
|
|
o Allow COPY on a newly-created table to skip WAL logging
|
2004-11-30 11:53:00 +08:00
|
|
|
|
2005-09-03 05:10:59 +08:00
|
|
|
On crash recovery, the table involved in the COPY would
|
2005-09-17 00:46:09 +08:00
|
|
|
be removed or have its heap and index files truncated. One
|
2007-08-28 11:00:36 +08:00
|
|
|
issue is that no other backend should be able to add to
|
|
|
|
|
the table at the same time, which is something that is
|
Update TODO list based on 8.3 completed items:
< * Allow major upgrades without dump/reload, perhaps using pg_upgrade
< [pg_upgrade]
< * Check for unreferenced table files created by transactions that were
< in-progress when the server terminated abruptly
<
< http://archives.postgresql.org/pgsql-patches/2006-06/msg00096.php
<
> * Check for unreferenced table files created by transactions that were
> in-progress when the server terminated abruptly
>
> http://archives.postgresql.org/pgsql-patches/2006-06/msg00096.php
>
< * Support table partitioning that allows a single table to be stored
< in subtables that are partitioned based on the primary key or a WHERE
< clause
< creation of rules for INSERT/UPDATE/DELETE, and constraints for
< rapid partition selection. Options could include range and hash
> creation of triggers or rules for INSERT/UPDATE/DELETE, and constraints
> for rapid partition selection. Options could include range and hash
<
< * Improve replication solutions
<
< o Load balancing
<
< You can use any of the master/slave replication servers to use a
< standby server for data warehousing. To allow read/write queries to
< multiple servers, you need multi-master replication like pgcluster.
<
< o Allow replication over unreliable or non-persistent links
<
<
< o Mark change-on-restart-only values in postgresql.conf
< All objects in the default database tablespace must have default
< tablespace specifications. This is because new databases are
< created by copying directories. If you mix default tablespace
< tables and tablespace-specified tables in the same directory,
< creating a new database from such a mixed directory would create a
< new database with tables that had incorrect explicit tablespaces.
< To fix this would require modifying pg_class in the newly copied
< database, which we don't currently do.
> Currently all objects in the default database tablespace must
> have default tablespace specifications. This is because new
> databases are created by copying directories. If you mix default
> tablespace tables and tablespace-specified tables in the same
> directory, creating a new database from such a mixed directory
> would create a new database with tables that had incorrect
> explicit tablespaces. To fix this would require modifying
> pg_class in the newly copied database, which we don't currently
> do.
<
< o Allow recovery.conf to allow the same syntax as
> o Allow recovery.conf to support the same syntax as
< * Allow user-defined types to specify a type modifier at table creation
< time
< * Allow all data types to cast to and from TEXT
<
< http://archives.postgresql.org/pgsql-hackers/2007-04/msg00017.php
<
<
< o Add support for year-month syntax, INTERVAL '50-6' YEAR TO MONTH
< o Interpret INTERVAL '1 year' MONTH as CAST (INTERVAL '1 year' AS
< INTERVAL MONTH), and this should return '12 months'
> o Add support for year-month syntax, INTERVAL '50-6' YEAR
> TO MONTH
> o Interpret INTERVAL '1 year' MONTH as CAST (INTERVAL '1
> year' AS INTERVAL MONTH), and this should return '12 months'
< * Allow MONEY to be cast to/from other numeric data types
> * Allow MONEY to be easily cast to/from other numeric data types
>
< * Allow functions to have a schema search path specified at creation time
< * Fix cases where invalid byte encodings are accepted by the database,
< but throw an error on SELECT
<
< http://archives.postgresql.org/pgsql-hackers/2007-03/msg00767.php
< * Improve logging of prepared statements recovered during startup
> * Improve logging of prepared transactions recovered during startup
< * Make standard_conforming_strings the default in 8.4?
> * Make standard_conforming_strings the default in 8.5?
< * Allow the count returned by SELECT, etc to be to represent as an int64
> * Allow the count returned by SELECT, etc to be represented as an int64
< o Use more reliable method for CREATE DATABASE to get a consistent
< copy of db?
< o Fix transaction restriction checks for CREATE DATABASE and
< other commands
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00133.php
< currently allowed.
> currently allowed. This currently is done if the table is
> created inside the same transaction block as the COPY because
> no other backends can see the table.
< o Add SET PATH for schemas?
<
< This is basically the same as SET search_path.
< o Enforce referential integrity for system tables
< o Add Oracle-style packages (Pavel)
<
< A package would be a schema with session-local variables,
< public/private functions, and initialization functions. It
< is also possible to implement these capabilities
< in all schemas and not use a separate "packages"
< syntax at all.
<
< http://archives.postgresql.org/pgsql-hackers/2006-08/msg00384.php
<
< o Add single-step debugging of functions
< o Allow RETURN to return row or record functions
<
< http://archives.postgresql.org/pgsql-patches/2005-11/msg00045.php
< http://archives.postgresql.org/pgsql-patches/2006-08/msg00397.php
< http://archives.postgresql.org/pgsql-hackers/2006-09/msg00388.php
<
< o Fix problems with RETURN NEXT on tables with
< dropped/added columns after function creation
<
< http://archives.postgresql.org/pgsql-patches/2006-02/msg00165.php
<
< * Make consistent use of long/short command options --- pg_ctl needs
< long ones, pg_config doesn't have short ones, postgres doesn't have
< enough long ones, etc.
<
<
<
< o Consider parsing the -c string into individual queries so each
< is run in its own transaction
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00291.php
<
<
< o Remove unnecessary function pointer abstractions in pg_dump source
< code
> o Remove unnecessary function pointer abstractions in pg_dump source
> code
<
<
< o Fix SSL retry to avoid useless repeated connection attempts and
< ensuing misleading error messages
>
<
< This is difficult because it requires datatype-specific knowledge.
<
< * Improve commit_delay handling to reduce fsync()
< * %Add an option to sync() before fsync()'ing checkpoint files
>
< * Reduce lock time during VACUUM FULL by moving tuples with read lock,
< then write lock and truncate table
<
< Moved tuples are invisible to other backends so they don't require a
< write lock. However, the read lock promotion to write lock could lead
< to deadlock situations.
<
< * Prevent long-lived temporary tables from causing frozen-xid advancement
< starvation
<
< The problem is that autovacuum cannot vacuum them to set frozen xids;
< only the session that created them can do that.
<
<
<
< o Use free-space map information to guide refilling
< o Consider logging activity either to the logs or a system view
> The problem is that autovacuum cannot vacuum them to set frozen xids;
> only the session that created them can do that.
< * Add connection pooling
<
< It is unclear if this should be done inside the backend code or done
< by something external like pgpool. The passing of file descriptors to
< existing backends is one of the difficulties with a backend approach.
<
< * Consider reducing memory used for shared buffer reference count
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00752.php
<
< * %Remove memory/file descriptor freeing before ereport(ERROR)
< * %Promote debug_query_string into a server-side function current_query()
< * Allow ecpg to work with MSVC and BCC
< * Add xpath_array() to /contrib/xml2 to return results as an array
< * Allow building in directories containing spaces
<
< This is probably not possible because 'gmake' and other compiler tools
< do not fully support quoting of paths with spaces.
<
< * Fix sgmltools so PDFs can be generated with bookmarks
< * Split out libpq pgpass and environment documentation sections to make
< it easier for non-developers to find
< * Use strlcpy() rather than our StrNCpy() macro
<
< http://archives.postgresql.org/pgsql-hackers/2006-09/msg02108.php
<
< o Re-enable timezone output on log_line_prefix '%t' when a
< shorter timezone string is available
< * Allow statements across databases or servers with transaction
< semantics
<
< This can be done using dblink and two-phase commit.
> * Add Oracle-style packages (Pavel)
< * Add the features of packages
> A package would be a schema with session-local variables,
> public/private functions, and initialization functions. It
> is also possible to implement these capabilities
> in any schema and not use a separate "packages"
> syntax at all.
< o Make private objects accessible only to objects in the same schema
< o Allow current_schema.objname to access current schema objects
< o Add session variables
< o Allow nested schemas
> http://archives.postgresql.org/pgsql-hackers/2006-08/msg00384.php
2007-12-30 11:22:53 +08:00
|
|
|
currently allowed. This currently is done if the table is
|
|
|
|
|
created inside the same transaction block as the COPY because
|
|
|
|
|
no other backends can see the table.
|
2004-11-11 12:36:55 +08:00
|
|
|
|
2008-03-04 05:00:35 +08:00
|
|
|
o Consider using a ring buffer for COPY FROM
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-patches/2008-02/msg00140.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-02/msg01080.php
|
|
|
|
|
|
2008-03-05 23:56:11 +08:00
|
|
|
o Allow COPY FROM to create index entries in bulk
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-02/msg00811.php
|
|
|
|
|
|
2008-03-12 07:17:05 +08:00
|
|
|
o Allow COPY in CSV mode to control whether a quoted zero-length
|
|
|
|
|
string is treated as NULL
|
2008-03-12 06:47:28 +08:00
|
|
|
|
2008-03-12 07:17:05 +08:00
|
|
|
Currently this is always treated as a zero-length string,
|
|
|
|
|
which generates an error when loading into an integer column
|
2008-03-12 06:47:28 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-07/msg00905.php
|
|
|
|
|
|
2008-04-25 01:32:44 +08:00
|
|
|
o Impove COPY performance
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-02/msg00954.php
|
|
|
|
|
|
2008-06-24 06:42:32 +08:00
|
|
|
o Allow COPY to report errors sooner
|
|
|
|
|
|
2008-08-19 11:08:56 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-04/msg01169.php
|
2008-06-24 06:42:32 +08:00
|
|
|
|
2008-03-05 23:56:11 +08:00
|
|
|
|
2005-09-23 00:01:59 +08:00
|
|
|
|
2005-07-05 01:00:32 +08:00
|
|
|
* GRANT/REVOKE
|
2005-07-05 01:43:42 +08:00
|
|
|
|
2005-07-05 01:00:32 +08:00
|
|
|
o Allow column-level privileges
|
2005-08-24 22:05:37 +08:00
|
|
|
o %Allow GRANT/REVOKE permissions to be applied to all schema objects
|
2005-08-01 22:05:03 +08:00
|
|
|
with one command
|
2005-07-05 01:00:32 +08:00
|
|
|
|
|
|
|
|
The proposed syntax is:
|
|
|
|
|
GRANT SELECT ON ALL TABLES IN public TO phpuser;
|
|
|
|
|
GRANT SELECT ON NEW TABLES IN public TO phpuser;
|
|
|
|
|
|
2006-06-10 02:41:57 +08:00
|
|
|
o Allow GRANT/REVOKE permissions to be inherited by objects based on
|
2005-07-05 01:00:32 +08:00
|
|
|
schema permissions
|
|
|
|
|
|
2006-06-10 02:41:57 +08:00
|
|
|
o Allow SERIAL sequences to inherit permissions from the base table?
|
2006-01-06 01:47:53 +08:00
|
|
|
|
2005-07-05 01:00:32 +08:00
|
|
|
|
2001-05-11 04:26:45 +08:00
|
|
|
* CURSOR
|
2005-07-05 01:43:42 +08:00
|
|
|
|
2004-08-01 13:15:58 +08:00
|
|
|
o Prevent DROP TABLE from dropping a row referenced by its own open
|
2005-07-05 01:00:32 +08:00
|
|
|
cursor?
|
2004-08-01 13:15:58 +08:00
|
|
|
|
2004-11-11 12:36:55 +08:00
|
|
|
|
2001-05-11 04:26:45 +08:00
|
|
|
* INSERT
|
2005-07-05 01:43:42 +08:00
|
|
|
|
2004-08-01 13:15:58 +08:00
|
|
|
o Allow INSERT/UPDATE of the system-generated oid value for a row
|
2006-08-02 21:29:54 +08:00
|
|
|
o In rules, allow VALUES() to contain a mixture of 'old' and 'new'
|
|
|
|
|
references
|
2002-01-23 05:55:06 +08:00
|
|
|
|
2004-11-11 12:36:55 +08:00
|
|
|
|
2001-05-11 04:26:45 +08:00
|
|
|
* SHOW/SET
|
2005-07-05 01:43:42 +08:00
|
|
|
|
2001-07-16 13:00:29 +08:00
|
|
|
o Add SET PERFORMANCE_TIPS option to suggest INDEX, VACUUM, VACUUM
|
2001-05-11 04:26:45 +08:00
|
|
|
ANALYZE, and CLUSTER
|
Cleaups:
< * Allow GRANT/REVOKE permissions to be given to all schema objects with one
> * Allow GRANT/REVOKE permissions to be applied to all schema objects with one
60c60
< specifications. This is because new databases are created by copying
> specifications. This is because new databases are created by copying
63c63
< directory would create a new database with tables that had incorrect
> directory would create a new database with tables that had incorrect
72c72
<
>
85c85
< By not showing commented-out variables, we discourage people from
> By not showing commented-out variables, we discourage people from
91c91
< * Allow point-in-time recovery to archive partially filled write-ahead
> * Allow point-in-time recovery to archive partially filled write-ahead
102c102
< Currently all schemas are owned by the super-user because they are
> Currently all schemas are owned by the super-user because they are
128c128
< * Allow INET subnet tests with non-constants to be indexed
> * Allow INET subnet tests using non-constants to be indexed
143,144c143,144
< * Allow to_char to print localized month names
< * Allow functions to have a search path specified at creation time
> * Allow to_char() to print localized month names
> * Allow functions to have a schema search path specified at creation time
146c146
< * Add GUC variable to allow output of interval values in ISO8601 format
> * Add a GUC variable to allow output of interval values in ISO8601 format
154,155c154,155
< * Prevent inet cast to cidr if the unmasked bits are not zero, or
< zero bits
> * Prevent INET cast to CIDR if the unmasked bits are not zero, or
> zero the bits
158c158
< o Allow nulls in arrays
> o Allow NULLs in arrays
160,161c160,161
< o Delay resolution of array expression type so assignment coercion
< can be performed on empty array expressions
> o Delay resolution of array expression's data type so assignment
> coercion can be performed on empty array expressions
218,219c218,219
< key, foreign key [inheritance]
< * UNIQUE INDEX on base column not honored on inserts/updates from
> key, foreign key
> * UNIQUE INDEX on base column not honored on INSERTs/UPDATEs from
221c221
< (dup) should fail [inheritance]
> (dup) should fail
246c246
< * Fetch heap pages matching index entries in sequential order [performance]
> * Fetch heap pages matching index entries in sequential order
307c307
< functionality in DELETE. It's been agreed that the keyword should
> functionality in DELETE. It's been agreed that the keyword should
318c318
< * Allow PREPARE to automatically determine parameter types based on the SQL
> * Allow PREPARE to automatically determine parameter types based on the SQL
340,342d339
< * Allow CREATE TABLE foo (f1 INT CHECK (f1 > 0) CHECK (f1 < 10)) to work
< by searching for non-conflicting constraint names, and prefix with
< table name?
347c344
< new database.
> a new database.
350,351d346
< * Ignore temporary tables from other sessions when processing
< inheritance?
354,355c349,351
< * Add a session mode to warn about non-standard SQL usage in queries
< * Add MERGE command that does UPDATE/DELETE, or on failure, INSERT (rules, triggers?)
> * Add a GUC variable to warn about non-standard SQL usage in queries
> * Add MERGE command that does UPDATE/DELETE, or on failure, INSERT (rules,
> triggers?)
357,359c353,356
< * Add NOVICE output level for helpful messages like automatic sequence/index creation
< * Add COMMENT ON for all cluster global objects (users, groups,
< databases and tablespaces)
> * Add NOVICE output level for helpful messages like automatic sequence/index
> creation
> * Add COMMENT ON for all cluster global objects (users, groups, databases
> and tablespaces)
363c360
< When enabled, this would allow errors in multi-statement transactions
> When enabled, this would allow errors in multi-statement transactions
417c414
< o Allow COPY to optionally include column headings as the first line
> o Allow COPY to optionally include column headings in the first line
450c447
<
>
462c459
< o Handle references to temporary tables that are created, destroyed,
> o Handle references to temporary tables that are created, destroyed,
464c461
<
>
469d465
< o Improve PL/PgSQL exception handling using savepoints
488c484
<
>
503d498
<
518c513
< o Add pg_dumpall custom format dumps.
> o Add pg_dumpall custom format dumps.
520c515
< This is probably best done by combining pg_dump and pg_dumpall
> This is probably best done by combining pg_dump and pg_dumpall
532d526
< o Improve error handling (?)
555c549
< Adding shared locks requires recording the table/rows numbers in a
> Adding shared locks requires recording the table/rows numbers in a
643c637
< Posix_fadvise() can control both sequential/random file caching and
> Posix_fadvise() can control both sequential/random file caching and
703c697
< from distributted.net, http://www1.distributed.net/source,
> from distributted.net, http://www1.distributed.net/source,
729c723
< * Add connection pooling [pool]
> * Add connection pooling
755d748
<
759c752
<
>
768c761
< so an abrupt operating system restart might lose a few seconds of
> so an abrupt operating system restart might lose a few seconds of
785c778
< * Add utility to compute accurate random_page_cost value
> * Create utility to compute accurate random_page_cost value
787,789d779
< * Allow sorting, temp files, temp tables to use multiple work directories
<
< This allows the I/O load to be spread across multiple disk drives.
795a786
>
808,809c799,800
<
< * Use mmap() rather than SYSV shared memory or to write WAL files (?) [mmap]
>
> * Use mmap() rather than SYSV shared memory or to write WAL files (?)
812,813c803,804
< portability issues. Anonymous mmap (or mmap to /dev/zero) is required
< to prevent I/O overhead.
> portability issues. Anonymous mmap (or mmap to /dev/zero) is required
> to prevent I/O overhead.
817,819c808,810
< Doing I/O to large tables would consume a lot of address space or
< require frequent mapping/unmapping. Extending the file also causes
< mapping problems that might require mapping only individual pages,
> Doing I/O to large tables would consume a lot of address space or
> require frequent mapping/unmapping. Extending the file also causes
> mapping problems that might require mapping only individual pages,
821c812
< way to _prevent_ I/O to disk from the dirty shared buffers so changes
> way to _prevent_ I/O to disk from the dirty shared buffers so changes
826c817
< tuple overhead
> per-tuple overhead
829,831c820,822
< This would involve using multiple threads or processes to do optimization,
< sorting, or execution of single query. The major advantage of such a
< feature would be to allow multiple CPUs to work together to process a
> This would involve using multiple threads or processes to do optimization,
> sorting, or execution of single query. The major advantage of such a
> feature would be to allow multiple CPUs to work together to process a
834c825
< * Research the use of larger pages sizes
> * Research the use of larger page sizes
842a834
> * Move some /contrib modules out to their own project sites
845d836
< * Improve access-permissions check on data directory in Cygwin (Tom)
847,848c838
< * Clarify use of 'application' and 'command' tags in SGML docs
< * Better document ability to build only certain interfaces (Marc)
> * Improve documentation to build only interfaces (Marc)
852,853d841
< * Research interaction of setitimer() and sleep() used by statement_timeout
< * Rename /scripts directory because they are all C programs now
856,857d843
< * Allow binaries to be statically linked so they are more easily relocated
< * Move some /contrib modules out to their own project sites
862c848
< o Remove per-backend parameter file and move into shared memory?
> o Remove per-backend parameter file and move into shared memory
877,878c863,864
< o Update clients to use data types, typmod, schema.table.column names of
< result sets using new query protocol
> o Update clients to use data types, typmod, schema.table.column names
> of result sets using new query protocol
900d885
< * Kris is Kris Jurka
910c895
< * Simon is Simon Riggs
> * Simon is Simon Riggs <simon@2ndquadrant.com>
913d897
< * Teodor is
2004-11-11 11:59:14 +08:00
|
|
|
|
2004-11-11 12:36:55 +08:00
|
|
|
|
2008-04-15 23:07:09 +08:00
|
|
|
* LISTEN/NOTIFY
|
|
|
|
|
|
|
|
|
|
o Allow LISTEN/NOTIFY to store info in memory rather than tables?
|
|
|
|
|
|
2008-08-19 11:08:56 +08:00
|
|
|
Currently LISTEN/NOTIFY information is stored in pg_listener.
|
2008-04-15 23:07:09 +08:00
|
|
|
Storing such information in memory would improve performance.
|
|
|
|
|
|
|
|
|
|
o Add optional textual message to NOTIFY
|
|
|
|
|
|
|
|
|
|
This would allow an informational message to be added to the notify
|
|
|
|
|
message, perhaps indicating the row modified or other custom
|
|
|
|
|
information.
|
|
|
|
|
|
|
|
|
|
o Allow multiple identical NOTIFY events to always be communicated
|
|
|
|
|
to the client, rather than sent as a single notification to the
|
|
|
|
|
listener
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-general/2008-01/msg00057.php
|
|
|
|
|
|
2008-04-15 23:08:59 +08:00
|
|
|
o Allow NOTIFY in rules involving conditionals
|
|
|
|
|
o Improve LISTEN concurrency
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-02/msg01106.php
|
|
|
|
|
|
2008-04-15 23:07:09 +08:00
|
|
|
|
2006-05-23 04:39:23 +08:00
|
|
|
|
2008-03-06 11:15:52 +08:00
|
|
|
Referential Integrity
|
|
|
|
|
=====================
|
2006-06-15 02:36:57 +08:00
|
|
|
|
2008-03-06 11:15:52 +08:00
|
|
|
* Add MATCH PARTIAL referential integrity
|
|
|
|
|
* Change foreign key constraint for array -> element to mean element
|
|
|
|
|
in array?
|
|
|
|
|
* Fix problem when cascading referential triggers make changes on
|
|
|
|
|
cascaded tables, seeing the tables in an intermediate state
|
2006-05-23 04:39:23 +08:00
|
|
|
|
2008-03-06 11:15:52 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2005-09/msg00174.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2005-09/msg00174.php
|
2006-08-29 07:21:46 +08:00
|
|
|
|
2008-03-06 11:15:52 +08:00
|
|
|
* Allow DEFERRABLE and end-of-statement UNIQUE constraints?
|
2007-07-17 08:07:54 +08:00
|
|
|
|
2008-03-06 11:15:52 +08:00
|
|
|
This would allow UPDATE tab SET col = col + 1 to work if col has
|
|
|
|
|
a unique index. Currently, uniqueness checks are done while the
|
|
|
|
|
command is being executed, rather than at the end of the statement
|
|
|
|
|
or transaction.
|
|
|
|
|
http://people.planetpostgresql.org/greg/index.php?/archives/2006/06/10.html
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-09/msg01458.php
|
2006-08-29 07:21:46 +08:00
|
|
|
|
2008-03-11 22:56:52 +08:00
|
|
|
* Optimize referential integrity checks
|
2008-03-08 03:18:59 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-performance/2005-10/msg00458.php
|
2008-03-11 22:56:52 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-04/msg00744.php
|
2006-05-23 04:39:23 +08:00
|
|
|
|
2008-03-07 01:19:38 +08:00
|
|
|
|
2008-03-06 11:15:52 +08:00
|
|
|
Server-Side Languages
|
|
|
|
|
=====================
|
2005-07-05 01:43:42 +08:00
|
|
|
|
2008-03-06 11:15:52 +08:00
|
|
|
* PL/pgSQL
|
|
|
|
|
o Fix RENAME to work on variables other than OLD/NEW
|
2007-01-31 12:23:47 +08:00
|
|
|
|
2008-03-06 11:15:52 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2002-03/msg00591.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-01/msg01615.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-01/msg01587.php
|
2007-01-31 12:23:47 +08:00
|
|
|
|
2008-03-06 11:15:52 +08:00
|
|
|
o Allow function parameters to be passed by name,
|
|
|
|
|
get_employee_salary(12345 AS emp_id, 2001 AS tax_year)
|
|
|
|
|
o Allow handling of %TYPE arrays, e.g. tab.col%TYPE[]
|
|
|
|
|
o Allow listing of record column names, and access to
|
|
|
|
|
record columns via variables, e.g. columns := r.(*),
|
|
|
|
|
tval2 := r.(colname)
|
Clarify dynamic pl/pgsql item and add URLs. Restructure server-side
section into PL/pgSQL and non-PL/pgSQL sections:
< o Fix PL/pgSQL RENAME to work on variables other than OLD/NEW
< o Allow function parameters to be passed by name,
< get_employee_salary(emp_id => 12345, tax_year => 2001)
< o Add Oracle-style packages
< o Add table function support to pltcl, plpython
< o Add capability to create and call PROCEDURES
< o Allow PL/pgSQL to handle %TYPE arrays, e.g. tab.col%TYPE[]
< o Allow function argument names to be statements from PL/PgSQL
< o Add MOVE to PL/pgSQL
< o Add support for polymorphic arguments and return types to
< languages other than PL/PgSQL
< o Add support for OUT and INOUT parameters to languages other
< than PL/PgSQL
< o Add single-step debugging of PL/PgSQL functions
< o Allow PL/PgSQL to support WITH HOLD cursors
< o Allow PL/PgSQL RETURN to return row or record functions
<
< http://archives.postgresql.org/pgsql-patches/2005-11/msg00045.php
> o PL/pgSQL
> o Fix RENAME to work on variables other than OLD/NEW
> o Allow function parameters to be passed by name,
> get_employee_salary(emp_id => 12345, tax_year => 2001)
> o Add Oracle-style packages
> o Allow handling of %TYPE arrays, e.g. tab.col%TYPE[]
> o Allow listing of record column names, and access to
> record columns via variables, e.g. columns := r.(*),
> tval2 := r.(colname)
>
> http://archives.postgresql.org/pgsql-patches/2005-07/msg00458.php
> http://archives.postgresql.org/pgsql-patches/2006-05/msg00302.php
> http://archives.postgresql.org/pgsql-patches/2006-06/msg00031.php
>
> o Add MOVE
> o Add single-step debugging of functions
> o Add support for WITH HOLD cursors
> o Allow PL/RETURN to return row or record functions
>
> http://archives.postgresql.org/pgsql-patches/2005-11/msg00045.php
>
>
> o Other
> o Add table function support to pltcl, plpython
> o Add support for polymorphic arguments and return types to
> languages other than PL/PgSQL
> o Add capability to create and call PROCEDURES
> o Add support for OUT and INOUT parameters to languages other
> than PL/PgSQL
2006-06-16 00:54:13 +08:00
|
|
|
|
2008-03-06 11:15:52 +08:00
|
|
|
http://archives.postgresql.org/pgsql-patches/2005-07/msg00458.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-patches/2006-05/msg00302.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-patches/2006-06/msg00031.php
|
Clarify dynamic pl/pgsql item and add URLs. Restructure server-side
section into PL/pgSQL and non-PL/pgSQL sections:
< o Fix PL/pgSQL RENAME to work on variables other than OLD/NEW
< o Allow function parameters to be passed by name,
< get_employee_salary(emp_id => 12345, tax_year => 2001)
< o Add Oracle-style packages
< o Add table function support to pltcl, plpython
< o Add capability to create and call PROCEDURES
< o Allow PL/pgSQL to handle %TYPE arrays, e.g. tab.col%TYPE[]
< o Allow function argument names to be statements from PL/PgSQL
< o Add MOVE to PL/pgSQL
< o Add support for polymorphic arguments and return types to
< languages other than PL/PgSQL
< o Add support for OUT and INOUT parameters to languages other
< than PL/PgSQL
< o Add single-step debugging of PL/PgSQL functions
< o Allow PL/PgSQL to support WITH HOLD cursors
< o Allow PL/PgSQL RETURN to return row or record functions
<
< http://archives.postgresql.org/pgsql-patches/2005-11/msg00045.php
> o PL/pgSQL
> o Fix RENAME to work on variables other than OLD/NEW
> o Allow function parameters to be passed by name,
> get_employee_salary(emp_id => 12345, tax_year => 2001)
> o Add Oracle-style packages
> o Allow handling of %TYPE arrays, e.g. tab.col%TYPE[]
> o Allow listing of record column names, and access to
> record columns via variables, e.g. columns := r.(*),
> tval2 := r.(colname)
>
> http://archives.postgresql.org/pgsql-patches/2005-07/msg00458.php
> http://archives.postgresql.org/pgsql-patches/2006-05/msg00302.php
> http://archives.postgresql.org/pgsql-patches/2006-06/msg00031.php
>
> o Add MOVE
> o Add single-step debugging of functions
> o Add support for WITH HOLD cursors
> o Allow PL/RETURN to return row or record functions
>
> http://archives.postgresql.org/pgsql-patches/2005-11/msg00045.php
>
>
> o Other
> o Add table function support to pltcl, plpython
> o Add support for polymorphic arguments and return types to
> languages other than PL/PgSQL
> o Add capability to create and call PROCEDURES
> o Add support for OUT and INOUT parameters to languages other
> than PL/PgSQL
2006-06-16 00:54:13 +08:00
|
|
|
|
2008-03-06 11:15:52 +08:00
|
|
|
o Add support for SCROLL cursors
|
|
|
|
|
o Add support for WITH HOLD cursors
|
|
|
|
|
o Allow row and record variables to be set to NULL constants,
|
|
|
|
|
and allow NULL tests on such variables
|
2007-02-17 09:35:41 +08:00
|
|
|
|
2008-03-06 11:15:52 +08:00
|
|
|
Because a row is not scalar, do not allow assignment
|
|
|
|
|
from NULL-valued scalars.
|
2007-07-17 08:07:54 +08:00
|
|
|
|
2008-03-06 11:15:52 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-10/msg00070.php
|
2007-02-17 09:35:41 +08:00
|
|
|
|
2008-03-12 01:20:47 +08:00
|
|
|
o Review handling of MOVE and FETCH
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-patches/2007-04/msg00527.php
|
|
|
|
|
|
2008-03-12 06:31:02 +08:00
|
|
|
o Improve logic of determining if an identifier is a a
|
|
|
|
|
variable or column name
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-07/msg00436.php
|
|
|
|
|
|
2008-03-26 10:39:46 +08:00
|
|
|
o Consider keeping seperate cached copies when search_path changes
|
2008-03-25 10:47:49 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-01/msg01009.php
|
|
|
|
|
|
2008-05-16 10:23:44 +08:00
|
|
|
o -Add CASE capability to language (already in SQL)
|
2008-03-28 11:29:49 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-01/msg00696.php
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2008-03-12 01:20:47 +08:00
|
|
|
|
2008-03-06 11:15:52 +08:00
|
|
|
* Other
|
|
|
|
|
o Add table function support to pltcl, plpythonu
|
|
|
|
|
o Add support for polymorphic arguments and return types to
|
|
|
|
|
languages other than PL/PgSQL
|
|
|
|
|
o Add capability to create and call PROCEDURES
|
|
|
|
|
o Add support for OUT and INOUT parameters to languages other
|
|
|
|
|
than PL/PgSQL
|
|
|
|
|
o Add PL/PythonU tracebacks
|
2006-06-17 02:11:03 +08:00
|
|
|
|
2008-03-06 11:15:52 +08:00
|
|
|
http://archives.postgresql.org/pgsql-patches/2006-02/msg00288.php
|
2002-08-14 10:51:13 +08:00
|
|
|
|
2008-03-06 11:15:52 +08:00
|
|
|
o Allow data to be passed in native language formats, rather
|
|
|
|
|
than only text
|
2007-04-03 05:10:53 +08:00
|
|
|
|
2008-03-06 11:15:52 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-05/msg00289.php
|
2007-04-03 05:10:53 +08:00
|
|
|
|
2008-04-07 10:14:14 +08:00
|
|
|
o Add ability to obfuscate function bodies
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-patches/2008-01/msg00125.php
|
|
|
|
|
|
2002-10-04 10:28:42 +08:00
|
|
|
|
2008-03-07 01:19:38 +08:00
|
|
|
|
2002-04-26 04:20:50 +08:00
|
|
|
Clients
|
|
|
|
|
=======
|
1999-07-07 04:41:22 +08:00
|
|
|
|
2005-07-05 01:43:42 +08:00
|
|
|
* Have pg_ctl look at PGHOST in case it is a socket directory?
|
|
|
|
|
* Allow pg_ctl to work properly with configuration files located outside
|
|
|
|
|
the PGDATA directory
|
2004-08-01 13:15:58 +08:00
|
|
|
|
2005-07-05 01:43:42 +08:00
|
|
|
pg_ctl can not read the pid file because it isn't located in the
|
|
|
|
|
config directory but in the PGDATA directory. The solution is to
|
|
|
|
|
allow pg_ctl to read and understand postgresql.conf to find the
|
|
|
|
|
data_directory value.
|
2004-08-01 13:15:58 +08:00
|
|
|
|
2008-03-08 04:38:59 +08:00
|
|
|
* Add a function like pg_get_indexdef() that report more detailed index
|
|
|
|
|
information
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-bugs/2007-12/msg00166.php
|
|
|
|
|
|
2005-07-05 01:43:42 +08:00
|
|
|
* psql
|
2008-07-15 11:17:51 +08:00
|
|
|
o -Have psql show current values for a sequence
|
2005-07-05 01:43:42 +08:00
|
|
|
o Move psql backslash database information into the backend, use
|
2008-04-19 20:16:21 +08:00
|
|
|
mnemonic commands?
|
2005-07-05 01:43:42 +08:00
|
|
|
|
|
|
|
|
This would allow non-psql clients to pull the same information out
|
|
|
|
|
of the database as psql.
|
2008-04-19 20:16:21 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2004-01/msg00191.php
|
2005-07-05 01:43:42 +08:00
|
|
|
|
2008-04-17 01:50:01 +08:00
|
|
|
o Make psql's \d commands more consistent
|
2006-04-23 00:06:44 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2004-11/msg00014.php
|
2006-04-23 02:17:57 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2004-11/msg00014.php
|
2006-04-23 00:06:44 +08:00
|
|
|
|
2005-07-05 01:43:42 +08:00
|
|
|
o Consistently display privilege information for all objects in psql
|
2005-10-26 02:50:56 +08:00
|
|
|
o Add auto-expanded mode so expanded output is used if the row
|
2007-08-28 11:00:36 +08:00
|
|
|
length is wider than the screen width.
|
2005-10-26 02:50:56 +08:00
|
|
|
|
|
|
|
|
Consider using auto-expanded mode for backslash commands like \df+.
|
|
|
|
|
|
2006-02-01 08:03:09 +08:00
|
|
|
o Prevent tab completion of SET TRANSACTION from querying the
|
|
|
|
|
database and therefore preventing the transaction isolation
|
|
|
|
|
level from being set.
|
|
|
|
|
|
2007-02-18 09:34:35 +08:00
|
|
|
Currently SET <tab> causes a database lookup to check all
|
2006-02-01 08:03:09 +08:00
|
|
|
supported session variables. This query causes problems
|
|
|
|
|
because setting the transaction isolation level must be the
|
|
|
|
|
first statement of a transaction.
|
|
|
|
|
|
2007-02-06 01:17:13 +08:00
|
|
|
o Add a \set variable to control whether \s displays line numbers
|
2007-02-04 09:50:59 +08:00
|
|
|
|
2007-02-06 01:17:13 +08:00
|
|
|
Another option is to add \# which lists line numbers, and
|
|
|
|
|
allows command execution.
|
2007-02-04 09:50:59 +08:00
|
|
|
|
2007-02-06 01:17:13 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-12/msg00255.php
|
2007-02-04 09:50:59 +08:00
|
|
|
|
2008-03-07 01:28:22 +08:00
|
|
|
o Prevent escape string warnings when object names have
|
|
|
|
|
backslashes
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-01/msg00227.php
|
|
|
|
|
|
2008-03-07 08:10:13 +08:00
|
|
|
o Have \d show foreign keys that reference a table's primary key
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-04/msg00424.php
|
|
|
|
|
|
|
|
|
|
o Have \d show child tables that inherit from the specified parent
|
2008-05-17 01:03:40 +08:00
|
|
|
o -Have \l+ show database size, if permissions allow
|
2008-03-07 23:56:40 +08:00
|
|
|
|
|
|
|
|
Ideally it will not generate an error for invalid permissions
|
|
|
|
|
|
2008-03-13 04:50:22 +08:00
|
|
|
o Include the symbolic SQLSTATE name in verbose error reports
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-general/2007-09/msg00438.php
|
2008-03-07 01:28:22 +08:00
|
|
|
|
2008-05-06 08:47:53 +08:00
|
|
|
o -Improve display of enums to show valid enum values
|
2008-04-24 08:39:50 +08:00
|
|
|
o Add prompt escape to display the client and server versions
|
2008-07-01 03:41:37 +08:00
|
|
|
o Add option to wrap column values at whitespace boundaries,
|
2008-08-19 11:08:56 +08:00
|
|
|
rather than chopping them at a fixed width.
|
2008-07-01 03:41:37 +08:00
|
|
|
|
|
|
|
|
Currently, "wrapped" format chops values into fixed
|
|
|
|
|
widths. Perhaps the word wrapping could use the same
|
|
|
|
|
algorithm documented in the W3C specification.
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-05/msg00404.php
|
|
|
|
|
http://www.w3.org/TR/CSS21/tables.html#auto-table-layout
|
2008-07-01 03:45:15 +08:00
|
|
|
o Add "auto" expanded mode that outputs in expanded format if
|
|
|
|
|
"wrapped" mode can't wrap the output to the screen width
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-05/msg00417.php
|
|
|
|
|
|
2005-07-05 01:00:32 +08:00
|
|
|
|
Add ideas for concurrent pg_dump and pg_restore:
< * pg_dump
> * pg_dump / pg_restore
> o Allow pg_dump to utilize multiple CPUs and I/O channels by dumping
> multiple objects simultaneously
>
> The difficulty with this is getting multiple dump processes to
> produce a single dump output file.
> http://archives.postgresql.org/pgsql-hackers/2008-02/msg00205.php
>
> o Allow pg_restore to utilize multiple CPUs and I/O channels by
> restoring multiple objects simultaneously
>
> This might require a pg_restore flag to indicate how many
> simultaneous operations should be performed. Only pg_dump's
> -Fc format has the necessary dependency information.
>
> o To better utilize resources, restore data, primary keys, and
> indexes for a single table before restoring the next table
>
> Hopefully this will allow the CPU-I/O load to be more uniform
> for simultaneous restores. The idea is to start data restores
> for several objects, and once the first object is done, to move
> on to its primary keys and indexes. Over time, simultaneous
> data loads and index builds will be running.
>
> o To better utilize resources, allow pg_restore to check foreign
> keys simultaneously, where possible
> o Allow pg_restore to create all indexes of a table
> concurrently, via a single heap scan
>
> This requires a pg_dump -Fc file because that format contains
> the required dependency information.
> http://archives.postgresql.org/pgsql-general/2007-05/msg01274.php
>
> o Allow pg_restore to load different parts of the COPY data
> simultaneously
< single heap scan, and have a restore of a pg_dump somehow use it
> single heap scan, and have pg_restore use it
< http://archives.postgresql.org/pgsql-general/2007-05/msg01274.php
2008-03-04 09:33:32 +08:00
|
|
|
* pg_dump / pg_restore
|
2005-10-12 21:41:08 +08:00
|
|
|
o %Add dumping of comments on index columns and composite type columns
|
2005-08-24 22:05:37 +08:00
|
|
|
o %Add full object name to the tag field. eg. for operators we need
|
2004-08-18 11:19:42 +08:00
|
|
|
'=(integer, integer)', instead of just '='.
|
Great TODO updates from Tom:
< Currently SIGTERM of a backend can lead to lock table corruption.
> Lock table corruption following SIGTERM of an individual backend
> has been reported in 8.0. A possible cause was fixed in 8.1, but
> it is unknown whether other problems exist. This item mostly
> requires additional testing rather than of writing any new code.
< o Allow postgresql.conf values to be set so they can not be changed
< by the user
166c167,171
< * %Remove Money type, add money formatting for decimal type
> * Improve the MONEY data type
>
> Change the MONEY data type to use DECIMAL internally, with special
> locale-aware output formatting.
>
225c230
< o %Allow MIN()/MAX() on arrays
> o -Allow MIN()/MAX() on arrays
228c233
< o Modify array literal representation to handle array index lower bound
> o -Modify array literal representation to handle array index lower bound
235a241
> o Auto-delete large objects when referencing row is deleted
< Currently large objects entries do not have owners. Permissions can
< only be set at the pg_largeobject table level.
> /contrib/lo offers this functionality.
240d244
< o Auto-delete large objects when referencing row is deleted
< * %Have views on temporary tables exist in the temporary namespace
< * Allow temporary views on non-temporary tables
< * %Allow RULE recompilation
> * -Have views on temporary tables exist in the temporary namespace
> * -Allow temporary views on non-temporary tables
> * Allow VIEW/RULE recompilation when the underlying tables change
340a345,347
>
> This is like DELETE CASCADE, but truncates.
>
381c388
< * Make row-wise comparisons work per SQL spec
> * %Make row-wise comparisons work per SQL spec
< o Currently the system uses the operating system COPY command to
< create a new database. Add ON COMMIT capability to CREATE TABLE AS
< SELECT
> o Add ON COMMIT capability to CREATE TABLE AS ... SELECT
427c432
< o %Add ALTER DOMAIN TYPE
> o Add ALTER DOMAIN to modify the underlying data type
< o %Disallow dropping of an inherited constraint
< o -Allow objects to be moved to different schemas
> o Add missing object types for ALTER ... SET SCHEMA
< o %Prevent child tables from altering constraints like CHECK that were
< inherited from the parent table
> o %Disallow dropping of an inherited constraint
> o %Prevent child tables from altering or dropping constraints
> like CHECK that were inherited from the parent table
< o Handle references to temporary tables that are created, destroyed,
< then recreated during a session, and EXECUTE is not used
<
< This requires the cached PL/PgSQL byte code to be invalidated when
< an object referenced in the function is changed.
<
< o Add table function support to pltcl, plperl, plpython?
< o Allow PL/pgSQL to name columns by ordinal position, e.g. rec.(3)
> o Add table function support to pltcl, plpython
549a548
> o Allow function argument names to be queries from PL/PgSQL
< o Pass arrays natively instead of as text between plperl and postgres
< o Add support for polymorphic arguments and return types to plperl
> o -Pass arrays natively instead of as text between plperl and postgres
> o Add support for polymorphic arguments and return types to
> languages other than PL/PgSQL
> o Add support for OUT and INOUT parameters to languages other
> than PL/PgSQL
< * Allow libpq to access SQLSTATE so pg_ctl can test for connection failure
<
< This would be used for checking if the server is up.
<
565c563
< * Have initdb set DateStyle based on locale?
> * Have initdb set the input DateStyle (MDY or DMY) based on locale?
567d564
< * Add a schema option to createlang
< o Add pg_dumpall custom format dumps.
<
< This is probably best done by combining pg_dump and pg_dumpall
< into a single binary.
<
> o Add pg_dumpall custom format dumps?
612c605,606
< o Remove unnecessary abstractions in pg_dump source code
> o Remove unnecessary function pointer abstractions in pg_dump source
> code
< * %Remove CREATE CONSTRAINT TRIGGER
<
< This was used in older releases to dump referential integrity
< constraints.
<
682a672,675
> This is particularly important for references to temporary tables
> in PL/PgSQL because PL/PgSQL caches query plans. The only workaround
> in PL/PgSQL is to use EXECUTE.
>
748c741
< * Fetch heap pages matching index entries in sequential order
> * -Fetch heap pages matching index entries in sequential order
797c790
< Currently no only one hash bucket can be stored on a page. Ideally
> Currently only one hash bucket can be stored on a page. Ideally
806a800,802
> o Add WAL logging for crash recovery
> o Allow multi-column hash indexes
>
812a809,812
>
> Ideally this requires a separate test program that can be run
> at initdb time or optionally later.
>
867c867
< * Improve the background writer
> * -Improve the background writer
< For large table adjustements during vacuum, it is faster to reindex
< rather than update the index.
> For large table adjustements during VACUUM FULL, it is faster to
> reindex rather than update the index.
< * Reduce lock time by moving tuples with read lock, then write
< lock and truncate table
> * Reduce lock time during VACUUM FULL by moving tuples with read lock,
> then write lock and truncate table
919c919,920
< o %Suggest VACUUM FULL if a table is nearly empty
> o %Issue log message to suggest VACUUM FULL if a table is nearly
> empty?
995d995
< * Add WAL index reliability improvement to non-btree indexes
1045c1045
< * ANALYZE should record a pg_statistic entry for an all-NULL column
> * -ANALYZE should record a pg_statistic entry for an all-NULL column
1047a1048,1051
> * Allow constraint_elimination to be automatically performed
>
> This requires additional code to reduce the performance loss caused by
> constraint elimination.
1090c1094
< * Remove memory/file descriptor freeing before ereport(ERROR)
> * %Remove memory/file descriptor freeing before ereport(ERROR)
< * Promote debug_query_string into a server-side function current_query()
< * Allow the identifier length to be increased via a configure option
> * %Promote debug_query_string into a server-side function current_query()
> * %Allow the identifier length to be increased via a configure option
1113d1116
< * Fix cross-compiling of time zone database via 'zic'
1130c1133
< o Improve dlerror() reporting string
> o -Improve dlerror() reporting string
1132c1135
< o Add support for Unicode
> o %Add support for Unicode
2005-08-27 02:52:44 +08:00
|
|
|
o Add pg_dumpall custom format dumps?
|
2005-10-12 07:55:10 +08:00
|
|
|
o Allow selection of individual object(s) of all types, not just
|
|
|
|
|
tables
|
2007-07-17 08:07:54 +08:00
|
|
|
o In a selective dump, allow dumping of an object and all its
|
2005-10-12 07:55:10 +08:00
|
|
|
dependencies
|
2005-10-12 10:57:42 +08:00
|
|
|
o Add options like pg_restore -l and -L to pg_dump
|
2005-10-12 21:41:08 +08:00
|
|
|
o Stop dumping CASCADE on DROP TYPE commands in clean mode
|
2005-10-12 21:39:21 +08:00
|
|
|
o Allow pg_dump --clean to drop roles that own objects or have
|
|
|
|
|
privileges
|
2007-11-20 08:18:46 +08:00
|
|
|
o Change pg_dump so that a comment on the dumped database is
|
|
|
|
|
applied to the loaded database, even if the database has a
|
|
|
|
|
different name. This will require new backend syntax, perhaps
|
|
|
|
|
COMMENT ON CURRENT DATABASE.
|
Update TODO list based on 8.3 completed items:
< * Allow major upgrades without dump/reload, perhaps using pg_upgrade
< [pg_upgrade]
< * Check for unreferenced table files created by transactions that were
< in-progress when the server terminated abruptly
<
< http://archives.postgresql.org/pgsql-patches/2006-06/msg00096.php
<
> * Check for unreferenced table files created by transactions that were
> in-progress when the server terminated abruptly
>
> http://archives.postgresql.org/pgsql-patches/2006-06/msg00096.php
>
< * Support table partitioning that allows a single table to be stored
< in subtables that are partitioned based on the primary key or a WHERE
< clause
< creation of rules for INSERT/UPDATE/DELETE, and constraints for
< rapid partition selection. Options could include range and hash
> creation of triggers or rules for INSERT/UPDATE/DELETE, and constraints
> for rapid partition selection. Options could include range and hash
<
< * Improve replication solutions
<
< o Load balancing
<
< You can use any of the master/slave replication servers to use a
< standby server for data warehousing. To allow read/write queries to
< multiple servers, you need multi-master replication like pgcluster.
<
< o Allow replication over unreliable or non-persistent links
<
<
< o Mark change-on-restart-only values in postgresql.conf
< All objects in the default database tablespace must have default
< tablespace specifications. This is because new databases are
< created by copying directories. If you mix default tablespace
< tables and tablespace-specified tables in the same directory,
< creating a new database from such a mixed directory would create a
< new database with tables that had incorrect explicit tablespaces.
< To fix this would require modifying pg_class in the newly copied
< database, which we don't currently do.
> Currently all objects in the default database tablespace must
> have default tablespace specifications. This is because new
> databases are created by copying directories. If you mix default
> tablespace tables and tablespace-specified tables in the same
> directory, creating a new database from such a mixed directory
> would create a new database with tables that had incorrect
> explicit tablespaces. To fix this would require modifying
> pg_class in the newly copied database, which we don't currently
> do.
<
< o Allow recovery.conf to allow the same syntax as
> o Allow recovery.conf to support the same syntax as
< * Allow user-defined types to specify a type modifier at table creation
< time
< * Allow all data types to cast to and from TEXT
<
< http://archives.postgresql.org/pgsql-hackers/2007-04/msg00017.php
<
<
< o Add support for year-month syntax, INTERVAL '50-6' YEAR TO MONTH
< o Interpret INTERVAL '1 year' MONTH as CAST (INTERVAL '1 year' AS
< INTERVAL MONTH), and this should return '12 months'
> o Add support for year-month syntax, INTERVAL '50-6' YEAR
> TO MONTH
> o Interpret INTERVAL '1 year' MONTH as CAST (INTERVAL '1
> year' AS INTERVAL MONTH), and this should return '12 months'
< * Allow MONEY to be cast to/from other numeric data types
> * Allow MONEY to be easily cast to/from other numeric data types
>
< * Allow functions to have a schema search path specified at creation time
< * Fix cases where invalid byte encodings are accepted by the database,
< but throw an error on SELECT
<
< http://archives.postgresql.org/pgsql-hackers/2007-03/msg00767.php
< * Improve logging of prepared statements recovered during startup
> * Improve logging of prepared transactions recovered during startup
< * Make standard_conforming_strings the default in 8.4?
> * Make standard_conforming_strings the default in 8.5?
< * Allow the count returned by SELECT, etc to be to represent as an int64
> * Allow the count returned by SELECT, etc to be represented as an int64
< o Use more reliable method for CREATE DATABASE to get a consistent
< copy of db?
< o Fix transaction restriction checks for CREATE DATABASE and
< other commands
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00133.php
< currently allowed.
> currently allowed. This currently is done if the table is
> created inside the same transaction block as the COPY because
> no other backends can see the table.
< o Add SET PATH for schemas?
<
< This is basically the same as SET search_path.
< o Enforce referential integrity for system tables
< o Add Oracle-style packages (Pavel)
<
< A package would be a schema with session-local variables,
< public/private functions, and initialization functions. It
< is also possible to implement these capabilities
< in all schemas and not use a separate "packages"
< syntax at all.
<
< http://archives.postgresql.org/pgsql-hackers/2006-08/msg00384.php
<
< o Add single-step debugging of functions
< o Allow RETURN to return row or record functions
<
< http://archives.postgresql.org/pgsql-patches/2005-11/msg00045.php
< http://archives.postgresql.org/pgsql-patches/2006-08/msg00397.php
< http://archives.postgresql.org/pgsql-hackers/2006-09/msg00388.php
<
< o Fix problems with RETURN NEXT on tables with
< dropped/added columns after function creation
<
< http://archives.postgresql.org/pgsql-patches/2006-02/msg00165.php
<
< * Make consistent use of long/short command options --- pg_ctl needs
< long ones, pg_config doesn't have short ones, postgres doesn't have
< enough long ones, etc.
<
<
<
< o Consider parsing the -c string into individual queries so each
< is run in its own transaction
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00291.php
<
<
< o Remove unnecessary function pointer abstractions in pg_dump source
< code
> o Remove unnecessary function pointer abstractions in pg_dump source
> code
<
<
< o Fix SSL retry to avoid useless repeated connection attempts and
< ensuing misleading error messages
>
<
< This is difficult because it requires datatype-specific knowledge.
<
< * Improve commit_delay handling to reduce fsync()
< * %Add an option to sync() before fsync()'ing checkpoint files
>
< * Reduce lock time during VACUUM FULL by moving tuples with read lock,
< then write lock and truncate table
<
< Moved tuples are invisible to other backends so they don't require a
< write lock. However, the read lock promotion to write lock could lead
< to deadlock situations.
<
< * Prevent long-lived temporary tables from causing frozen-xid advancement
< starvation
<
< The problem is that autovacuum cannot vacuum them to set frozen xids;
< only the session that created them can do that.
<
<
<
< o Use free-space map information to guide refilling
< o Consider logging activity either to the logs or a system view
> The problem is that autovacuum cannot vacuum them to set frozen xids;
> only the session that created them can do that.
< * Add connection pooling
<
< It is unclear if this should be done inside the backend code or done
< by something external like pgpool. The passing of file descriptors to
< existing backends is one of the difficulties with a backend approach.
<
< * Consider reducing memory used for shared buffer reference count
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00752.php
<
< * %Remove memory/file descriptor freeing before ereport(ERROR)
< * %Promote debug_query_string into a server-side function current_query()
< * Allow ecpg to work with MSVC and BCC
< * Add xpath_array() to /contrib/xml2 to return results as an array
< * Allow building in directories containing spaces
<
< This is probably not possible because 'gmake' and other compiler tools
< do not fully support quoting of paths with spaces.
<
< * Fix sgmltools so PDFs can be generated with bookmarks
< * Split out libpq pgpass and environment documentation sections to make
< it easier for non-developers to find
< * Use strlcpy() rather than our StrNCpy() macro
<
< http://archives.postgresql.org/pgsql-hackers/2006-09/msg02108.php
<
< o Re-enable timezone output on log_line_prefix '%t' when a
< shorter timezone string is available
< * Allow statements across databases or servers with transaction
< semantics
<
< This can be done using dblink and two-phase commit.
> * Add Oracle-style packages (Pavel)
< * Add the features of packages
> A package would be a schema with session-local variables,
> public/private functions, and initialization functions. It
> is also possible to implement these capabilities
> in any schema and not use a separate "packages"
> syntax at all.
< o Make private objects accessible only to objects in the same schema
< o Allow current_schema.objname to access current schema objects
< o Add session variables
< o Allow nested schemas
> http://archives.postgresql.org/pgsql-hackers/2006-08/msg00384.php
2007-12-30 11:22:53 +08:00
|
|
|
o Remove unnecessary function pointer abstractions in pg_dump source
|
|
|
|
|
code
|
Add ideas for concurrent pg_dump and pg_restore:
< * pg_dump
> * pg_dump / pg_restore
> o Allow pg_dump to utilize multiple CPUs and I/O channels by dumping
> multiple objects simultaneously
>
> The difficulty with this is getting multiple dump processes to
> produce a single dump output file.
> http://archives.postgresql.org/pgsql-hackers/2008-02/msg00205.php
>
> o Allow pg_restore to utilize multiple CPUs and I/O channels by
> restoring multiple objects simultaneously
>
> This might require a pg_restore flag to indicate how many
> simultaneous operations should be performed. Only pg_dump's
> -Fc format has the necessary dependency information.
>
> o To better utilize resources, restore data, primary keys, and
> indexes for a single table before restoring the next table
>
> Hopefully this will allow the CPU-I/O load to be more uniform
> for simultaneous restores. The idea is to start data restores
> for several objects, and once the first object is done, to move
> on to its primary keys and indexes. Over time, simultaneous
> data loads and index builds will be running.
>
> o To better utilize resources, allow pg_restore to check foreign
> keys simultaneously, where possible
> o Allow pg_restore to create all indexes of a table
> concurrently, via a single heap scan
>
> This requires a pg_dump -Fc file because that format contains
> the required dependency information.
> http://archives.postgresql.org/pgsql-general/2007-05/msg01274.php
>
> o Allow pg_restore to load different parts of the COPY data
> simultaneously
< single heap scan, and have a restore of a pg_dump somehow use it
> single heap scan, and have pg_restore use it
< http://archives.postgresql.org/pgsql-general/2007-05/msg01274.php
2008-03-04 09:33:32 +08:00
|
|
|
o Allow pg_dump to utilize multiple CPUs and I/O channels by dumping
|
|
|
|
|
multiple objects simultaneously
|
|
|
|
|
|
|
|
|
|
The difficulty with this is getting multiple dump processes to
|
2008-03-04 22:38:38 +08:00
|
|
|
produce a single dump output file. It also would require
|
|
|
|
|
several sessions to share the same snapshot.
|
Add ideas for concurrent pg_dump and pg_restore:
< * pg_dump
> * pg_dump / pg_restore
> o Allow pg_dump to utilize multiple CPUs and I/O channels by dumping
> multiple objects simultaneously
>
> The difficulty with this is getting multiple dump processes to
> produce a single dump output file.
> http://archives.postgresql.org/pgsql-hackers/2008-02/msg00205.php
>
> o Allow pg_restore to utilize multiple CPUs and I/O channels by
> restoring multiple objects simultaneously
>
> This might require a pg_restore flag to indicate how many
> simultaneous operations should be performed. Only pg_dump's
> -Fc format has the necessary dependency information.
>
> o To better utilize resources, restore data, primary keys, and
> indexes for a single table before restoring the next table
>
> Hopefully this will allow the CPU-I/O load to be more uniform
> for simultaneous restores. The idea is to start data restores
> for several objects, and once the first object is done, to move
> on to its primary keys and indexes. Over time, simultaneous
> data loads and index builds will be running.
>
> o To better utilize resources, allow pg_restore to check foreign
> keys simultaneously, where possible
> o Allow pg_restore to create all indexes of a table
> concurrently, via a single heap scan
>
> This requires a pg_dump -Fc file because that format contains
> the required dependency information.
> http://archives.postgresql.org/pgsql-general/2007-05/msg01274.php
>
> o Allow pg_restore to load different parts of the COPY data
> simultaneously
< single heap scan, and have a restore of a pg_dump somehow use it
> single heap scan, and have pg_restore use it
< http://archives.postgresql.org/pgsql-general/2007-05/msg01274.php
2008-03-04 09:33:32 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-02/msg00205.php
|
|
|
|
|
|
|
|
|
|
o Allow pg_restore to utilize multiple CPUs and I/O channels by
|
2008-08-19 11:08:56 +08:00
|
|
|
restoring multiple objects simultaneously
|
Add ideas for concurrent pg_dump and pg_restore:
< * pg_dump
> * pg_dump / pg_restore
> o Allow pg_dump to utilize multiple CPUs and I/O channels by dumping
> multiple objects simultaneously
>
> The difficulty with this is getting multiple dump processes to
> produce a single dump output file.
> http://archives.postgresql.org/pgsql-hackers/2008-02/msg00205.php
>
> o Allow pg_restore to utilize multiple CPUs and I/O channels by
> restoring multiple objects simultaneously
>
> This might require a pg_restore flag to indicate how many
> simultaneous operations should be performed. Only pg_dump's
> -Fc format has the necessary dependency information.
>
> o To better utilize resources, restore data, primary keys, and
> indexes for a single table before restoring the next table
>
> Hopefully this will allow the CPU-I/O load to be more uniform
> for simultaneous restores. The idea is to start data restores
> for several objects, and once the first object is done, to move
> on to its primary keys and indexes. Over time, simultaneous
> data loads and index builds will be running.
>
> o To better utilize resources, allow pg_restore to check foreign
> keys simultaneously, where possible
> o Allow pg_restore to create all indexes of a table
> concurrently, via a single heap scan
>
> This requires a pg_dump -Fc file because that format contains
> the required dependency information.
> http://archives.postgresql.org/pgsql-general/2007-05/msg01274.php
>
> o Allow pg_restore to load different parts of the COPY data
> simultaneously
< single heap scan, and have a restore of a pg_dump somehow use it
> single heap scan, and have pg_restore use it
< http://archives.postgresql.org/pgsql-general/2007-05/msg01274.php
2008-03-04 09:33:32 +08:00
|
|
|
|
|
|
|
|
This might require a pg_restore flag to indicate how many
|
|
|
|
|
simultaneous operations should be performed. Only pg_dump's
|
|
|
|
|
-Fc format has the necessary dependency information.
|
2008-03-04 09:38:37 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-02/msg00963.php
|
Add ideas for concurrent pg_dump and pg_restore:
< * pg_dump
> * pg_dump / pg_restore
> o Allow pg_dump to utilize multiple CPUs and I/O channels by dumping
> multiple objects simultaneously
>
> The difficulty with this is getting multiple dump processes to
> produce a single dump output file.
> http://archives.postgresql.org/pgsql-hackers/2008-02/msg00205.php
>
> o Allow pg_restore to utilize multiple CPUs and I/O channels by
> restoring multiple objects simultaneously
>
> This might require a pg_restore flag to indicate how many
> simultaneous operations should be performed. Only pg_dump's
> -Fc format has the necessary dependency information.
>
> o To better utilize resources, restore data, primary keys, and
> indexes for a single table before restoring the next table
>
> Hopefully this will allow the CPU-I/O load to be more uniform
> for simultaneous restores. The idea is to start data restores
> for several objects, and once the first object is done, to move
> on to its primary keys and indexes. Over time, simultaneous
> data loads and index builds will be running.
>
> o To better utilize resources, allow pg_restore to check foreign
> keys simultaneously, where possible
> o Allow pg_restore to create all indexes of a table
> concurrently, via a single heap scan
>
> This requires a pg_dump -Fc file because that format contains
> the required dependency information.
> http://archives.postgresql.org/pgsql-general/2007-05/msg01274.php
>
> o Allow pg_restore to load different parts of the COPY data
> simultaneously
< single heap scan, and have a restore of a pg_dump somehow use it
> single heap scan, and have pg_restore use it
< http://archives.postgresql.org/pgsql-general/2007-05/msg01274.php
2008-03-04 09:33:32 +08:00
|
|
|
|
|
|
|
|
o To better utilize resources, allow pg_restore to check foreign
|
|
|
|
|
keys simultaneously, where possible
|
|
|
|
|
o Allow pg_restore to create all indexes of a table
|
|
|
|
|
concurrently, via a single heap scan
|
|
|
|
|
|
|
|
|
|
This requires a pg_dump -Fc file because that format contains
|
2008-08-19 11:08:56 +08:00
|
|
|
the required dependency information.
|
Add ideas for concurrent pg_dump and pg_restore:
< * pg_dump
> * pg_dump / pg_restore
> o Allow pg_dump to utilize multiple CPUs and I/O channels by dumping
> multiple objects simultaneously
>
> The difficulty with this is getting multiple dump processes to
> produce a single dump output file.
> http://archives.postgresql.org/pgsql-hackers/2008-02/msg00205.php
>
> o Allow pg_restore to utilize multiple CPUs and I/O channels by
> restoring multiple objects simultaneously
>
> This might require a pg_restore flag to indicate how many
> simultaneous operations should be performed. Only pg_dump's
> -Fc format has the necessary dependency information.
>
> o To better utilize resources, restore data, primary keys, and
> indexes for a single table before restoring the next table
>
> Hopefully this will allow the CPU-I/O load to be more uniform
> for simultaneous restores. The idea is to start data restores
> for several objects, and once the first object is done, to move
> on to its primary keys and indexes. Over time, simultaneous
> data loads and index builds will be running.
>
> o To better utilize resources, allow pg_restore to check foreign
> keys simultaneously, where possible
> o Allow pg_restore to create all indexes of a table
> concurrently, via a single heap scan
>
> This requires a pg_dump -Fc file because that format contains
> the required dependency information.
> http://archives.postgresql.org/pgsql-general/2007-05/msg01274.php
>
> o Allow pg_restore to load different parts of the COPY data
> simultaneously
< single heap scan, and have a restore of a pg_dump somehow use it
> single heap scan, and have pg_restore use it
< http://archives.postgresql.org/pgsql-general/2007-05/msg01274.php
2008-03-04 09:33:32 +08:00
|
|
|
http://archives.postgresql.org/pgsql-general/2007-05/msg01274.php
|
|
|
|
|
|
|
|
|
|
o Allow pg_restore to load different parts of the COPY data
|
|
|
|
|
simultaneously
|
2008-06-24 23:53:24 +08:00
|
|
|
o -Prevent pg_dump/pg_restore from being affected by
|
2008-03-12 01:02:33 +08:00
|
|
|
statement_timeout
|
|
|
|
|
|
|
|
|
|
Using psql to restore a pg_dump dump is also affected.
|
2007-11-20 03:27:03 +08:00
|
|
|
|
2008-03-18 06:53:02 +08:00
|
|
|
o Remove pre-7.3 pg_dump code that assumes pg_depend does not exit
|
2008-03-24 22:17:06 +08:00
|
|
|
o Allow pre/data/post files when schema and data are dumped
|
|
|
|
|
separately, for performance reasons
|
2008-03-23 08:32:33 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-02/msg00205.php
|
|
|
|
|
|
2008-03-18 06:53:02 +08:00
|
|
|
|
2005-11-24 12:40:27 +08:00
|
|
|
|
2005-07-05 01:43:42 +08:00
|
|
|
* ecpg
|
2003-06-15 18:34:10 +08:00
|
|
|
o Docs
|
2004-08-01 13:15:58 +08:00
|
|
|
|
Improve indentation of sublists:
< The proper solution to this will probably the use of a master/slave
< replication solution like Sloney and a connection pooling tool like
< pgpool.
> The proper solution to this will probably the use of a master/slave
> replication solution like Sloney and a connection pooling tool like
> pgpool.
114,116c114,116
< You can use any of the master/slave replication servers to use a
< standby server for data warehousing. To allow read/write queries to
< multiple servers, you need multi-master replication like pgcluster.
> You can use any of the master/slave replication servers to use a
> standby server for data warehousing. To allow read/write queries to
> multiple servers, you need multi-master replication like pgcluster.
166,167c166,167
< Currently large objects entries do not have owners. Permissions can
< only be set at the pg_largeobject table level.
> Currently large objects entries do not have owners. Permissions can
> only be set at the pg_largeobject table level.
173c173
< This requires the TOAST column to be stored EXTERNAL.
> This requires the TOAST column to be stored EXTERNAL.
359,360c359,360
< One complexity is whether moving a schema should move all existing
< schema objects or just define the location for future object creation.
> One complexity is whether moving a schema should move all existing
> schema objects or just define the location for future object creation.
364,365c364,365
< Currently non-global system tables must be in the default database
< schema. Global system tables can never be moved.
> Currently non-global system tables must be in the default database
> schema. Global system tables can never be moved.
371,375c371,375
< This might require some background daemon to maintain clustering
< during periods of low usage. It might also require tables to be only
< paritally filled for easier reorganization. Another idea would
< be to create a merged heap/index data file so an index lookup would
< automatically access the heap data too.
> This might require some background daemon to maintain clustering
> during periods of low usage. It might also require tables to be only
> paritally filled for easier reorganization. Another idea would
> be to create a merged heap/index data file so an index lookup would
> automatically access the heap data too.
379,380c379,380
< To do this, determine the ideal cluster index for each system
< table and set the cluster setting during initdb.
> To do this, determine the ideal cluster index for each system
> table and set the cluster setting during initdb.
385,386c385,386
< This requires the use of a savepoint before each COPY line is
< processed, with ROLLBACK on COPY failure.
> This requires the use of a savepoint before each COPY line is
> processed, with ROLLBACK on COPY failure.
395,398c395,398
< This requires using the row ctid to map cursor rows back to the
< original heap row. This become more complicated if WITH HOLD cursors
< are to be supported because WITH HOLD cursors have a copy of the row
< and no FOR UPDATE lock.
> This requires using the row ctid to map cursor rows back to the
> original heap row. This become more complicated if WITH HOLD cursors
> are to be supported because WITH HOLD cursors have a copy of the row
> and no FOR UPDATE lock.
405,406c405,406
< Because WITH HOLD cursors exist outside transactions, this allows
< them to be listed so they can be closed.
> Because WITH HOLD cursors exist outside transactions, this allows
> them to be listed so they can be closed.
413,415c413,415
< This is useful for returning the auto-generated key for an INSERT.
< One complication is how to handle rules that run as part of
< the insert.
> This is useful for returning the auto-generated key for an INSERT.
> One complication is how to handle rules that run as part of
> the insert.
422c422
< This is basically the same as SET search_path.
> This is basically the same as SET search_path.
426,427c426,427
< This requires a checking function to be called after the server
< configuration file is read.
> This requires a checking function to be called after the server
> configuration file is read.
432c432
< Currently only constants are supported.
> Currently only constants are supported.
438,439c438,439
< This requires the cached PL/PgSQL byte code to be invalidated when
< an object referenced in the function is changed.
> This requires the cached PL/PgSQL byte code to be invalidated when
> an object referenced in the function is changed.
512,513c512,513
< Document differences between ecpg and the SQL standard and
< information about the Informix-compatibility module.
> Document differences between ecpg and the SQL standard and
> information about the Informix-compatibility module.
2004-10-19 00:13:43 +08:00
|
|
|
Document differences between ecpg and the SQL standard and
|
|
|
|
|
information about the Informix-compatibility module.
|
2004-08-01 13:15:58 +08:00
|
|
|
|
2005-07-05 01:00:32 +08:00
|
|
|
o Solve cardinality > 1 for input descriptors / variables?
|
2001-11-02 04:06:59 +08:00
|
|
|
o Add a semantic check level, e.g. check if a table really exists
|
2002-01-23 05:55:06 +08:00
|
|
|
o fix handling of DB attributes that are arrays
|
2004-05-07 10:40:43 +08:00
|
|
|
o Use backend PREPARE/EXECUTE facility for ecpg where possible
|
2003-08-09 02:55:35 +08:00
|
|
|
o Implement SQLDA
|
2003-06-15 18:34:10 +08:00
|
|
|
o Fix nested C comments
|
2005-08-24 22:05:37 +08:00
|
|
|
o %sqlwarn[6] should be 'W' if the PRECISION or SCALE value specified
|
2003-12-16 09:35:40 +08:00
|
|
|
o Make SET CONNECTION thread-aware, non-standard?
|
2004-03-07 22:35:47 +08:00
|
|
|
o Allow multidimensional arrays
|
2005-05-17 08:51:58 +08:00
|
|
|
o Add internationalized message strings
|
2006-08-09 06:39:09 +08:00
|
|
|
o Implement COPY FROM STDIN
|
1999-06-07 10:42:07 +08:00
|
|
|
|
2002-12-02 13:42:36 +08:00
|
|
|
|
2006-03-06 23:19:45 +08:00
|
|
|
* libpq
|
2006-07-04 21:22:41 +08:00
|
|
|
o Add PQescapeIdentifierConn()
|
2005-11-17 00:33:44 +08:00
|
|
|
o Prevent PQfnumber() from lowercasing unquoted the column name
|
|
|
|
|
|
2007-08-28 11:00:36 +08:00
|
|
|
PQfnumber() should never have been doing lowercasing, but
|
2005-11-17 00:33:44 +08:00
|
|
|
historically it has so we need a way to prevent it
|
|
|
|
|
|
Update wording, query -> statement:
< * %Allow pooled connections to list all prepared queries
> * %Allow pooled connections to list all prepared statements
28c28
< the queries prepared in the current session.
> the statements prepared in the current session.
143c143
< o Allow a warm standby system to also allow read-only queries
> o Allow a warm standby system to also allow read-only statements
404c404
< * Add GUC to issue notice about queries that use unjoined tables
> * Add GUC to issue notice about statements that use unjoined tables
490c490
< Another idea would be to allow actual SELECT queries in a COPY.
> Another idea would be to allow actual SELECT statements in a COPY.
554c554
< o Allow function argument names to be queries from PL/PgSQL
> o Allow function argument names to be statements from PL/PgSQL
591c591
< o Improve psql's handling of multi-line queries
> o Improve psql's handling of multi-line statements
< Currently, while \e saves a single query as one entry, interactive
< queries are saved one line at a time. Ideally all queries
> Currently, while \e saves a single statement as one entry, interactive
> statements are saved one line at a time. Ideally all statements
665c665
< o Allow query results to be automatically batched to the client
> o Allow statement results to be automatically batched to the client
667c667
< Currently, all query results are transfered to the libpq
> Currently, all statement results are transfered to the libpq
672c672
< One complexity is that a query like SELECT 1/col could error
> One complexity is that a statement like SELECT 1/col could error
739c739
< * Allow queries across databases or servers with transaction
> * Allow statements across databases or servers with transaction
< inheritance, allow it to work for UPDATE and DELETE queries, and allow
< it to be used for all queries with little performance impact
> inheritance, allow it to work for UPDATE and DELETE statements, and allow
> it to be used for all statements with little performance impact
876c876
< * Consider automatic caching of queries at various levels:
> * Consider automatic caching of statements at various levels:
947c947
< a single session using multiple threads to execute a query faster.
> a single session using multiple threads to execute a statement faster.
1025c1025
< * Log queries where the optimizer row estimates were dramatically
> * Log statements where the optimizer row estimates were dramatically
1146c1146
< of result sets using new query protocol
> of result sets using new statement protocol
2005-12-12 21:36:36 +08:00
|
|
|
o Allow statement results to be automatically batched to the client
|
2005-11-17 00:33:44 +08:00
|
|
|
|
2007-02-18 09:34:35 +08:00
|
|
|
Currently all statement results are transferred to the libpq
|
2007-08-28 11:00:36 +08:00
|
|
|
client before libpq makes the results available to the
|
2005-11-17 00:33:44 +08:00
|
|
|
application. This feature would allow the application to make
|
2005-12-17 02:44:07 +08:00
|
|
|
use of the first result rows while the rest are transferred, or
|
2005-11-17 00:33:44 +08:00
|
|
|
held on the server waiting for them to be requested by libpq.
|
Update wording, query -> statement:
< * %Allow pooled connections to list all prepared queries
> * %Allow pooled connections to list all prepared statements
28c28
< the queries prepared in the current session.
> the statements prepared in the current session.
143c143
< o Allow a warm standby system to also allow read-only queries
> o Allow a warm standby system to also allow read-only statements
404c404
< * Add GUC to issue notice about queries that use unjoined tables
> * Add GUC to issue notice about statements that use unjoined tables
490c490
< Another idea would be to allow actual SELECT queries in a COPY.
> Another idea would be to allow actual SELECT statements in a COPY.
554c554
< o Allow function argument names to be queries from PL/PgSQL
> o Allow function argument names to be statements from PL/PgSQL
591c591
< o Improve psql's handling of multi-line queries
> o Improve psql's handling of multi-line statements
< Currently, while \e saves a single query as one entry, interactive
< queries are saved one line at a time. Ideally all queries
> Currently, while \e saves a single statement as one entry, interactive
> statements are saved one line at a time. Ideally all statements
665c665
< o Allow query results to be automatically batched to the client
> o Allow statement results to be automatically batched to the client
667c667
< Currently, all query results are transfered to the libpq
> Currently, all statement results are transfered to the libpq
672c672
< One complexity is that a query like SELECT 1/col could error
> One complexity is that a statement like SELECT 1/col could error
739c739
< * Allow queries across databases or servers with transaction
> * Allow statements across databases or servers with transaction
< inheritance, allow it to work for UPDATE and DELETE queries, and allow
< it to be used for all queries with little performance impact
> inheritance, allow it to work for UPDATE and DELETE statements, and allow
> it to be used for all statements with little performance impact
876c876
< * Consider automatic caching of queries at various levels:
> * Consider automatic caching of statements at various levels:
947c947
< a single session using multiple threads to execute a query faster.
> a single session using multiple threads to execute a statement faster.
1025c1025
< * Log queries where the optimizer row estimates were dramatically
> * Log statements where the optimizer row estimates were dramatically
1146c1146
< of result sets using new query protocol
> of result sets using new statement protocol
2005-12-12 21:36:36 +08:00
|
|
|
One complexity is that a statement like SELECT 1/col could error
|
2005-11-17 00:33:44 +08:00
|
|
|
out mid-way through the result set.
|
Update TODO list based on 8.3 completed items:
< * Allow major upgrades without dump/reload, perhaps using pg_upgrade
< [pg_upgrade]
< * Check for unreferenced table files created by transactions that were
< in-progress when the server terminated abruptly
<
< http://archives.postgresql.org/pgsql-patches/2006-06/msg00096.php
<
> * Check for unreferenced table files created by transactions that were
> in-progress when the server terminated abruptly
>
> http://archives.postgresql.org/pgsql-patches/2006-06/msg00096.php
>
< * Support table partitioning that allows a single table to be stored
< in subtables that are partitioned based on the primary key or a WHERE
< clause
< creation of rules for INSERT/UPDATE/DELETE, and constraints for
< rapid partition selection. Options could include range and hash
> creation of triggers or rules for INSERT/UPDATE/DELETE, and constraints
> for rapid partition selection. Options could include range and hash
<
< * Improve replication solutions
<
< o Load balancing
<
< You can use any of the master/slave replication servers to use a
< standby server for data warehousing. To allow read/write queries to
< multiple servers, you need multi-master replication like pgcluster.
<
< o Allow replication over unreliable or non-persistent links
<
<
< o Mark change-on-restart-only values in postgresql.conf
< All objects in the default database tablespace must have default
< tablespace specifications. This is because new databases are
< created by copying directories. If you mix default tablespace
< tables and tablespace-specified tables in the same directory,
< creating a new database from such a mixed directory would create a
< new database with tables that had incorrect explicit tablespaces.
< To fix this would require modifying pg_class in the newly copied
< database, which we don't currently do.
> Currently all objects in the default database tablespace must
> have default tablespace specifications. This is because new
> databases are created by copying directories. If you mix default
> tablespace tables and tablespace-specified tables in the same
> directory, creating a new database from such a mixed directory
> would create a new database with tables that had incorrect
> explicit tablespaces. To fix this would require modifying
> pg_class in the newly copied database, which we don't currently
> do.
<
< o Allow recovery.conf to allow the same syntax as
> o Allow recovery.conf to support the same syntax as
< * Allow user-defined types to specify a type modifier at table creation
< time
< * Allow all data types to cast to and from TEXT
<
< http://archives.postgresql.org/pgsql-hackers/2007-04/msg00017.php
<
<
< o Add support for year-month syntax, INTERVAL '50-6' YEAR TO MONTH
< o Interpret INTERVAL '1 year' MONTH as CAST (INTERVAL '1 year' AS
< INTERVAL MONTH), and this should return '12 months'
> o Add support for year-month syntax, INTERVAL '50-6' YEAR
> TO MONTH
> o Interpret INTERVAL '1 year' MONTH as CAST (INTERVAL '1
> year' AS INTERVAL MONTH), and this should return '12 months'
< * Allow MONEY to be cast to/from other numeric data types
> * Allow MONEY to be easily cast to/from other numeric data types
>
< * Allow functions to have a schema search path specified at creation time
< * Fix cases where invalid byte encodings are accepted by the database,
< but throw an error on SELECT
<
< http://archives.postgresql.org/pgsql-hackers/2007-03/msg00767.php
< * Improve logging of prepared statements recovered during startup
> * Improve logging of prepared transactions recovered during startup
< * Make standard_conforming_strings the default in 8.4?
> * Make standard_conforming_strings the default in 8.5?
< * Allow the count returned by SELECT, etc to be to represent as an int64
> * Allow the count returned by SELECT, etc to be represented as an int64
< o Use more reliable method for CREATE DATABASE to get a consistent
< copy of db?
< o Fix transaction restriction checks for CREATE DATABASE and
< other commands
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00133.php
< currently allowed.
> currently allowed. This currently is done if the table is
> created inside the same transaction block as the COPY because
> no other backends can see the table.
< o Add SET PATH for schemas?
<
< This is basically the same as SET search_path.
< o Enforce referential integrity for system tables
< o Add Oracle-style packages (Pavel)
<
< A package would be a schema with session-local variables,
< public/private functions, and initialization functions. It
< is also possible to implement these capabilities
< in all schemas and not use a separate "packages"
< syntax at all.
<
< http://archives.postgresql.org/pgsql-hackers/2006-08/msg00384.php
<
< o Add single-step debugging of functions
< o Allow RETURN to return row or record functions
<
< http://archives.postgresql.org/pgsql-patches/2005-11/msg00045.php
< http://archives.postgresql.org/pgsql-patches/2006-08/msg00397.php
< http://archives.postgresql.org/pgsql-hackers/2006-09/msg00388.php
<
< o Fix problems with RETURN NEXT on tables with
< dropped/added columns after function creation
<
< http://archives.postgresql.org/pgsql-patches/2006-02/msg00165.php
<
< * Make consistent use of long/short command options --- pg_ctl needs
< long ones, pg_config doesn't have short ones, postgres doesn't have
< enough long ones, etc.
<
<
<
< o Consider parsing the -c string into individual queries so each
< is run in its own transaction
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00291.php
<
<
< o Remove unnecessary function pointer abstractions in pg_dump source
< code
> o Remove unnecessary function pointer abstractions in pg_dump source
> code
<
<
< o Fix SSL retry to avoid useless repeated connection attempts and
< ensuing misleading error messages
>
<
< This is difficult because it requires datatype-specific knowledge.
<
< * Improve commit_delay handling to reduce fsync()
< * %Add an option to sync() before fsync()'ing checkpoint files
>
< * Reduce lock time during VACUUM FULL by moving tuples with read lock,
< then write lock and truncate table
<
< Moved tuples are invisible to other backends so they don't require a
< write lock. However, the read lock promotion to write lock could lead
< to deadlock situations.
<
< * Prevent long-lived temporary tables from causing frozen-xid advancement
< starvation
<
< The problem is that autovacuum cannot vacuum them to set frozen xids;
< only the session that created them can do that.
<
<
<
< o Use free-space map information to guide refilling
< o Consider logging activity either to the logs or a system view
> The problem is that autovacuum cannot vacuum them to set frozen xids;
> only the session that created them can do that.
< * Add connection pooling
<
< It is unclear if this should be done inside the backend code or done
< by something external like pgpool. The passing of file descriptors to
< existing backends is one of the difficulties with a backend approach.
<
< * Consider reducing memory used for shared buffer reference count
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00752.php
<
< * %Remove memory/file descriptor freeing before ereport(ERROR)
< * %Promote debug_query_string into a server-side function current_query()
< * Allow ecpg to work with MSVC and BCC
< * Add xpath_array() to /contrib/xml2 to return results as an array
< * Allow building in directories containing spaces
<
< This is probably not possible because 'gmake' and other compiler tools
< do not fully support quoting of paths with spaces.
<
< * Fix sgmltools so PDFs can be generated with bookmarks
< * Split out libpq pgpass and environment documentation sections to make
< it easier for non-developers to find
< * Use strlcpy() rather than our StrNCpy() macro
<
< http://archives.postgresql.org/pgsql-hackers/2006-09/msg02108.php
<
< o Re-enable timezone output on log_line_prefix '%t' when a
< shorter timezone string is available
< * Allow statements across databases or servers with transaction
< semantics
<
< This can be done using dblink and two-phase commit.
> * Add Oracle-style packages (Pavel)
< * Add the features of packages
> A package would be a schema with session-local variables,
> public/private functions, and initialization functions. It
> is also possible to implement these capabilities
> in any schema and not use a separate "packages"
> syntax at all.
< o Make private objects accessible only to objects in the same schema
< o Allow current_schema.objname to access current schema objects
< o Add session variables
< o Allow nested schemas
> http://archives.postgresql.org/pgsql-hackers/2006-08/msg00384.php
2007-12-30 11:22:53 +08:00
|
|
|
|
2007-01-07 05:58:22 +08:00
|
|
|
o Consider disallowing multiple queries in PQexec() as an
|
|
|
|
|
additional barrier to SQL injection attacks
|
2005-11-17 00:33:44 +08:00
|
|
|
|
2007-01-11 12:42:02 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-01/msg00184.php
|
|
|
|
|
|
2007-04-03 01:15:39 +08:00
|
|
|
o Add PQexecf() that allows complex parameter substitution
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-03/msg01803.php
|
2005-11-17 00:33:44 +08:00
|
|
|
|
2008-03-08 01:54:15 +08:00
|
|
|
o Add SQLSTATE severity to PGconn return status
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-interfaces/2007-11/msg00015.php
|
2008-03-07 01:19:38 +08:00
|
|
|
|
|
|
|
|
|
2006-05-23 04:39:23 +08:00
|
|
|
Triggers
|
|
|
|
|
========
|
2006-09-30 11:55:32 +08:00
|
|
|
|
2004-08-01 13:15:58 +08:00
|
|
|
* Add deferred trigger queue file
|
|
|
|
|
|
|
|
|
|
Right now all deferred trigger information is stored in backend
|
|
|
|
|
memory. This could exhaust memory for very large trigger queues.
|
2008-05-29 10:04:15 +08:00
|
|
|
This item involves dumping large queues into files, or doing some
|
|
|
|
|
kind of join to process all the triggers, or some bulk operation.
|
2008-05-29 09:58:29 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-05/msg00876.php
|
2004-08-01 13:15:58 +08:00
|
|
|
|
2005-08-24 07:51:18 +08:00
|
|
|
* Allow triggers to be disabled in only the current session.
|
2004-08-01 13:15:58 +08:00
|
|
|
|
2005-08-24 07:51:18 +08:00
|
|
|
This is currently possible by starting a multi-statement transaction,
|
|
|
|
|
modifying the system tables, performing the desired SQL, restoring the
|
|
|
|
|
system tables, and committing the transaction. ALTER TABLE ...
|
2005-08-24 22:24:19 +08:00
|
|
|
TRIGGER requires a table lock so it is not ideal for this usage.
|
2004-08-01 13:15:58 +08:00
|
|
|
|
2003-05-24 09:27:41 +08:00
|
|
|
* With disabled triggers, allow pg_dump to use ALTER TABLE ADD FOREIGN KEY
|
2004-08-01 13:15:58 +08:00
|
|
|
|
|
|
|
|
If the dump is known to be valid, allow foreign keys to be added
|
|
|
|
|
without revalidating the data.
|
|
|
|
|
|
2003-10-21 10:48:09 +08:00
|
|
|
* Allow statement-level triggers to access modified rows
|
2006-06-08 23:41:22 +08:00
|
|
|
* Support triggers on columns
|
|
|
|
|
|
2006-06-09 00:07:23 +08:00
|
|
|
http://archives.postgresql.org/pgsql-patches/2005-07/msg00107.php
|
2006-06-08 23:41:22 +08:00
|
|
|
|
2004-04-20 22:03:30 +08:00
|
|
|
* Allow AFTER triggers on system tables
|
2003-09-11 04:17:21 +08:00
|
|
|
|
2004-08-01 13:15:58 +08:00
|
|
|
System tables are modified in many places in the backend without going
|
|
|
|
|
through the executor and therefore not causing triggers to fire. To
|
|
|
|
|
complete this item, the functions that modify system tables will have
|
|
|
|
|
to fire triggers.
|
|
|
|
|
|
2007-02-01 12:49:43 +08:00
|
|
|
* Tighten trigger permission checks
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-12/msg00564.php
|
|
|
|
|
|
2007-03-25 10:21:19 +08:00
|
|
|
* Allow BEFORE INSERT triggers on views
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-general/2007-02/msg01466.php
|
|
|
|
|
|
2008-03-28 23:18:42 +08:00
|
|
|
* -Add ability to trigger on TRUNCATE
|
2008-05-08 09:45:16 +08:00
|
|
|
* Add database and transaction-level triggers
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-03/msg00451.php
|
2008-07-02 02:26:30 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-05/msg00620.php
|
2002-08-14 10:51:13 +08:00
|
|
|
|
2008-07-17 09:34:33 +08:00
|
|
|
* Reduce locking requirements for creating a trigger
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-06/msg00635.php
|
|
|
|
|
|
|
|
|
|
|
2002-04-18 04:35:23 +08:00
|
|
|
|
2005-07-05 01:00:32 +08:00
|
|
|
Indexes
|
|
|
|
|
=======
|
|
|
|
|
|
|
|
|
|
* Add UNIQUE capability to non-btree indexes
|
|
|
|
|
* Prevent index uniqueness checks when UPDATE does not modify the column
|
|
|
|
|
|
|
|
|
|
Uniqueness (index) checks are done when updating a column even if the
|
|
|
|
|
column is not modified by the UPDATE.
|
|
|
|
|
|
|
|
|
|
* Allow the creation of on-disk bitmap indexes which can be quickly
|
|
|
|
|
combined with other bitmap indexes
|
|
|
|
|
|
|
|
|
|
Such indexes could be more compact if there are only a few distinct values.
|
|
|
|
|
Such indexes can also be compressed. Keeping such indexes updated can be
|
|
|
|
|
costly.
|
2007-01-21 07:18:38 +08:00
|
|
|
|
2006-06-13 00:15:07 +08:00
|
|
|
http://archives.postgresql.org/pgsql-patches/2005-07/msg00512.php
|
2007-01-21 07:18:38 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-12/msg01107.php
|
2008-04-11 02:58:15 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-03/msg00265.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-03/msg01214.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-patches/2007-05/msg00013.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-07/msg00741.php
|
2005-07-05 01:00:32 +08:00
|
|
|
|
|
|
|
|
* Allow accurate statistics to be collected on indexes with more than
|
|
|
|
|
one column or expression indexes, perhaps using per-index statistics
|
2007-02-14 08:47:05 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-performance/2006-10/msg00222.php
|
2007-03-21 08:33:08 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-03/msg01131.php
|
2007-02-14 08:47:05 +08:00
|
|
|
|
2008-05-07 12:45:39 +08:00
|
|
|
* Consider increasing the default and maximum number of statistics targets,
|
|
|
|
|
and reduce statistics target overhead
|
2008-03-12 02:30:50 +08:00
|
|
|
|
|
|
|
|
Also consider having a larger statistics target for indexed columns
|
2008-05-07 12:46:01 +08:00
|
|
|
and expression indexes.
|
2008-03-12 03:32:03 +08:00
|
|
|
http://archives.postgresql.org/pgsql-general/2007-05/msg01228.php
|
2008-03-12 03:34:12 +08:00
|
|
|
http://archives.postgresql.org/pgsql-general/2007-06/msg00542.php
|
2008-03-18 05:09:30 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-01/msg01066.php
|
2008-05-07 12:45:39 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-03/msg00188.php
|
2008-03-12 02:30:50 +08:00
|
|
|
|
2008-04-24 23:54:00 +08:00
|
|
|
* Consider smaller indexes that record a range of values per heap page,
|
|
|
|
|
rather than having one index entry for every heap row
|
2008-03-07 06:09:43 +08:00
|
|
|
|
2008-04-24 23:54:00 +08:00
|
|
|
This is useful if the heap is clustered by the indexed values.
|
2008-03-07 06:09:43 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-12/msg00341.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-02/msg01264.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-03/msg00465.php
|
2008-03-07 06:17:41 +08:00
|
|
|
http://archives.postgresql.org/pgsql-patches/2007-03/msg00163.php
|
2008-04-11 02:58:15 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-08/msg00014.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-08/msg00487.php
|
2008-04-24 10:24:29 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-04/msg01589.php
|
2008-03-07 06:09:43 +08:00
|
|
|
|
2007-01-31 11:17:49 +08:00
|
|
|
* Add REINDEX CONCURRENTLY, like CREATE INDEX CONCURRENTLY
|
|
|
|
|
|
|
|
|
|
This is difficult because you must upgrade to an exclusive table lock
|
|
|
|
|
to replace the existing index file. CREATE INDEX CONCURRENTLY does not
|
|
|
|
|
have this complication. This would allow index compaction without
|
|
|
|
|
downtime.
|
2008-03-13 03:15:25 +08:00
|
|
|
http://archives.postgresql.org/pgsql-performance/2007-08/msg00289.php
|
2007-01-31 11:17:49 +08:00
|
|
|
|
2007-07-17 08:07:54 +08:00
|
|
|
* Allow multiple indexes to be created concurrently, ideally via a
|
Add ideas for concurrent pg_dump and pg_restore:
< * pg_dump
> * pg_dump / pg_restore
> o Allow pg_dump to utilize multiple CPUs and I/O channels by dumping
> multiple objects simultaneously
>
> The difficulty with this is getting multiple dump processes to
> produce a single dump output file.
> http://archives.postgresql.org/pgsql-hackers/2008-02/msg00205.php
>
> o Allow pg_restore to utilize multiple CPUs and I/O channels by
> restoring multiple objects simultaneously
>
> This might require a pg_restore flag to indicate how many
> simultaneous operations should be performed. Only pg_dump's
> -Fc format has the necessary dependency information.
>
> o To better utilize resources, restore data, primary keys, and
> indexes for a single table before restoring the next table
>
> Hopefully this will allow the CPU-I/O load to be more uniform
> for simultaneous restores. The idea is to start data restores
> for several objects, and once the first object is done, to move
> on to its primary keys and indexes. Over time, simultaneous
> data loads and index builds will be running.
>
> o To better utilize resources, allow pg_restore to check foreign
> keys simultaneously, where possible
> o Allow pg_restore to create all indexes of a table
> concurrently, via a single heap scan
>
> This requires a pg_dump -Fc file because that format contains
> the required dependency information.
> http://archives.postgresql.org/pgsql-general/2007-05/msg01274.php
>
> o Allow pg_restore to load different parts of the COPY data
> simultaneously
< single heap scan, and have a restore of a pg_dump somehow use it
> single heap scan, and have pg_restore use it
< http://archives.postgresql.org/pgsql-general/2007-05/msg01274.php
2008-03-04 09:33:32 +08:00
|
|
|
single heap scan, and have pg_restore use it
|
2007-07-17 08:07:54 +08:00
|
|
|
|
2008-03-25 10:17:17 +08:00
|
|
|
* Consider sorting entries before inserting into btree index
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-general/2008-01/msg01010.php
|
|
|
|
|
|
2008-04-25 00:42:39 +08:00
|
|
|
* Allow index scans to return matching index keys, not just the matching
|
|
|
|
|
heap locations
|
2007-07-17 08:07:54 +08:00
|
|
|
|
2008-04-25 01:06:13 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-04/msg01657.php
|
|
|
|
|
|
|
|
|
|
|
2005-07-31 11:08:35 +08:00
|
|
|
|
2007-01-07 04:00:10 +08:00
|
|
|
* Inheritance
|
|
|
|
|
|
|
|
|
|
o Allow inherited tables to inherit indexes, UNIQUE constraints,
|
|
|
|
|
and primary/foreign keys
|
|
|
|
|
o Honor UNIQUE INDEX on base column in INSERTs/UPDATEs
|
|
|
|
|
on inherited table, e.g. INSERT INTO inherit_table
|
|
|
|
|
(unique_index_col) VALUES (dup) should fail
|
|
|
|
|
|
|
|
|
|
The main difficulty with this item is the problem of
|
|
|
|
|
creating an index that can span multiple tables.
|
|
|
|
|
|
|
|
|
|
o Allow SELECT ... FOR UPDATE on inherited tables
|
2008-03-07 09:06:55 +08:00
|
|
|
o Require all CHECK constraints to be inherited
|
2008-03-07 09:06:36 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-bugs/2007-04/msg00026.php
|
2007-01-07 04:00:10 +08:00
|
|
|
|
2008-03-23 06:06:12 +08:00
|
|
|
o Add checks to prevent a CREATE RULE views on inherited tables
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-general/2008-02/msg01420.php
|
2008-03-23 06:52:26 +08:00
|
|
|
http://archives.postgresql.org/pgsql-general/2008-03/msg00077.php
|
2008-03-23 06:06:12 +08:00
|
|
|
|
2007-01-07 04:00:10 +08:00
|
|
|
|
2005-07-05 01:43:42 +08:00
|
|
|
* GIST
|
|
|
|
|
|
|
|
|
|
o Add more GIST index support for geometric data types
|
|
|
|
|
o Allow GIST indexes to create certain complex index types, like
|
|
|
|
|
digital trees (see Aoki)
|
2005-07-05 01:00:32 +08:00
|
|
|
|
2007-01-07 04:00:10 +08:00
|
|
|
|
2005-07-05 01:00:32 +08:00
|
|
|
* Hash
|
2008-03-04 02:45:24 +08:00
|
|
|
|
2008-08-19 11:08:56 +08:00
|
|
|
o http://archives.postgresql.org/pgsql-hackers/2007-09/msg00051.php
|
2005-07-05 01:43:42 +08:00
|
|
|
|
2005-07-05 01:00:32 +08:00
|
|
|
o Pack hash index buckets onto disk pages more efficiently
|
|
|
|
|
|
Great TODO updates from Tom:
< Currently SIGTERM of a backend can lead to lock table corruption.
> Lock table corruption following SIGTERM of an individual backend
> has been reported in 8.0. A possible cause was fixed in 8.1, but
> it is unknown whether other problems exist. This item mostly
> requires additional testing rather than of writing any new code.
< o Allow postgresql.conf values to be set so they can not be changed
< by the user
166c167,171
< * %Remove Money type, add money formatting for decimal type
> * Improve the MONEY data type
>
> Change the MONEY data type to use DECIMAL internally, with special
> locale-aware output formatting.
>
225c230
< o %Allow MIN()/MAX() on arrays
> o -Allow MIN()/MAX() on arrays
228c233
< o Modify array literal representation to handle array index lower bound
> o -Modify array literal representation to handle array index lower bound
235a241
> o Auto-delete large objects when referencing row is deleted
< Currently large objects entries do not have owners. Permissions can
< only be set at the pg_largeobject table level.
> /contrib/lo offers this functionality.
240d244
< o Auto-delete large objects when referencing row is deleted
< * %Have views on temporary tables exist in the temporary namespace
< * Allow temporary views on non-temporary tables
< * %Allow RULE recompilation
> * -Have views on temporary tables exist in the temporary namespace
> * -Allow temporary views on non-temporary tables
> * Allow VIEW/RULE recompilation when the underlying tables change
340a345,347
>
> This is like DELETE CASCADE, but truncates.
>
381c388
< * Make row-wise comparisons work per SQL spec
> * %Make row-wise comparisons work per SQL spec
< o Currently the system uses the operating system COPY command to
< create a new database. Add ON COMMIT capability to CREATE TABLE AS
< SELECT
> o Add ON COMMIT capability to CREATE TABLE AS ... SELECT
427c432
< o %Add ALTER DOMAIN TYPE
> o Add ALTER DOMAIN to modify the underlying data type
< o %Disallow dropping of an inherited constraint
< o -Allow objects to be moved to different schemas
> o Add missing object types for ALTER ... SET SCHEMA
< o %Prevent child tables from altering constraints like CHECK that were
< inherited from the parent table
> o %Disallow dropping of an inherited constraint
> o %Prevent child tables from altering or dropping constraints
> like CHECK that were inherited from the parent table
< o Handle references to temporary tables that are created, destroyed,
< then recreated during a session, and EXECUTE is not used
<
< This requires the cached PL/PgSQL byte code to be invalidated when
< an object referenced in the function is changed.
<
< o Add table function support to pltcl, plperl, plpython?
< o Allow PL/pgSQL to name columns by ordinal position, e.g. rec.(3)
> o Add table function support to pltcl, plpython
549a548
> o Allow function argument names to be queries from PL/PgSQL
< o Pass arrays natively instead of as text between plperl and postgres
< o Add support for polymorphic arguments and return types to plperl
> o -Pass arrays natively instead of as text between plperl and postgres
> o Add support for polymorphic arguments and return types to
> languages other than PL/PgSQL
> o Add support for OUT and INOUT parameters to languages other
> than PL/PgSQL
< * Allow libpq to access SQLSTATE so pg_ctl can test for connection failure
<
< This would be used for checking if the server is up.
<
565c563
< * Have initdb set DateStyle based on locale?
> * Have initdb set the input DateStyle (MDY or DMY) based on locale?
567d564
< * Add a schema option to createlang
< o Add pg_dumpall custom format dumps.
<
< This is probably best done by combining pg_dump and pg_dumpall
< into a single binary.
<
> o Add pg_dumpall custom format dumps?
612c605,606
< o Remove unnecessary abstractions in pg_dump source code
> o Remove unnecessary function pointer abstractions in pg_dump source
> code
< * %Remove CREATE CONSTRAINT TRIGGER
<
< This was used in older releases to dump referential integrity
< constraints.
<
682a672,675
> This is particularly important for references to temporary tables
> in PL/PgSQL because PL/PgSQL caches query plans. The only workaround
> in PL/PgSQL is to use EXECUTE.
>
748c741
< * Fetch heap pages matching index entries in sequential order
> * -Fetch heap pages matching index entries in sequential order
797c790
< Currently no only one hash bucket can be stored on a page. Ideally
> Currently only one hash bucket can be stored on a page. Ideally
806a800,802
> o Add WAL logging for crash recovery
> o Allow multi-column hash indexes
>
812a809,812
>
> Ideally this requires a separate test program that can be run
> at initdb time or optionally later.
>
867c867
< * Improve the background writer
> * -Improve the background writer
< For large table adjustements during vacuum, it is faster to reindex
< rather than update the index.
> For large table adjustements during VACUUM FULL, it is faster to
> reindex rather than update the index.
< * Reduce lock time by moving tuples with read lock, then write
< lock and truncate table
> * Reduce lock time during VACUUM FULL by moving tuples with read lock,
> then write lock and truncate table
919c919,920
< o %Suggest VACUUM FULL if a table is nearly empty
> o %Issue log message to suggest VACUUM FULL if a table is nearly
> empty?
995d995
< * Add WAL index reliability improvement to non-btree indexes
1045c1045
< * ANALYZE should record a pg_statistic entry for an all-NULL column
> * -ANALYZE should record a pg_statistic entry for an all-NULL column
1047a1048,1051
> * Allow constraint_elimination to be automatically performed
>
> This requires additional code to reduce the performance loss caused by
> constraint elimination.
1090c1094
< * Remove memory/file descriptor freeing before ereport(ERROR)
> * %Remove memory/file descriptor freeing before ereport(ERROR)
< * Promote debug_query_string into a server-side function current_query()
< * Allow the identifier length to be increased via a configure option
> * %Promote debug_query_string into a server-side function current_query()
> * %Allow the identifier length to be increased via a configure option
1113d1116
< * Fix cross-compiling of time zone database via 'zic'
1130c1133
< o Improve dlerror() reporting string
> o -Improve dlerror() reporting string
1132c1135
< o Add support for Unicode
> o %Add support for Unicode
2005-08-27 02:52:44 +08:00
|
|
|
Currently only one hash bucket can be stored on a page. Ideally
|
2005-07-05 01:00:32 +08:00
|
|
|
several hash buckets could be stored on a single page and greater
|
|
|
|
|
granularity used for the hash algorithm.
|
|
|
|
|
|
2007-01-17 04:58:38 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2004-06/msg00168.php
|
|
|
|
|
|
2005-07-05 01:00:32 +08:00
|
|
|
o Consider sorting hash buckets so entries can be found using a
|
|
|
|
|
binary search, rather than a linear scan
|
|
|
|
|
o In hash indexes, consider storing the hash value with or instead
|
|
|
|
|
of the key itself
|
Great TODO updates from Tom:
< Currently SIGTERM of a backend can lead to lock table corruption.
> Lock table corruption following SIGTERM of an individual backend
> has been reported in 8.0. A possible cause was fixed in 8.1, but
> it is unknown whether other problems exist. This item mostly
> requires additional testing rather than of writing any new code.
< o Allow postgresql.conf values to be set so they can not be changed
< by the user
166c167,171
< * %Remove Money type, add money formatting for decimal type
> * Improve the MONEY data type
>
> Change the MONEY data type to use DECIMAL internally, with special
> locale-aware output formatting.
>
225c230
< o %Allow MIN()/MAX() on arrays
> o -Allow MIN()/MAX() on arrays
228c233
< o Modify array literal representation to handle array index lower bound
> o -Modify array literal representation to handle array index lower bound
235a241
> o Auto-delete large objects when referencing row is deleted
< Currently large objects entries do not have owners. Permissions can
< only be set at the pg_largeobject table level.
> /contrib/lo offers this functionality.
240d244
< o Auto-delete large objects when referencing row is deleted
< * %Have views on temporary tables exist in the temporary namespace
< * Allow temporary views on non-temporary tables
< * %Allow RULE recompilation
> * -Have views on temporary tables exist in the temporary namespace
> * -Allow temporary views on non-temporary tables
> * Allow VIEW/RULE recompilation when the underlying tables change
340a345,347
>
> This is like DELETE CASCADE, but truncates.
>
381c388
< * Make row-wise comparisons work per SQL spec
> * %Make row-wise comparisons work per SQL spec
< o Currently the system uses the operating system COPY command to
< create a new database. Add ON COMMIT capability to CREATE TABLE AS
< SELECT
> o Add ON COMMIT capability to CREATE TABLE AS ... SELECT
427c432
< o %Add ALTER DOMAIN TYPE
> o Add ALTER DOMAIN to modify the underlying data type
< o %Disallow dropping of an inherited constraint
< o -Allow objects to be moved to different schemas
> o Add missing object types for ALTER ... SET SCHEMA
< o %Prevent child tables from altering constraints like CHECK that were
< inherited from the parent table
> o %Disallow dropping of an inherited constraint
> o %Prevent child tables from altering or dropping constraints
> like CHECK that were inherited from the parent table
< o Handle references to temporary tables that are created, destroyed,
< then recreated during a session, and EXECUTE is not used
<
< This requires the cached PL/PgSQL byte code to be invalidated when
< an object referenced in the function is changed.
<
< o Add table function support to pltcl, plperl, plpython?
< o Allow PL/pgSQL to name columns by ordinal position, e.g. rec.(3)
> o Add table function support to pltcl, plpython
549a548
> o Allow function argument names to be queries from PL/PgSQL
< o Pass arrays natively instead of as text between plperl and postgres
< o Add support for polymorphic arguments and return types to plperl
> o -Pass arrays natively instead of as text between plperl and postgres
> o Add support for polymorphic arguments and return types to
> languages other than PL/PgSQL
> o Add support for OUT and INOUT parameters to languages other
> than PL/PgSQL
< * Allow libpq to access SQLSTATE so pg_ctl can test for connection failure
<
< This would be used for checking if the server is up.
<
565c563
< * Have initdb set DateStyle based on locale?
> * Have initdb set the input DateStyle (MDY or DMY) based on locale?
567d564
< * Add a schema option to createlang
< o Add pg_dumpall custom format dumps.
<
< This is probably best done by combining pg_dump and pg_dumpall
< into a single binary.
<
> o Add pg_dumpall custom format dumps?
612c605,606
< o Remove unnecessary abstractions in pg_dump source code
> o Remove unnecessary function pointer abstractions in pg_dump source
> code
< * %Remove CREATE CONSTRAINT TRIGGER
<
< This was used in older releases to dump referential integrity
< constraints.
<
682a672,675
> This is particularly important for references to temporary tables
> in PL/PgSQL because PL/PgSQL caches query plans. The only workaround
> in PL/PgSQL is to use EXECUTE.
>
748c741
< * Fetch heap pages matching index entries in sequential order
> * -Fetch heap pages matching index entries in sequential order
797c790
< Currently no only one hash bucket can be stored on a page. Ideally
> Currently only one hash bucket can be stored on a page. Ideally
806a800,802
> o Add WAL logging for crash recovery
> o Allow multi-column hash indexes
>
812a809,812
>
> Ideally this requires a separate test program that can be run
> at initdb time or optionally later.
>
867c867
< * Improve the background writer
> * -Improve the background writer
< For large table adjustements during vacuum, it is faster to reindex
< rather than update the index.
> For large table adjustements during VACUUM FULL, it is faster to
> reindex rather than update the index.
< * Reduce lock time by moving tuples with read lock, then write
< lock and truncate table
> * Reduce lock time during VACUUM FULL by moving tuples with read lock,
> then write lock and truncate table
919c919,920
< o %Suggest VACUUM FULL if a table is nearly empty
> o %Issue log message to suggest VACUUM FULL if a table is nearly
> empty?
995d995
< * Add WAL index reliability improvement to non-btree indexes
1045c1045
< * ANALYZE should record a pg_statistic entry for an all-NULL column
> * -ANALYZE should record a pg_statistic entry for an all-NULL column
1047a1048,1051
> * Allow constraint_elimination to be automatically performed
>
> This requires additional code to reduce the performance loss caused by
> constraint elimination.
1090c1094
< * Remove memory/file descriptor freeing before ereport(ERROR)
> * %Remove memory/file descriptor freeing before ereport(ERROR)
< * Promote debug_query_string into a server-side function current_query()
< * Allow the identifier length to be increased via a configure option
> * %Promote debug_query_string into a server-side function current_query()
> * %Allow the identifier length to be increased via a configure option
1113d1116
< * Fix cross-compiling of time zone database via 'zic'
1130c1133
< o Improve dlerror() reporting string
> o -Improve dlerror() reporting string
1132c1135
< o Add support for Unicode
> o %Add support for Unicode
2005-08-27 02:52:44 +08:00
|
|
|
o Add WAL logging for crash recovery
|
|
|
|
|
o Allow multi-column hash indexes
|
2008-03-17 09:46:42 +08:00
|
|
|
o -During index creation, pre-sort the tuples to improve build speed
|
2007-03-22 05:25:46 +08:00
|
|
|
|
2008-06-24 04:20:54 +08:00
|
|
|
Sorting
|
|
|
|
|
=======
|
|
|
|
|
* Consider using hash buckets to do DISTINCT, rather than sorting
|
|
|
|
|
|
|
|
|
|
This would be beneficial when there are few distinct values. This is
|
|
|
|
|
already used by GROUP BY.
|
|
|
|
|
|
|
|
|
|
* Consider whether duplicate keys should be sorted by block/offset
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-03/msg00558.php
|
|
|
|
|
|
|
|
|
|
* -Avoid tuple some tuple copying in sort routines
|
|
|
|
|
* Consider being smarter about memory and external files used during
|
|
|
|
|
sorts
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-11/msg01101.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-12/msg00045.php
|
|
|
|
|
|
|
|
|
|
* Consider detoasting keys before sorting
|
Great TODO updates from Tom:
< Currently SIGTERM of a backend can lead to lock table corruption.
> Lock table corruption following SIGTERM of an individual backend
> has been reported in 8.0. A possible cause was fixed in 8.1, but
> it is unknown whether other problems exist. This item mostly
> requires additional testing rather than of writing any new code.
< o Allow postgresql.conf values to be set so they can not be changed
< by the user
166c167,171
< * %Remove Money type, add money formatting for decimal type
> * Improve the MONEY data type
>
> Change the MONEY data type to use DECIMAL internally, with special
> locale-aware output formatting.
>
225c230
< o %Allow MIN()/MAX() on arrays
> o -Allow MIN()/MAX() on arrays
228c233
< o Modify array literal representation to handle array index lower bound
> o -Modify array literal representation to handle array index lower bound
235a241
> o Auto-delete large objects when referencing row is deleted
< Currently large objects entries do not have owners. Permissions can
< only be set at the pg_largeobject table level.
> /contrib/lo offers this functionality.
240d244
< o Auto-delete large objects when referencing row is deleted
< * %Have views on temporary tables exist in the temporary namespace
< * Allow temporary views on non-temporary tables
< * %Allow RULE recompilation
> * -Have views on temporary tables exist in the temporary namespace
> * -Allow temporary views on non-temporary tables
> * Allow VIEW/RULE recompilation when the underlying tables change
340a345,347
>
> This is like DELETE CASCADE, but truncates.
>
381c388
< * Make row-wise comparisons work per SQL spec
> * %Make row-wise comparisons work per SQL spec
< o Currently the system uses the operating system COPY command to
< create a new database. Add ON COMMIT capability to CREATE TABLE AS
< SELECT
> o Add ON COMMIT capability to CREATE TABLE AS ... SELECT
427c432
< o %Add ALTER DOMAIN TYPE
> o Add ALTER DOMAIN to modify the underlying data type
< o %Disallow dropping of an inherited constraint
< o -Allow objects to be moved to different schemas
> o Add missing object types for ALTER ... SET SCHEMA
< o %Prevent child tables from altering constraints like CHECK that were
< inherited from the parent table
> o %Disallow dropping of an inherited constraint
> o %Prevent child tables from altering or dropping constraints
> like CHECK that were inherited from the parent table
< o Handle references to temporary tables that are created, destroyed,
< then recreated during a session, and EXECUTE is not used
<
< This requires the cached PL/PgSQL byte code to be invalidated when
< an object referenced in the function is changed.
<
< o Add table function support to pltcl, plperl, plpython?
< o Allow PL/pgSQL to name columns by ordinal position, e.g. rec.(3)
> o Add table function support to pltcl, plpython
549a548
> o Allow function argument names to be queries from PL/PgSQL
< o Pass arrays natively instead of as text between plperl and postgres
< o Add support for polymorphic arguments and return types to plperl
> o -Pass arrays natively instead of as text between plperl and postgres
> o Add support for polymorphic arguments and return types to
> languages other than PL/PgSQL
> o Add support for OUT and INOUT parameters to languages other
> than PL/PgSQL
< * Allow libpq to access SQLSTATE so pg_ctl can test for connection failure
<
< This would be used for checking if the server is up.
<
565c563
< * Have initdb set DateStyle based on locale?
> * Have initdb set the input DateStyle (MDY or DMY) based on locale?
567d564
< * Add a schema option to createlang
< o Add pg_dumpall custom format dumps.
<
< This is probably best done by combining pg_dump and pg_dumpall
< into a single binary.
<
> o Add pg_dumpall custom format dumps?
612c605,606
< o Remove unnecessary abstractions in pg_dump source code
> o Remove unnecessary function pointer abstractions in pg_dump source
> code
< * %Remove CREATE CONSTRAINT TRIGGER
<
< This was used in older releases to dump referential integrity
< constraints.
<
682a672,675
> This is particularly important for references to temporary tables
> in PL/PgSQL because PL/PgSQL caches query plans. The only workaround
> in PL/PgSQL is to use EXECUTE.
>
748c741
< * Fetch heap pages matching index entries in sequential order
> * -Fetch heap pages matching index entries in sequential order
797c790
< Currently no only one hash bucket can be stored on a page. Ideally
> Currently only one hash bucket can be stored on a page. Ideally
806a800,802
> o Add WAL logging for crash recovery
> o Allow multi-column hash indexes
>
812a809,812
>
> Ideally this requires a separate test program that can be run
> at initdb time or optionally later.
>
867c867
< * Improve the background writer
> * -Improve the background writer
< For large table adjustements during vacuum, it is faster to reindex
< rather than update the index.
> For large table adjustements during VACUUM FULL, it is faster to
> reindex rather than update the index.
< * Reduce lock time by moving tuples with read lock, then write
< lock and truncate table
> * Reduce lock time during VACUUM FULL by moving tuples with read lock,
> then write lock and truncate table
919c919,920
< o %Suggest VACUUM FULL if a table is nearly empty
> o %Issue log message to suggest VACUUM FULL if a table is nearly
> empty?
995d995
< * Add WAL index reliability improvement to non-btree indexes
1045c1045
< * ANALYZE should record a pg_statistic entry for an all-NULL column
> * -ANALYZE should record a pg_statistic entry for an all-NULL column
1047a1048,1051
> * Allow constraint_elimination to be automatically performed
>
> This requires additional code to reduce the performance loss caused by
> constraint elimination.
1090c1094
< * Remove memory/file descriptor freeing before ereport(ERROR)
> * %Remove memory/file descriptor freeing before ereport(ERROR)
< * Promote debug_query_string into a server-side function current_query()
< * Allow the identifier length to be increased via a configure option
> * %Promote debug_query_string into a server-side function current_query()
> * %Allow the identifier length to be increased via a configure option
1113d1116
< * Fix cross-compiling of time zone database via 'zic'
1130c1133
< o Improve dlerror() reporting string
> o -Improve dlerror() reporting string
1132c1135
< o Add support for Unicode
> o %Add support for Unicode
2005-08-27 02:52:44 +08:00
|
|
|
|
1999-07-07 04:41:22 +08:00
|
|
|
|
2002-04-26 04:20:50 +08:00
|
|
|
Fsync
|
|
|
|
|
=====
|
1999-07-07 04:41:22 +08:00
|
|
|
|
2001-03-21 04:31:07 +08:00
|
|
|
* Determine optimal fdatasync/fsync, O_SYNC/O_DSYNC options
|
Great TODO updates from Tom:
< Currently SIGTERM of a backend can lead to lock table corruption.
> Lock table corruption following SIGTERM of an individual backend
> has been reported in 8.0. A possible cause was fixed in 8.1, but
> it is unknown whether other problems exist. This item mostly
> requires additional testing rather than of writing any new code.
< o Allow postgresql.conf values to be set so they can not be changed
< by the user
166c167,171
< * %Remove Money type, add money formatting for decimal type
> * Improve the MONEY data type
>
> Change the MONEY data type to use DECIMAL internally, with special
> locale-aware output formatting.
>
225c230
< o %Allow MIN()/MAX() on arrays
> o -Allow MIN()/MAX() on arrays
228c233
< o Modify array literal representation to handle array index lower bound
> o -Modify array literal representation to handle array index lower bound
235a241
> o Auto-delete large objects when referencing row is deleted
< Currently large objects entries do not have owners. Permissions can
< only be set at the pg_largeobject table level.
> /contrib/lo offers this functionality.
240d244
< o Auto-delete large objects when referencing row is deleted
< * %Have views on temporary tables exist in the temporary namespace
< * Allow temporary views on non-temporary tables
< * %Allow RULE recompilation
> * -Have views on temporary tables exist in the temporary namespace
> * -Allow temporary views on non-temporary tables
> * Allow VIEW/RULE recompilation when the underlying tables change
340a345,347
>
> This is like DELETE CASCADE, but truncates.
>
381c388
< * Make row-wise comparisons work per SQL spec
> * %Make row-wise comparisons work per SQL spec
< o Currently the system uses the operating system COPY command to
< create a new database. Add ON COMMIT capability to CREATE TABLE AS
< SELECT
> o Add ON COMMIT capability to CREATE TABLE AS ... SELECT
427c432
< o %Add ALTER DOMAIN TYPE
> o Add ALTER DOMAIN to modify the underlying data type
< o %Disallow dropping of an inherited constraint
< o -Allow objects to be moved to different schemas
> o Add missing object types for ALTER ... SET SCHEMA
< o %Prevent child tables from altering constraints like CHECK that were
< inherited from the parent table
> o %Disallow dropping of an inherited constraint
> o %Prevent child tables from altering or dropping constraints
> like CHECK that were inherited from the parent table
< o Handle references to temporary tables that are created, destroyed,
< then recreated during a session, and EXECUTE is not used
<
< This requires the cached PL/PgSQL byte code to be invalidated when
< an object referenced in the function is changed.
<
< o Add table function support to pltcl, plperl, plpython?
< o Allow PL/pgSQL to name columns by ordinal position, e.g. rec.(3)
> o Add table function support to pltcl, plpython
549a548
> o Allow function argument names to be queries from PL/PgSQL
< o Pass arrays natively instead of as text between plperl and postgres
< o Add support for polymorphic arguments and return types to plperl
> o -Pass arrays natively instead of as text between plperl and postgres
> o Add support for polymorphic arguments and return types to
> languages other than PL/PgSQL
> o Add support for OUT and INOUT parameters to languages other
> than PL/PgSQL
< * Allow libpq to access SQLSTATE so pg_ctl can test for connection failure
<
< This would be used for checking if the server is up.
<
565c563
< * Have initdb set DateStyle based on locale?
> * Have initdb set the input DateStyle (MDY or DMY) based on locale?
567d564
< * Add a schema option to createlang
< o Add pg_dumpall custom format dumps.
<
< This is probably best done by combining pg_dump and pg_dumpall
< into a single binary.
<
> o Add pg_dumpall custom format dumps?
612c605,606
< o Remove unnecessary abstractions in pg_dump source code
> o Remove unnecessary function pointer abstractions in pg_dump source
> code
< * %Remove CREATE CONSTRAINT TRIGGER
<
< This was used in older releases to dump referential integrity
< constraints.
<
682a672,675
> This is particularly important for references to temporary tables
> in PL/PgSQL because PL/PgSQL caches query plans. The only workaround
> in PL/PgSQL is to use EXECUTE.
>
748c741
< * Fetch heap pages matching index entries in sequential order
> * -Fetch heap pages matching index entries in sequential order
797c790
< Currently no only one hash bucket can be stored on a page. Ideally
> Currently only one hash bucket can be stored on a page. Ideally
806a800,802
> o Add WAL logging for crash recovery
> o Allow multi-column hash indexes
>
812a809,812
>
> Ideally this requires a separate test program that can be run
> at initdb time or optionally later.
>
867c867
< * Improve the background writer
> * -Improve the background writer
< For large table adjustements during vacuum, it is faster to reindex
< rather than update the index.
> For large table adjustements during VACUUM FULL, it is faster to
> reindex rather than update the index.
< * Reduce lock time by moving tuples with read lock, then write
< lock and truncate table
> * Reduce lock time during VACUUM FULL by moving tuples with read lock,
> then write lock and truncate table
919c919,920
< o %Suggest VACUUM FULL if a table is nearly empty
> o %Issue log message to suggest VACUUM FULL if a table is nearly
> empty?
995d995
< * Add WAL index reliability improvement to non-btree indexes
1045c1045
< * ANALYZE should record a pg_statistic entry for an all-NULL column
> * -ANALYZE should record a pg_statistic entry for an all-NULL column
1047a1048,1051
> * Allow constraint_elimination to be automatically performed
>
> This requires additional code to reduce the performance loss caused by
> constraint elimination.
1090c1094
< * Remove memory/file descriptor freeing before ereport(ERROR)
> * %Remove memory/file descriptor freeing before ereport(ERROR)
< * Promote debug_query_string into a server-side function current_query()
< * Allow the identifier length to be increased via a configure option
> * %Promote debug_query_string into a server-side function current_query()
> * %Allow the identifier length to be increased via a configure option
1113d1116
< * Fix cross-compiling of time zone database via 'zic'
1130c1133
< o Improve dlerror() reporting string
> o -Improve dlerror() reporting string
1132c1135
< o Add support for Unicode
> o %Add support for Unicode
2005-08-27 02:52:44 +08:00
|
|
|
|
|
|
|
|
Ideally this requires a separate test program that can be run
|
2005-12-08 01:29:14 +08:00
|
|
|
at initdb time or optionally later. Consider O_SYNC when
|
|
|
|
|
O_DIRECT exists.
|
Great TODO updates from Tom:
< Currently SIGTERM of a backend can lead to lock table corruption.
> Lock table corruption following SIGTERM of an individual backend
> has been reported in 8.0. A possible cause was fixed in 8.1, but
> it is unknown whether other problems exist. This item mostly
> requires additional testing rather than of writing any new code.
< o Allow postgresql.conf values to be set so they can not be changed
< by the user
166c167,171
< * %Remove Money type, add money formatting for decimal type
> * Improve the MONEY data type
>
> Change the MONEY data type to use DECIMAL internally, with special
> locale-aware output formatting.
>
225c230
< o %Allow MIN()/MAX() on arrays
> o -Allow MIN()/MAX() on arrays
228c233
< o Modify array literal representation to handle array index lower bound
> o -Modify array literal representation to handle array index lower bound
235a241
> o Auto-delete large objects when referencing row is deleted
< Currently large objects entries do not have owners. Permissions can
< only be set at the pg_largeobject table level.
> /contrib/lo offers this functionality.
240d244
< o Auto-delete large objects when referencing row is deleted
< * %Have views on temporary tables exist in the temporary namespace
< * Allow temporary views on non-temporary tables
< * %Allow RULE recompilation
> * -Have views on temporary tables exist in the temporary namespace
> * -Allow temporary views on non-temporary tables
> * Allow VIEW/RULE recompilation when the underlying tables change
340a345,347
>
> This is like DELETE CASCADE, but truncates.
>
381c388
< * Make row-wise comparisons work per SQL spec
> * %Make row-wise comparisons work per SQL spec
< o Currently the system uses the operating system COPY command to
< create a new database. Add ON COMMIT capability to CREATE TABLE AS
< SELECT
> o Add ON COMMIT capability to CREATE TABLE AS ... SELECT
427c432
< o %Add ALTER DOMAIN TYPE
> o Add ALTER DOMAIN to modify the underlying data type
< o %Disallow dropping of an inherited constraint
< o -Allow objects to be moved to different schemas
> o Add missing object types for ALTER ... SET SCHEMA
< o %Prevent child tables from altering constraints like CHECK that were
< inherited from the parent table
> o %Disallow dropping of an inherited constraint
> o %Prevent child tables from altering or dropping constraints
> like CHECK that were inherited from the parent table
< o Handle references to temporary tables that are created, destroyed,
< then recreated during a session, and EXECUTE is not used
<
< This requires the cached PL/PgSQL byte code to be invalidated when
< an object referenced in the function is changed.
<
< o Add table function support to pltcl, plperl, plpython?
< o Allow PL/pgSQL to name columns by ordinal position, e.g. rec.(3)
> o Add table function support to pltcl, plpython
549a548
> o Allow function argument names to be queries from PL/PgSQL
< o Pass arrays natively instead of as text between plperl and postgres
< o Add support for polymorphic arguments and return types to plperl
> o -Pass arrays natively instead of as text between plperl and postgres
> o Add support for polymorphic arguments and return types to
> languages other than PL/PgSQL
> o Add support for OUT and INOUT parameters to languages other
> than PL/PgSQL
< * Allow libpq to access SQLSTATE so pg_ctl can test for connection failure
<
< This would be used for checking if the server is up.
<
565c563
< * Have initdb set DateStyle based on locale?
> * Have initdb set the input DateStyle (MDY or DMY) based on locale?
567d564
< * Add a schema option to createlang
< o Add pg_dumpall custom format dumps.
<
< This is probably best done by combining pg_dump and pg_dumpall
< into a single binary.
<
> o Add pg_dumpall custom format dumps?
612c605,606
< o Remove unnecessary abstractions in pg_dump source code
> o Remove unnecessary function pointer abstractions in pg_dump source
> code
< * %Remove CREATE CONSTRAINT TRIGGER
<
< This was used in older releases to dump referential integrity
< constraints.
<
682a672,675
> This is particularly important for references to temporary tables
> in PL/PgSQL because PL/PgSQL caches query plans. The only workaround
> in PL/PgSQL is to use EXECUTE.
>
748c741
< * Fetch heap pages matching index entries in sequential order
> * -Fetch heap pages matching index entries in sequential order
797c790
< Currently no only one hash bucket can be stored on a page. Ideally
> Currently only one hash bucket can be stored on a page. Ideally
806a800,802
> o Add WAL logging for crash recovery
> o Allow multi-column hash indexes
>
812a809,812
>
> Ideally this requires a separate test program that can be run
> at initdb time or optionally later.
>
867c867
< * Improve the background writer
> * -Improve the background writer
< For large table adjustements during vacuum, it is faster to reindex
< rather than update the index.
> For large table adjustements during VACUUM FULL, it is faster to
> reindex rather than update the index.
< * Reduce lock time by moving tuples with read lock, then write
< lock and truncate table
> * Reduce lock time during VACUUM FULL by moving tuples with read lock,
> then write lock and truncate table
919c919,920
< o %Suggest VACUUM FULL if a table is nearly empty
> o %Issue log message to suggest VACUUM FULL if a table is nearly
> empty?
995d995
< * Add WAL index reliability improvement to non-btree indexes
1045c1045
< * ANALYZE should record a pg_statistic entry for an all-NULL column
> * -ANALYZE should record a pg_statistic entry for an all-NULL column
1047a1048,1051
> * Allow constraint_elimination to be automatically performed
>
> This requires additional code to reduce the performance loss caused by
> constraint elimination.
1090c1094
< * Remove memory/file descriptor freeing before ereport(ERROR)
> * %Remove memory/file descriptor freeing before ereport(ERROR)
< * Promote debug_query_string into a server-side function current_query()
< * Allow the identifier length to be increased via a configure option
> * %Promote debug_query_string into a server-side function current_query()
> * %Allow the identifier length to be increased via a configure option
1113d1116
< * Fix cross-compiling of time zone database via 'zic'
1130c1133
< o Improve dlerror() reporting string
> o -Improve dlerror() reporting string
1132c1135
< o Add support for Unicode
> o %Add support for Unicode
2005-08-27 02:52:44 +08:00
|
|
|
|
2005-06-24 10:07:19 +08:00
|
|
|
* Add program to test if fsync has a delay compared to non-fsync
|
2008-03-12 04:04:56 +08:00
|
|
|
* Consider sorting writes during checkpoint
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-06/msg00541.php
|
2007-02-03 06:55:08 +08:00
|
|
|
|
1999-07-07 04:41:22 +08:00
|
|
|
|
2008-03-07 01:19:38 +08:00
|
|
|
|
2005-07-05 01:00:32 +08:00
|
|
|
Cache Usage
|
|
|
|
|
===========
|
2005-04-18 22:42:35 +08:00
|
|
|
|
2004-08-01 13:15:58 +08:00
|
|
|
* Speed up COUNT(*)
|
|
|
|
|
|
|
|
|
|
We could use a fixed row count and a +/- count to follow MVCC
|
|
|
|
|
visibility rules, or a single cached value could be used and
|
2005-01-23 04:05:23 +08:00
|
|
|
invalidated if anyone modifies the table. Another idea is to
|
|
|
|
|
get a count directly from a unique index, but for this to be
|
|
|
|
|
faster than a sequential scan it must avoid access to the heap
|
|
|
|
|
to obtain tuple visibility information.
|
|
|
|
|
|
2007-01-17 04:58:38 +08:00
|
|
|
* Provide a way to calculate an "estimated COUNT(*)"
|
|
|
|
|
|
|
|
|
|
Perhaps by using the optimizer's cardinality estimates or random
|
|
|
|
|
sampling.
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2005-11/msg00943.php
|
|
|
|
|
|
2005-01-23 04:05:23 +08:00
|
|
|
* Allow data to be pulled directly from indexes
|
|
|
|
|
|
2007-08-28 11:00:36 +08:00
|
|
|
Currently indexes do not have enough tuple visibility information
|
|
|
|
|
to allow data to be pulled from the index without also accessing
|
|
|
|
|
the heap. One way to allow this is to set a bit on index tuples
|
|
|
|
|
to indicate if a tuple is currently visible to all transactions
|
|
|
|
|
when the first valid heap lookup happens. This bit would have to
|
|
|
|
|
be cleared when a heap tuple is expired.
|
2005-12-02 12:28:19 +08:00
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|
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|
|
|
Another idea is to maintain a bitmap of heap pages where all rows
|
2007-08-28 11:00:36 +08:00
|
|
|
are visible to all backends, and allow index lookups to reference
|
2005-12-02 12:28:19 +08:00
|
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that bitmap to avoid heap lookups, perhaps the same bitmap we might
|
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|
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|
add someday to determine which heap pages need vacuuming. Frequently
|
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|
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|
accessed bitmaps would have to be stored in shared memory. One 8k
|
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|
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|
page of bitmaps could track 512MB of heap pages.
|
2005-07-31 11:08:35 +08:00
|
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|
2007-08-28 11:00:36 +08:00
|
|
|
A third idea would be for a heap scan to check if all rows are visible
|
2008-08-19 11:08:56 +08:00
|
|
|
and if so set a per-table flag which can be checked by index scans.
|
2007-08-28 11:00:36 +08:00
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Any change to the table would have to clear the flag. To detect
|
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|
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changes during the heap scan a counter could be set at the start and
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|
checked at the end --- if it is the same, the table has not been
|
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modified --- any table change would increment the counter.
|
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|
|
|
|
2008-04-11 02:58:15 +08:00
|
|
|
http://archives.postgresql.org/pgsql-patches/2007-10/msg00166.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-patches/2008-01/msg00049.php
|
|
|
|
|
|
Update wording, query -> statement:
< * %Allow pooled connections to list all prepared queries
> * %Allow pooled connections to list all prepared statements
28c28
< the queries prepared in the current session.
> the statements prepared in the current session.
143c143
< o Allow a warm standby system to also allow read-only queries
> o Allow a warm standby system to also allow read-only statements
404c404
< * Add GUC to issue notice about queries that use unjoined tables
> * Add GUC to issue notice about statements that use unjoined tables
490c490
< Another idea would be to allow actual SELECT queries in a COPY.
> Another idea would be to allow actual SELECT statements in a COPY.
554c554
< o Allow function argument names to be queries from PL/PgSQL
> o Allow function argument names to be statements from PL/PgSQL
591c591
< o Improve psql's handling of multi-line queries
> o Improve psql's handling of multi-line statements
< Currently, while \e saves a single query as one entry, interactive
< queries are saved one line at a time. Ideally all queries
> Currently, while \e saves a single statement as one entry, interactive
> statements are saved one line at a time. Ideally all statements
665c665
< o Allow query results to be automatically batched to the client
> o Allow statement results to be automatically batched to the client
667c667
< Currently, all query results are transfered to the libpq
> Currently, all statement results are transfered to the libpq
672c672
< One complexity is that a query like SELECT 1/col could error
> One complexity is that a statement like SELECT 1/col could error
739c739
< * Allow queries across databases or servers with transaction
> * Allow statements across databases or servers with transaction
< inheritance, allow it to work for UPDATE and DELETE queries, and allow
< it to be used for all queries with little performance impact
> inheritance, allow it to work for UPDATE and DELETE statements, and allow
> it to be used for all statements with little performance impact
876c876
< * Consider automatic caching of queries at various levels:
> * Consider automatic caching of statements at various levels:
947c947
< a single session using multiple threads to execute a query faster.
> a single session using multiple threads to execute a statement faster.
1025c1025
< * Log queries where the optimizer row estimates were dramatically
> * Log statements where the optimizer row estimates were dramatically
1146c1146
< of result sets using new query protocol
> of result sets using new statement protocol
2005-12-12 21:36:36 +08:00
|
|
|
* Consider automatic caching of statements at various levels:
|
2008-08-19 11:08:56 +08:00
|
|
|
parsed query tree, query execution plan, query results
|
2005-07-31 11:08:35 +08:00
|
|
|
|
2008-08-19 11:08:56 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-04/msg00823.php
|
2004-09-27 22:17:51 +08:00
|
|
|
|
2006-06-15 06:31:53 +08:00
|
|
|
* Consider increasing internal areas when shared buffers is increased
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2005-10/msg01419.php
|
|
|
|
|
|
2007-02-21 07:39:03 +08:00
|
|
|
* Consider decreasing the amount of memory used by PrivateRefCount
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-11/msg00797.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-01/msg00752.php
|
|
|
|
|
|
2008-03-08 04:01:24 +08:00
|
|
|
* Consider allowing higher priority queries to have referenced buffer
|
|
|
|
|
cache pages stay in memory longer
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-11/msg00562.php
|
|
|
|
|
|
2007-02-21 07:39:03 +08:00
|
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|
2005-07-04 20:32:38 +08:00
|
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|
|
2002-04-26 04:20:50 +08:00
|
|
|
Vacuum
|
|
|
|
|
======
|
2001-03-01 02:07:15 +08:00
|
|
|
|
2004-08-01 13:15:58 +08:00
|
|
|
* Improve speed with indexes
|
|
|
|
|
|
2007-04-03 06:49:03 +08:00
|
|
|
For large table adjustments during VACUUM FULL, it is faster to cluster
|
|
|
|
|
or reindex rather than update the index. Also, index updates can bloat
|
|
|
|
|
the index.
|
2007-07-17 08:07:54 +08:00
|
|
|
|
2007-04-03 06:49:03 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-03/msg00024.php
|
2007-05-31 03:07:20 +08:00
|
|
|
http://archives.postgresql.org/pgsql-performance/2007-05/msg00296.php
|
2008-03-12 09:48:08 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-08/msg00307.php
|
2004-08-01 13:15:58 +08:00
|
|
|
|
2005-06-18 03:20:27 +08:00
|
|
|
* Auto-fill the free space map by scanning the buffer cache or by
|
|
|
|
|
checking pages written by the background writer
|
2006-06-17 02:37:31 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-02/msg01125.php
|
2006-06-17 02:38:39 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-03/msg00011.php
|
2006-06-17 02:37:31 +08:00
|
|
|
|
2005-06-17 10:20:43 +08:00
|
|
|
* Create a bitmap of pages that need vacuuming
|
|
|
|
|
|
|
|
|
|
Instead of sequentially scanning the entire table, have the background
|
|
|
|
|
writer or some other process record pages that have expired rows, then
|
|
|
|
|
VACUUM can look at just those pages rather than the entire table. In
|
|
|
|
|
the event of a system crash, the bitmap would probably be invalidated.
|
2005-09-02 08:49:57 +08:00
|
|
|
One complexity is that index entries still have to be vacuumed, and
|
|
|
|
|
doing this without an index scan (by using the heap values to find the
|
|
|
|
|
index entry) might be slow and unreliable, especially for user-defined
|
|
|
|
|
index functions.
|
2005-06-17 10:20:43 +08:00
|
|
|
|
2007-01-21 07:08:20 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-12/msg01188.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-01/msg00121.php
|
2008-04-12 03:14:57 +08:00
|
|
|
http://archives.postgresql.org/pgsql-patches/2007-03/msg00508.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-patches/2007-04/msg00347.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-11/msg00156.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-03/msg00546.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-04/msg00416.php
|
2007-01-21 07:08:20 +08:00
|
|
|
|
2006-03-03 11:13:04 +08:00
|
|
|
* Allow FSM to return free space toward the beginning of the heap file,
|
|
|
|
|
in hopes that empty pages at the end can be truncated by VACUUM
|
2006-03-04 13:02:03 +08:00
|
|
|
* Allow FSM page return free space based on table clustering, to assist
|
|
|
|
|
in maintaining clustering?
|
2008-05-13 04:50:52 +08:00
|
|
|
* -Improve dead row detection during multi-statement transactions usage
|
2007-03-27 07:47:53 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-patches/2007-03/msg00358.php
|
|
|
|
|
|
2008-03-12 02:05:10 +08:00
|
|
|
* Consider a more compact data representation for dead tuples
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-patches/2007-05/msg00143.php
|
|
|
|
|
|
2008-03-08 04:22:25 +08:00
|
|
|
|
2004-11-29 10:29:28 +08:00
|
|
|
* Auto-vacuum
|
2005-07-05 01:43:42 +08:00
|
|
|
|
Great TODO updates from Tom:
< Currently SIGTERM of a backend can lead to lock table corruption.
> Lock table corruption following SIGTERM of an individual backend
> has been reported in 8.0. A possible cause was fixed in 8.1, but
> it is unknown whether other problems exist. This item mostly
> requires additional testing rather than of writing any new code.
< o Allow postgresql.conf values to be set so they can not be changed
< by the user
166c167,171
< * %Remove Money type, add money formatting for decimal type
> * Improve the MONEY data type
>
> Change the MONEY data type to use DECIMAL internally, with special
> locale-aware output formatting.
>
225c230
< o %Allow MIN()/MAX() on arrays
> o -Allow MIN()/MAX() on arrays
228c233
< o Modify array literal representation to handle array index lower bound
> o -Modify array literal representation to handle array index lower bound
235a241
> o Auto-delete large objects when referencing row is deleted
< Currently large objects entries do not have owners. Permissions can
< only be set at the pg_largeobject table level.
> /contrib/lo offers this functionality.
240d244
< o Auto-delete large objects when referencing row is deleted
< * %Have views on temporary tables exist in the temporary namespace
< * Allow temporary views on non-temporary tables
< * %Allow RULE recompilation
> * -Have views on temporary tables exist in the temporary namespace
> * -Allow temporary views on non-temporary tables
> * Allow VIEW/RULE recompilation when the underlying tables change
340a345,347
>
> This is like DELETE CASCADE, but truncates.
>
381c388
< * Make row-wise comparisons work per SQL spec
> * %Make row-wise comparisons work per SQL spec
< o Currently the system uses the operating system COPY command to
< create a new database. Add ON COMMIT capability to CREATE TABLE AS
< SELECT
> o Add ON COMMIT capability to CREATE TABLE AS ... SELECT
427c432
< o %Add ALTER DOMAIN TYPE
> o Add ALTER DOMAIN to modify the underlying data type
< o %Disallow dropping of an inherited constraint
< o -Allow objects to be moved to different schemas
> o Add missing object types for ALTER ... SET SCHEMA
< o %Prevent child tables from altering constraints like CHECK that were
< inherited from the parent table
> o %Disallow dropping of an inherited constraint
> o %Prevent child tables from altering or dropping constraints
> like CHECK that were inherited from the parent table
< o Handle references to temporary tables that are created, destroyed,
< then recreated during a session, and EXECUTE is not used
<
< This requires the cached PL/PgSQL byte code to be invalidated when
< an object referenced in the function is changed.
<
< o Add table function support to pltcl, plperl, plpython?
< o Allow PL/pgSQL to name columns by ordinal position, e.g. rec.(3)
> o Add table function support to pltcl, plpython
549a548
> o Allow function argument names to be queries from PL/PgSQL
< o Pass arrays natively instead of as text between plperl and postgres
< o Add support for polymorphic arguments and return types to plperl
> o -Pass arrays natively instead of as text between plperl and postgres
> o Add support for polymorphic arguments and return types to
> languages other than PL/PgSQL
> o Add support for OUT and INOUT parameters to languages other
> than PL/PgSQL
< * Allow libpq to access SQLSTATE so pg_ctl can test for connection failure
<
< This would be used for checking if the server is up.
<
565c563
< * Have initdb set DateStyle based on locale?
> * Have initdb set the input DateStyle (MDY or DMY) based on locale?
567d564
< * Add a schema option to createlang
< o Add pg_dumpall custom format dumps.
<
< This is probably best done by combining pg_dump and pg_dumpall
< into a single binary.
<
> o Add pg_dumpall custom format dumps?
612c605,606
< o Remove unnecessary abstractions in pg_dump source code
> o Remove unnecessary function pointer abstractions in pg_dump source
> code
< * %Remove CREATE CONSTRAINT TRIGGER
<
< This was used in older releases to dump referential integrity
< constraints.
<
682a672,675
> This is particularly important for references to temporary tables
> in PL/PgSQL because PL/PgSQL caches query plans. The only workaround
> in PL/PgSQL is to use EXECUTE.
>
748c741
< * Fetch heap pages matching index entries in sequential order
> * -Fetch heap pages matching index entries in sequential order
797c790
< Currently no only one hash bucket can be stored on a page. Ideally
> Currently only one hash bucket can be stored on a page. Ideally
806a800,802
> o Add WAL logging for crash recovery
> o Allow multi-column hash indexes
>
812a809,812
>
> Ideally this requires a separate test program that can be run
> at initdb time or optionally later.
>
867c867
< * Improve the background writer
> * -Improve the background writer
< For large table adjustements during vacuum, it is faster to reindex
< rather than update the index.
> For large table adjustements during VACUUM FULL, it is faster to
> reindex rather than update the index.
< * Reduce lock time by moving tuples with read lock, then write
< lock and truncate table
> * Reduce lock time during VACUUM FULL by moving tuples with read lock,
> then write lock and truncate table
919c919,920
< o %Suggest VACUUM FULL if a table is nearly empty
> o %Issue log message to suggest VACUUM FULL if a table is nearly
> empty?
995d995
< * Add WAL index reliability improvement to non-btree indexes
1045c1045
< * ANALYZE should record a pg_statistic entry for an all-NULL column
> * -ANALYZE should record a pg_statistic entry for an all-NULL column
1047a1048,1051
> * Allow constraint_elimination to be automatically performed
>
> This requires additional code to reduce the performance loss caused by
> constraint elimination.
1090c1094
< * Remove memory/file descriptor freeing before ereport(ERROR)
> * %Remove memory/file descriptor freeing before ereport(ERROR)
< * Promote debug_query_string into a server-side function current_query()
< * Allow the identifier length to be increased via a configure option
> * %Promote debug_query_string into a server-side function current_query()
> * %Allow the identifier length to be increased via a configure option
1113d1116
< * Fix cross-compiling of time zone database via 'zic'
1130c1133
< o Improve dlerror() reporting string
> o -Improve dlerror() reporting string
1132c1135
< o Add support for Unicode
> o %Add support for Unicode
2005-08-27 02:52:44 +08:00
|
|
|
o %Issue log message to suggest VACUUM FULL if a table is nearly
|
|
|
|
|
empty?
|
2007-01-20 05:36:07 +08:00
|
|
|
o Improve control of auto-vacuum
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-12/msg00876.php
|
2006-09-03 06:59:00 +08:00
|
|
|
|
2008-08-19 11:08:56 +08:00
|
|
|
o -Prevent long-lived temporary tables from causing frozen-xid
|
2007-09-15 03:02:46 +08:00
|
|
|
advancement starvation
|
|
|
|
|
|
Update TODO list based on 8.3 completed items:
< * Allow major upgrades without dump/reload, perhaps using pg_upgrade
< [pg_upgrade]
< * Check for unreferenced table files created by transactions that were
< in-progress when the server terminated abruptly
<
< http://archives.postgresql.org/pgsql-patches/2006-06/msg00096.php
<
> * Check for unreferenced table files created by transactions that were
> in-progress when the server terminated abruptly
>
> http://archives.postgresql.org/pgsql-patches/2006-06/msg00096.php
>
< * Support table partitioning that allows a single table to be stored
< in subtables that are partitioned based on the primary key or a WHERE
< clause
< creation of rules for INSERT/UPDATE/DELETE, and constraints for
< rapid partition selection. Options could include range and hash
> creation of triggers or rules for INSERT/UPDATE/DELETE, and constraints
> for rapid partition selection. Options could include range and hash
<
< * Improve replication solutions
<
< o Load balancing
<
< You can use any of the master/slave replication servers to use a
< standby server for data warehousing. To allow read/write queries to
< multiple servers, you need multi-master replication like pgcluster.
<
< o Allow replication over unreliable or non-persistent links
<
<
< o Mark change-on-restart-only values in postgresql.conf
< All objects in the default database tablespace must have default
< tablespace specifications. This is because new databases are
< created by copying directories. If you mix default tablespace
< tables and tablespace-specified tables in the same directory,
< creating a new database from such a mixed directory would create a
< new database with tables that had incorrect explicit tablespaces.
< To fix this would require modifying pg_class in the newly copied
< database, which we don't currently do.
> Currently all objects in the default database tablespace must
> have default tablespace specifications. This is because new
> databases are created by copying directories. If you mix default
> tablespace tables and tablespace-specified tables in the same
> directory, creating a new database from such a mixed directory
> would create a new database with tables that had incorrect
> explicit tablespaces. To fix this would require modifying
> pg_class in the newly copied database, which we don't currently
> do.
<
< o Allow recovery.conf to allow the same syntax as
> o Allow recovery.conf to support the same syntax as
< * Allow user-defined types to specify a type modifier at table creation
< time
< * Allow all data types to cast to and from TEXT
<
< http://archives.postgresql.org/pgsql-hackers/2007-04/msg00017.php
<
<
< o Add support for year-month syntax, INTERVAL '50-6' YEAR TO MONTH
< o Interpret INTERVAL '1 year' MONTH as CAST (INTERVAL '1 year' AS
< INTERVAL MONTH), and this should return '12 months'
> o Add support for year-month syntax, INTERVAL '50-6' YEAR
> TO MONTH
> o Interpret INTERVAL '1 year' MONTH as CAST (INTERVAL '1
> year' AS INTERVAL MONTH), and this should return '12 months'
< * Allow MONEY to be cast to/from other numeric data types
> * Allow MONEY to be easily cast to/from other numeric data types
>
< * Allow functions to have a schema search path specified at creation time
< * Fix cases where invalid byte encodings are accepted by the database,
< but throw an error on SELECT
<
< http://archives.postgresql.org/pgsql-hackers/2007-03/msg00767.php
< * Improve logging of prepared statements recovered during startup
> * Improve logging of prepared transactions recovered during startup
< * Make standard_conforming_strings the default in 8.4?
> * Make standard_conforming_strings the default in 8.5?
< * Allow the count returned by SELECT, etc to be to represent as an int64
> * Allow the count returned by SELECT, etc to be represented as an int64
< o Use more reliable method for CREATE DATABASE to get a consistent
< copy of db?
< o Fix transaction restriction checks for CREATE DATABASE and
< other commands
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00133.php
< currently allowed.
> currently allowed. This currently is done if the table is
> created inside the same transaction block as the COPY because
> no other backends can see the table.
< o Add SET PATH for schemas?
<
< This is basically the same as SET search_path.
< o Enforce referential integrity for system tables
< o Add Oracle-style packages (Pavel)
<
< A package would be a schema with session-local variables,
< public/private functions, and initialization functions. It
< is also possible to implement these capabilities
< in all schemas and not use a separate "packages"
< syntax at all.
<
< http://archives.postgresql.org/pgsql-hackers/2006-08/msg00384.php
<
< o Add single-step debugging of functions
< o Allow RETURN to return row or record functions
<
< http://archives.postgresql.org/pgsql-patches/2005-11/msg00045.php
< http://archives.postgresql.org/pgsql-patches/2006-08/msg00397.php
< http://archives.postgresql.org/pgsql-hackers/2006-09/msg00388.php
<
< o Fix problems with RETURN NEXT on tables with
< dropped/added columns after function creation
<
< http://archives.postgresql.org/pgsql-patches/2006-02/msg00165.php
<
< * Make consistent use of long/short command options --- pg_ctl needs
< long ones, pg_config doesn't have short ones, postgres doesn't have
< enough long ones, etc.
<
<
<
< o Consider parsing the -c string into individual queries so each
< is run in its own transaction
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00291.php
<
<
< o Remove unnecessary function pointer abstractions in pg_dump source
< code
> o Remove unnecessary function pointer abstractions in pg_dump source
> code
<
<
< o Fix SSL retry to avoid useless repeated connection attempts and
< ensuing misleading error messages
>
<
< This is difficult because it requires datatype-specific knowledge.
<
< * Improve commit_delay handling to reduce fsync()
< * %Add an option to sync() before fsync()'ing checkpoint files
>
< * Reduce lock time during VACUUM FULL by moving tuples with read lock,
< then write lock and truncate table
<
< Moved tuples are invisible to other backends so they don't require a
< write lock. However, the read lock promotion to write lock could lead
< to deadlock situations.
<
< * Prevent long-lived temporary tables from causing frozen-xid advancement
< starvation
<
< The problem is that autovacuum cannot vacuum them to set frozen xids;
< only the session that created them can do that.
<
<
<
< o Use free-space map information to guide refilling
< o Consider logging activity either to the logs or a system view
> The problem is that autovacuum cannot vacuum them to set frozen xids;
> only the session that created them can do that.
< * Add connection pooling
<
< It is unclear if this should be done inside the backend code or done
< by something external like pgpool. The passing of file descriptors to
< existing backends is one of the difficulties with a backend approach.
<
< * Consider reducing memory used for shared buffer reference count
<
< http://archives.postgresql.org/pgsql-hackers/2007-01/msg00752.php
<
< * %Remove memory/file descriptor freeing before ereport(ERROR)
< * %Promote debug_query_string into a server-side function current_query()
< * Allow ecpg to work with MSVC and BCC
< * Add xpath_array() to /contrib/xml2 to return results as an array
< * Allow building in directories containing spaces
<
< This is probably not possible because 'gmake' and other compiler tools
< do not fully support quoting of paths with spaces.
<
< * Fix sgmltools so PDFs can be generated with bookmarks
< * Split out libpq pgpass and environment documentation sections to make
< it easier for non-developers to find
< * Use strlcpy() rather than our StrNCpy() macro
<
< http://archives.postgresql.org/pgsql-hackers/2006-09/msg02108.php
<
< o Re-enable timezone output on log_line_prefix '%t' when a
< shorter timezone string is available
< * Allow statements across databases or servers with transaction
< semantics
<
< This can be done using dblink and two-phase commit.
> * Add Oracle-style packages (Pavel)
< * Add the features of packages
> A package would be a schema with session-local variables,
> public/private functions, and initialization functions. It
> is also possible to implement these capabilities
> in any schema and not use a separate "packages"
> syntax at all.
< o Make private objects accessible only to objects in the same schema
< o Allow current_schema.objname to access current schema objects
< o Add session variables
< o Allow nested schemas
> http://archives.postgresql.org/pgsql-hackers/2006-08/msg00384.php
2007-12-30 11:22:53 +08:00
|
|
|
The problem is that autovacuum cannot vacuum them to set frozen xids;
|
|
|
|
|
only the session that created them can do that.
|
2007-09-15 03:02:46 +08:00
|
|
|
http://archives.postgresql.org/pgsql-general/2007-06/msg01645.php
|
|
|
|
|
|
2008-03-08 03:03:39 +08:00
|
|
|
o Store per-table autovacuum settings in pg_class.reloptions.
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-02/msg01440.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-01/msg00724.php
|
2005-04-18 22:42:35 +08:00
|
|
|
|
2008-03-08 04:22:25 +08:00
|
|
|
o Prevent autovacuum from running if an old transaction is still
|
|
|
|
|
running from the last vacuum
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-11/msg00899.php
|
|
|
|
|
|
|
|
|
|
|
2008-03-07 01:19:38 +08:00
|
|
|
|
2002-04-26 04:20:50 +08:00
|
|
|
Locking
|
|
|
|
|
=======
|
2002-01-23 04:50:35 +08:00
|
|
|
|
2008-08-19 11:08:56 +08:00
|
|
|
* Fix priority ordering of read and write light-weight locks
|
2002-01-23 04:50:35 +08:00
|
|
|
|
2007-01-17 04:58:38 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2004-11/msg00893.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2004-11/msg00905.php
|
|
|
|
|
|
2007-02-01 12:35:52 +08:00
|
|
|
* Fix problem when multiple subtransactions of the same outer transaction
|
|
|
|
|
hold different types of locks, and one subtransaction aborts
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-11/msg01011.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-12/msg00001.php
|
2007-02-09 11:39:39 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-02/msg00435.php
|
2008-03-12 02:01:04 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-05/msg00773.php
|
2002-02-04 03:24:30 +08:00
|
|
|
|
2007-02-20 04:41:40 +08:00
|
|
|
* Allow UPDATEs on only non-referential integrity columns not to conflict
|
|
|
|
|
with referential integrity locks
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-02/msg00073.php
|
2007-02-09 11:39:59 +08:00
|
|
|
|
2007-04-03 12:12:00 +08:00
|
|
|
* Add idle_in_transaction_timeout GUC so locks are not held for long
|
2007-04-03 10:17:11 +08:00
|
|
|
periods of time
|
2007-04-03 09:21:06 +08:00
|
|
|
|
2008-02-01 10:41:10 +08:00
|
|
|
* Improve deadlock detection when a page cleaning lock conflicts
|
|
|
|
|
with a shared buffer that is pinned
|
2008-01-31 23:05:09 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-bugs/2008-01/msg00138.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-01/msg00873.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-committers/2008-01/msg00365.php
|
|
|
|
|
|
2008-03-25 10:38:34 +08:00
|
|
|
* Detect deadlocks involving LockBufferForCleanup()
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-01/msg00873.php
|
2007-02-20 04:42:33 +08:00
|
|
|
|
|
|
|
|
|
2008-03-07 01:19:38 +08:00
|
|
|
|
2005-07-05 01:00:32 +08:00
|
|
|
Startup Time Improvements
|
|
|
|
|
=========================
|
1999-07-07 04:41:22 +08:00
|
|
|
|
2008-04-19 20:16:21 +08:00
|
|
|
* Experiment with multi-threaded backend for backend creation
|
2004-08-01 13:15:58 +08:00
|
|
|
|
|
|
|
|
This would prevent the overhead associated with process creation. Most
|
|
|
|
|
operating systems have trivial process creation time compared to
|
2005-12-17 02:44:07 +08:00
|
|
|
database startup overhead, but a few operating systems (Win32,
|
2005-04-24 05:39:27 +08:00
|
|
|
Solaris) might benefit from threading. Also explore the idea of
|
Update wording, query -> statement:
< * %Allow pooled connections to list all prepared queries
> * %Allow pooled connections to list all prepared statements
28c28
< the queries prepared in the current session.
> the statements prepared in the current session.
143c143
< o Allow a warm standby system to also allow read-only queries
> o Allow a warm standby system to also allow read-only statements
404c404
< * Add GUC to issue notice about queries that use unjoined tables
> * Add GUC to issue notice about statements that use unjoined tables
490c490
< Another idea would be to allow actual SELECT queries in a COPY.
> Another idea would be to allow actual SELECT statements in a COPY.
554c554
< o Allow function argument names to be queries from PL/PgSQL
> o Allow function argument names to be statements from PL/PgSQL
591c591
< o Improve psql's handling of multi-line queries
> o Improve psql's handling of multi-line statements
< Currently, while \e saves a single query as one entry, interactive
< queries are saved one line at a time. Ideally all queries
> Currently, while \e saves a single statement as one entry, interactive
> statements are saved one line at a time. Ideally all statements
665c665
< o Allow query results to be automatically batched to the client
> o Allow statement results to be automatically batched to the client
667c667
< Currently, all query results are transfered to the libpq
> Currently, all statement results are transfered to the libpq
672c672
< One complexity is that a query like SELECT 1/col could error
> One complexity is that a statement like SELECT 1/col could error
739c739
< * Allow queries across databases or servers with transaction
> * Allow statements across databases or servers with transaction
< inheritance, allow it to work for UPDATE and DELETE queries, and allow
< it to be used for all queries with little performance impact
> inheritance, allow it to work for UPDATE and DELETE statements, and allow
> it to be used for all statements with little performance impact
876c876
< * Consider automatic caching of queries at various levels:
> * Consider automatic caching of statements at various levels:
947c947
< a single session using multiple threads to execute a query faster.
> a single session using multiple threads to execute a statement faster.
1025c1025
< * Log queries where the optimizer row estimates were dramatically
> * Log statements where the optimizer row estimates were dramatically
1146c1146
< of result sets using new query protocol
> of result sets using new statement protocol
2005-12-12 21:36:36 +08:00
|
|
|
a single session using multiple threads to execute a statement faster.
|
2004-08-01 13:15:58 +08:00
|
|
|
|
2002-01-23 04:50:35 +08:00
|
|
|
|
2008-03-07 01:19:38 +08:00
|
|
|
|
2002-04-26 04:20:50 +08:00
|
|
|
Write-Ahead Log
|
|
|
|
|
===============
|
2002-01-23 04:50:35 +08:00
|
|
|
|
2008-04-19 20:16:21 +08:00
|
|
|
* Eliminate need to write full pages to WAL before page modification
|
2004-08-01 13:15:58 +08:00
|
|
|
|
2005-07-04 12:06:43 +08:00
|
|
|
Currently, to protect against partial disk page writes, we write
|
2004-08-01 13:15:58 +08:00
|
|
|
full page images to WAL before they are modified so we can correct any
|
2004-08-24 05:56:50 +08:00
|
|
|
partial page writes during recovery. These pages can also be
|
|
|
|
|
eliminated from point-in-time archive files.
|
2008-04-19 20:16:21 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2002-06/msg00655.php
|
2004-08-01 13:15:58 +08:00
|
|
|
|
2005-07-07 23:18:26 +08:00
|
|
|
o When off, write CRC to WAL and check file system blocks
|
|
|
|
|
on recovery
|
2005-07-30 00:05:28 +08:00
|
|
|
|
|
|
|
|
If CRC check fails during recovery, remember the page in case
|
|
|
|
|
a later CRC for that page properly matches.
|
|
|
|
|
|
2005-07-07 23:18:26 +08:00
|
|
|
o Write full pages during file system write and not when
|
|
|
|
|
the page is modified in the buffer cache
|
|
|
|
|
|
|
|
|
|
This allows most full page writes to happen in the background
|
2005-07-08 00:02:06 +08:00
|
|
|
writer. It might cause problems for applying WAL on recovery
|
|
|
|
|
into a partially-written page, but later the full page will be
|
|
|
|
|
replaced from WAL.
|
2005-07-07 23:18:26 +08:00
|
|
|
|
2005-09-20 10:21:29 +08:00
|
|
|
* Allow WAL traffic to be streamed to another server for stand-by
|
2005-09-20 08:11:00 +08:00
|
|
|
replication
|
2004-08-01 13:15:58 +08:00
|
|
|
* Reduce WAL traffic so only modified values are written rather than
|
2007-04-05 10:08:53 +08:00
|
|
|
entire rows
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-03/msg01589.php
|
|
|
|
|
|
2006-06-03 10:34:35 +08:00
|
|
|
* Allow WAL information to recover corrupted pg_controldata
|
2006-06-03 12:00:01 +08:00
|
|
|
|
2006-06-09 00:07:23 +08:00
|
|
|
http://archives.postgresql.org/pgsql-patches/2006-06/msg00025.php
|
2006-06-03 12:00:01 +08:00
|
|
|
|
2003-05-24 23:33:46 +08:00
|
|
|
* Find a way to reduce rotational delay when repeatedly writing
|
|
|
|
|
last WAL page
|
Cleaups:
< * Allow GRANT/REVOKE permissions to be given to all schema objects with one
> * Allow GRANT/REVOKE permissions to be applied to all schema objects with one
60c60
< specifications. This is because new databases are created by copying
> specifications. This is because new databases are created by copying
63c63
< directory would create a new database with tables that had incorrect
> directory would create a new database with tables that had incorrect
72c72
<
>
85c85
< By not showing commented-out variables, we discourage people from
> By not showing commented-out variables, we discourage people from
91c91
< * Allow point-in-time recovery to archive partially filled write-ahead
> * Allow point-in-time recovery to archive partially filled write-ahead
102c102
< Currently all schemas are owned by the super-user because they are
> Currently all schemas are owned by the super-user because they are
128c128
< * Allow INET subnet tests with non-constants to be indexed
> * Allow INET subnet tests using non-constants to be indexed
143,144c143,144
< * Allow to_char to print localized month names
< * Allow functions to have a search path specified at creation time
> * Allow to_char() to print localized month names
> * Allow functions to have a schema search path specified at creation time
146c146
< * Add GUC variable to allow output of interval values in ISO8601 format
> * Add a GUC variable to allow output of interval values in ISO8601 format
154,155c154,155
< * Prevent inet cast to cidr if the unmasked bits are not zero, or
< zero bits
> * Prevent INET cast to CIDR if the unmasked bits are not zero, or
> zero the bits
158c158
< o Allow nulls in arrays
> o Allow NULLs in arrays
160,161c160,161
< o Delay resolution of array expression type so assignment coercion
< can be performed on empty array expressions
> o Delay resolution of array expression's data type so assignment
> coercion can be performed on empty array expressions
218,219c218,219
< key, foreign key [inheritance]
< * UNIQUE INDEX on base column not honored on inserts/updates from
> key, foreign key
> * UNIQUE INDEX on base column not honored on INSERTs/UPDATEs from
221c221
< (dup) should fail [inheritance]
> (dup) should fail
246c246
< * Fetch heap pages matching index entries in sequential order [performance]
> * Fetch heap pages matching index entries in sequential order
307c307
< functionality in DELETE. It's been agreed that the keyword should
> functionality in DELETE. It's been agreed that the keyword should
318c318
< * Allow PREPARE to automatically determine parameter types based on the SQL
> * Allow PREPARE to automatically determine parameter types based on the SQL
340,342d339
< * Allow CREATE TABLE foo (f1 INT CHECK (f1 > 0) CHECK (f1 < 10)) to work
< by searching for non-conflicting constraint names, and prefix with
< table name?
347c344
< new database.
> a new database.
350,351d346
< * Ignore temporary tables from other sessions when processing
< inheritance?
354,355c349,351
< * Add a session mode to warn about non-standard SQL usage in queries
< * Add MERGE command that does UPDATE/DELETE, or on failure, INSERT (rules, triggers?)
> * Add a GUC variable to warn about non-standard SQL usage in queries
> * Add MERGE command that does UPDATE/DELETE, or on failure, INSERT (rules,
> triggers?)
357,359c353,356
< * Add NOVICE output level for helpful messages like automatic sequence/index creation
< * Add COMMENT ON for all cluster global objects (users, groups,
< databases and tablespaces)
> * Add NOVICE output level for helpful messages like automatic sequence/index
> creation
> * Add COMMENT ON for all cluster global objects (users, groups, databases
> and tablespaces)
363c360
< When enabled, this would allow errors in multi-statement transactions
> When enabled, this would allow errors in multi-statement transactions
417c414
< o Allow COPY to optionally include column headings as the first line
> o Allow COPY to optionally include column headings in the first line
450c447
<
>
462c459
< o Handle references to temporary tables that are created, destroyed,
> o Handle references to temporary tables that are created, destroyed,
464c461
<
>
469d465
< o Improve PL/PgSQL exception handling using savepoints
488c484
<
>
503d498
<
518c513
< o Add pg_dumpall custom format dumps.
> o Add pg_dumpall custom format dumps.
520c515
< This is probably best done by combining pg_dump and pg_dumpall
> This is probably best done by combining pg_dump and pg_dumpall
532d526
< o Improve error handling (?)
555c549
< Adding shared locks requires recording the table/rows numbers in a
> Adding shared locks requires recording the table/rows numbers in a
643c637
< Posix_fadvise() can control both sequential/random file caching and
> Posix_fadvise() can control both sequential/random file caching and
703c697
< from distributted.net, http://www1.distributed.net/source,
> from distributted.net, http://www1.distributed.net/source,
729c723
< * Add connection pooling [pool]
> * Add connection pooling
755d748
<
759c752
<
>
768c761
< so an abrupt operating system restart might lose a few seconds of
> so an abrupt operating system restart might lose a few seconds of
785c778
< * Add utility to compute accurate random_page_cost value
> * Create utility to compute accurate random_page_cost value
787,789d779
< * Allow sorting, temp files, temp tables to use multiple work directories
<
< This allows the I/O load to be spread across multiple disk drives.
795a786
>
808,809c799,800
<
< * Use mmap() rather than SYSV shared memory or to write WAL files (?) [mmap]
>
> * Use mmap() rather than SYSV shared memory or to write WAL files (?)
812,813c803,804
< portability issues. Anonymous mmap (or mmap to /dev/zero) is required
< to prevent I/O overhead.
> portability issues. Anonymous mmap (or mmap to /dev/zero) is required
> to prevent I/O overhead.
817,819c808,810
< Doing I/O to large tables would consume a lot of address space or
< require frequent mapping/unmapping. Extending the file also causes
< mapping problems that might require mapping only individual pages,
> Doing I/O to large tables would consume a lot of address space or
> require frequent mapping/unmapping. Extending the file also causes
> mapping problems that might require mapping only individual pages,
821c812
< way to _prevent_ I/O to disk from the dirty shared buffers so changes
> way to _prevent_ I/O to disk from the dirty shared buffers so changes
826c817
< tuple overhead
> per-tuple overhead
829,831c820,822
< This would involve using multiple threads or processes to do optimization,
< sorting, or execution of single query. The major advantage of such a
< feature would be to allow multiple CPUs to work together to process a
> This would involve using multiple threads or processes to do optimization,
> sorting, or execution of single query. The major advantage of such a
> feature would be to allow multiple CPUs to work together to process a
834c825
< * Research the use of larger pages sizes
> * Research the use of larger page sizes
842a834
> * Move some /contrib modules out to their own project sites
845d836
< * Improve access-permissions check on data directory in Cygwin (Tom)
847,848c838
< * Clarify use of 'application' and 'command' tags in SGML docs
< * Better document ability to build only certain interfaces (Marc)
> * Improve documentation to build only interfaces (Marc)
852,853d841
< * Research interaction of setitimer() and sleep() used by statement_timeout
< * Rename /scripts directory because they are all C programs now
856,857d843
< * Allow binaries to be statically linked so they are more easily relocated
< * Move some /contrib modules out to their own project sites
862c848
< o Remove per-backend parameter file and move into shared memory?
> o Remove per-backend parameter file and move into shared memory
877,878c863,864
< o Update clients to use data types, typmod, schema.table.column names of
< result sets using new query protocol
> o Update clients to use data types, typmod, schema.table.column names
> of result sets using new query protocol
900d885
< * Kris is Kris Jurka
910c895
< * Simon is Simon Riggs
> * Simon is Simon Riggs <simon@2ndquadrant.com>
913d897
< * Teodor is
2004-11-11 11:59:14 +08:00
|
|
|
|
2004-08-01 13:15:58 +08:00
|
|
|
Currently fsync of WAL requires the disk platter to perform a full
|
|
|
|
|
rotation to fsync again. One idea is to write the WAL to different
|
|
|
|
|
offsets that might reduce the rotational delay.
|
2008-04-19 20:16:21 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2002-11/msg00483.php
|
2002-02-04 03:24:30 +08:00
|
|
|
|
Split up wal-logging items:
< * Allow control over which tables are WAL-logged [walcontrol]
> * Allow WAL logging to be turned off for a table, but the table
> might be dropped or truncated during crash recovery [walcontrol]
< commit. To do this, only a single writer can modify the table, and
< writes must happen only on new pages. Readers can continue accessing
< the table. This would affect COPY, and perhaps INSERT/UPDATE too.
< Another option is to avoid transaction logging entirely and truncate
< or drop the table on crash recovery. These should be implemented
< using ALTER TABLE, e.g. ALTER TABLE PERSISTENCE [ DROP | TRUNCATE |
< STABLE | DEFAULT ]. Tables using non-default logging should not use
< referential integrity with default-logging tables, and tables using
< stable logging probably can not have indexes. One complexity is
< the handling of indexes on TOAST tables.
> commit. This should be implemented using ALTER TABLE, e.g. ALTER
> TABLE PERSISTENCE [ DROP | TRUNCATE | DEFAULT ]. Tables using
> non-default logging should not use referential integrity with
> default-logging tables. A table without dirty buffers during a
> crash could perhaps avoid the drop/truncate.
>
> * Allow WAL logging to be turned off for a table, but the table would
> avoid being truncated/dropped [walcontrol]
>
> To do this, only a single writer can modify the table, and writes
> must happen only on new pages so the new pages can be removed during
> crash recovery. Readers can continue accessing the table. Such
> tables probably cannot have indexes. One complexity is the handling
> of indexes on TOAST tables.
2006-02-07 10:08:08 +08:00
|
|
|
* Allow WAL logging to be turned off for a table, but the table
|
2008-04-19 20:16:21 +08:00
|
|
|
might be dropped or truncated during crash recovery
|
2006-01-06 00:23:48 +08:00
|
|
|
|
|
|
|
|
Allow tables to bypass WAL writes and just fsync() dirty pages on
|
2007-08-28 11:00:36 +08:00
|
|
|
commit. This should be implemented using ALTER TABLE, e.g. ALTER
|
|
|
|
|
TABLE PERSISTENCE [ DROP | TRUNCATE | DEFAULT ]. Tables using
|
|
|
|
|
non-default logging should not use referential integrity with
|
Split up wal-logging items:
< * Allow control over which tables are WAL-logged [walcontrol]
> * Allow WAL logging to be turned off for a table, but the table
> might be dropped or truncated during crash recovery [walcontrol]
< commit. To do this, only a single writer can modify the table, and
< writes must happen only on new pages. Readers can continue accessing
< the table. This would affect COPY, and perhaps INSERT/UPDATE too.
< Another option is to avoid transaction logging entirely and truncate
< or drop the table on crash recovery. These should be implemented
< using ALTER TABLE, e.g. ALTER TABLE PERSISTENCE [ DROP | TRUNCATE |
< STABLE | DEFAULT ]. Tables using non-default logging should not use
< referential integrity with default-logging tables, and tables using
< stable logging probably can not have indexes. One complexity is
< the handling of indexes on TOAST tables.
> commit. This should be implemented using ALTER TABLE, e.g. ALTER
> TABLE PERSISTENCE [ DROP | TRUNCATE | DEFAULT ]. Tables using
> non-default logging should not use referential integrity with
> default-logging tables. A table without dirty buffers during a
> crash could perhaps avoid the drop/truncate.
>
> * Allow WAL logging to be turned off for a table, but the table would
> avoid being truncated/dropped [walcontrol]
>
> To do this, only a single writer can modify the table, and writes
> must happen only on new pages so the new pages can be removed during
> crash recovery. Readers can continue accessing the table. Such
> tables probably cannot have indexes. One complexity is the handling
> of indexes on TOAST tables.
2006-02-07 10:08:08 +08:00
|
|
|
default-logging tables. A table without dirty buffers during a
|
|
|
|
|
crash could perhaps avoid the drop/truncate.
|
2008-04-19 20:16:21 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2005-12/msg01016.php
|
Split up wal-logging items:
< * Allow control over which tables are WAL-logged [walcontrol]
> * Allow WAL logging to be turned off for a table, but the table
> might be dropped or truncated during crash recovery [walcontrol]
< commit. To do this, only a single writer can modify the table, and
< writes must happen only on new pages. Readers can continue accessing
< the table. This would affect COPY, and perhaps INSERT/UPDATE too.
< Another option is to avoid transaction logging entirely and truncate
< or drop the table on crash recovery. These should be implemented
< using ALTER TABLE, e.g. ALTER TABLE PERSISTENCE [ DROP | TRUNCATE |
< STABLE | DEFAULT ]. Tables using non-default logging should not use
< referential integrity with default-logging tables, and tables using
< stable logging probably can not have indexes. One complexity is
< the handling of indexes on TOAST tables.
> commit. This should be implemented using ALTER TABLE, e.g. ALTER
> TABLE PERSISTENCE [ DROP | TRUNCATE | DEFAULT ]. Tables using
> non-default logging should not use referential integrity with
> default-logging tables. A table without dirty buffers during a
> crash could perhaps avoid the drop/truncate.
>
> * Allow WAL logging to be turned off for a table, but the table would
> avoid being truncated/dropped [walcontrol]
>
> To do this, only a single writer can modify the table, and writes
> must happen only on new pages so the new pages can be removed during
> crash recovery. Readers can continue accessing the table. Such
> tables probably cannot have indexes. One complexity is the handling
> of indexes on TOAST tables.
2006-02-07 10:08:08 +08:00
|
|
|
|
|
|
|
|
* Allow WAL logging to be turned off for a table, but the table would
|
2008-04-19 20:16:21 +08:00
|
|
|
avoid being truncated/dropped
|
Split up wal-logging items:
< * Allow control over which tables are WAL-logged [walcontrol]
> * Allow WAL logging to be turned off for a table, but the table
> might be dropped or truncated during crash recovery [walcontrol]
< commit. To do this, only a single writer can modify the table, and
< writes must happen only on new pages. Readers can continue accessing
< the table. This would affect COPY, and perhaps INSERT/UPDATE too.
< Another option is to avoid transaction logging entirely and truncate
< or drop the table on crash recovery. These should be implemented
< using ALTER TABLE, e.g. ALTER TABLE PERSISTENCE [ DROP | TRUNCATE |
< STABLE | DEFAULT ]. Tables using non-default logging should not use
< referential integrity with default-logging tables, and tables using
< stable logging probably can not have indexes. One complexity is
< the handling of indexes on TOAST tables.
> commit. This should be implemented using ALTER TABLE, e.g. ALTER
> TABLE PERSISTENCE [ DROP | TRUNCATE | DEFAULT ]. Tables using
> non-default logging should not use referential integrity with
> default-logging tables. A table without dirty buffers during a
> crash could perhaps avoid the drop/truncate.
>
> * Allow WAL logging to be turned off for a table, but the table would
> avoid being truncated/dropped [walcontrol]
>
> To do this, only a single writer can modify the table, and writes
> must happen only on new pages so the new pages can be removed during
> crash recovery. Readers can continue accessing the table. Such
> tables probably cannot have indexes. One complexity is the handling
> of indexes on TOAST tables.
2006-02-07 10:08:08 +08:00
|
|
|
|
2007-08-28 11:00:36 +08:00
|
|
|
To do this, only a single writer can modify the table, and writes
|
Split up wal-logging items:
< * Allow control over which tables are WAL-logged [walcontrol]
> * Allow WAL logging to be turned off for a table, but the table
> might be dropped or truncated during crash recovery [walcontrol]
< commit. To do this, only a single writer can modify the table, and
< writes must happen only on new pages. Readers can continue accessing
< the table. This would affect COPY, and perhaps INSERT/UPDATE too.
< Another option is to avoid transaction logging entirely and truncate
< or drop the table on crash recovery. These should be implemented
< using ALTER TABLE, e.g. ALTER TABLE PERSISTENCE [ DROP | TRUNCATE |
< STABLE | DEFAULT ]. Tables using non-default logging should not use
< referential integrity with default-logging tables, and tables using
< stable logging probably can not have indexes. One complexity is
< the handling of indexes on TOAST tables.
> commit. This should be implemented using ALTER TABLE, e.g. ALTER
> TABLE PERSISTENCE [ DROP | TRUNCATE | DEFAULT ]. Tables using
> non-default logging should not use referential integrity with
> default-logging tables. A table without dirty buffers during a
> crash could perhaps avoid the drop/truncate.
>
> * Allow WAL logging to be turned off for a table, but the table would
> avoid being truncated/dropped [walcontrol]
>
> To do this, only a single writer can modify the table, and writes
> must happen only on new pages so the new pages can be removed during
> crash recovery. Readers can continue accessing the table. Such
> tables probably cannot have indexes. One complexity is the handling
> of indexes on TOAST tables.
2006-02-07 10:08:08 +08:00
|
|
|
must happen only on new pages so the new pages can be removed during
|
2007-08-28 11:00:36 +08:00
|
|
|
crash recovery. Readers can continue accessing the table. Such
|
|
|
|
|
tables probably cannot have indexes. One complexity is the handling
|
Split up wal-logging items:
< * Allow control over which tables are WAL-logged [walcontrol]
> * Allow WAL logging to be turned off for a table, but the table
> might be dropped or truncated during crash recovery [walcontrol]
< commit. To do this, only a single writer can modify the table, and
< writes must happen only on new pages. Readers can continue accessing
< the table. This would affect COPY, and perhaps INSERT/UPDATE too.
< Another option is to avoid transaction logging entirely and truncate
< or drop the table on crash recovery. These should be implemented
< using ALTER TABLE, e.g. ALTER TABLE PERSISTENCE [ DROP | TRUNCATE |
< STABLE | DEFAULT ]. Tables using non-default logging should not use
< referential integrity with default-logging tables, and tables using
< stable logging probably can not have indexes. One complexity is
< the handling of indexes on TOAST tables.
> commit. This should be implemented using ALTER TABLE, e.g. ALTER
> TABLE PERSISTENCE [ DROP | TRUNCATE | DEFAULT ]. Tables using
> non-default logging should not use referential integrity with
> default-logging tables. A table without dirty buffers during a
> crash could perhaps avoid the drop/truncate.
>
> * Allow WAL logging to be turned off for a table, but the table would
> avoid being truncated/dropped [walcontrol]
>
> To do this, only a single writer can modify the table, and writes
> must happen only on new pages so the new pages can be removed during
> crash recovery. Readers can continue accessing the table. Such
> tables probably cannot have indexes. One complexity is the handling
> of indexes on TOAST tables.
2006-02-07 10:08:08 +08:00
|
|
|
of indexes on TOAST tables.
|
2008-04-19 20:16:21 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2005-12/msg01016.php
|
2006-01-06 00:23:48 +08:00
|
|
|
|
2008-03-04 02:45:24 +08:00
|
|
|
* Speed WAL recovery by allowing more than one page to be prefetched
|
|
|
|
|
|
2008-03-19 07:32:57 +08:00
|
|
|
This should be done utilizing the same infrastructure used for
|
|
|
|
|
prefetching in general to avoid introducing complex error-prone code
|
|
|
|
|
in WAL replay.
|
2008-03-18 11:59:45 +08:00
|
|
|
http://archives.postgresql.org/pgsql-general/2007-12/msg00683.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-12/msg00497.php
|
2008-03-04 02:45:24 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-02/msg01279.php
|
|
|
|
|
|
2008-03-23 08:08:47 +08:00
|
|
|
* Improve WAL concurrency by increasing lock granularity
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-02/msg00556.php
|
|
|
|
|
|
2008-03-25 08:14:53 +08:00
|
|
|
* Be more aggressive about creating WAL files
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-10/msg01325.php
|
2008-03-25 20:50:47 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2004-07/msg01075.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2005-04/msg00556.php
|
2008-03-25 08:14:53 +08:00
|
|
|
|
2008-03-25 08:28:54 +08:00
|
|
|
* Have resource managers report the duration of their status changes
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-10/msg01468.php
|
|
|
|
|
|
2008-03-25 08:42:23 +08:00
|
|
|
* Move pgfoundry's xlogdump to /contrib and have it rely more closely
|
|
|
|
|
on the WAL backend code
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-11/msg00035.php
|
|
|
|
|
|
|
|
|
|
|
2008-03-23 08:08:47 +08:00
|
|
|
|
2008-03-04 02:45:24 +08:00
|
|
|
|
2002-04-26 04:20:50 +08:00
|
|
|
Optimizer / Executor
|
|
|
|
|
====================
|
2002-01-23 04:50:35 +08:00
|
|
|
|
2005-12-30 00:45:11 +08:00
|
|
|
* Improve selectivity functions for geometric operators
|
2004-08-01 13:15:58 +08:00
|
|
|
* Precompile SQL functions to avoid overhead
|
Cleaups:
< * Allow GRANT/REVOKE permissions to be given to all schema objects with one
> * Allow GRANT/REVOKE permissions to be applied to all schema objects with one
60c60
< specifications. This is because new databases are created by copying
> specifications. This is because new databases are created by copying
63c63
< directory would create a new database with tables that had incorrect
> directory would create a new database with tables that had incorrect
72c72
<
>
85c85
< By not showing commented-out variables, we discourage people from
> By not showing commented-out variables, we discourage people from
91c91
< * Allow point-in-time recovery to archive partially filled write-ahead
> * Allow point-in-time recovery to archive partially filled write-ahead
102c102
< Currently all schemas are owned by the super-user because they are
> Currently all schemas are owned by the super-user because they are
128c128
< * Allow INET subnet tests with non-constants to be indexed
> * Allow INET subnet tests using non-constants to be indexed
143,144c143,144
< * Allow to_char to print localized month names
< * Allow functions to have a search path specified at creation time
> * Allow to_char() to print localized month names
> * Allow functions to have a schema search path specified at creation time
146c146
< * Add GUC variable to allow output of interval values in ISO8601 format
> * Add a GUC variable to allow output of interval values in ISO8601 format
154,155c154,155
< * Prevent inet cast to cidr if the unmasked bits are not zero, or
< zero bits
> * Prevent INET cast to CIDR if the unmasked bits are not zero, or
> zero the bits
158c158
< o Allow nulls in arrays
> o Allow NULLs in arrays
160,161c160,161
< o Delay resolution of array expression type so assignment coercion
< can be performed on empty array expressions
> o Delay resolution of array expression's data type so assignment
> coercion can be performed on empty array expressions
218,219c218,219
< key, foreign key [inheritance]
< * UNIQUE INDEX on base column not honored on inserts/updates from
> key, foreign key
> * UNIQUE INDEX on base column not honored on INSERTs/UPDATEs from
221c221
< (dup) should fail [inheritance]
> (dup) should fail
246c246
< * Fetch heap pages matching index entries in sequential order [performance]
> * Fetch heap pages matching index entries in sequential order
307c307
< functionality in DELETE. It's been agreed that the keyword should
> functionality in DELETE. It's been agreed that the keyword should
318c318
< * Allow PREPARE to automatically determine parameter types based on the SQL
> * Allow PREPARE to automatically determine parameter types based on the SQL
340,342d339
< * Allow CREATE TABLE foo (f1 INT CHECK (f1 > 0) CHECK (f1 < 10)) to work
< by searching for non-conflicting constraint names, and prefix with
< table name?
347c344
< new database.
> a new database.
350,351d346
< * Ignore temporary tables from other sessions when processing
< inheritance?
354,355c349,351
< * Add a session mode to warn about non-standard SQL usage in queries
< * Add MERGE command that does UPDATE/DELETE, or on failure, INSERT (rules, triggers?)
> * Add a GUC variable to warn about non-standard SQL usage in queries
> * Add MERGE command that does UPDATE/DELETE, or on failure, INSERT (rules,
> triggers?)
357,359c353,356
< * Add NOVICE output level for helpful messages like automatic sequence/index creation
< * Add COMMENT ON for all cluster global objects (users, groups,
< databases and tablespaces)
> * Add NOVICE output level for helpful messages like automatic sequence/index
> creation
> * Add COMMENT ON for all cluster global objects (users, groups, databases
> and tablespaces)
363c360
< When enabled, this would allow errors in multi-statement transactions
> When enabled, this would allow errors in multi-statement transactions
417c414
< o Allow COPY to optionally include column headings as the first line
> o Allow COPY to optionally include column headings in the first line
450c447
<
>
462c459
< o Handle references to temporary tables that are created, destroyed,
> o Handle references to temporary tables that are created, destroyed,
464c461
<
>
469d465
< o Improve PL/PgSQL exception handling using savepoints
488c484
<
>
503d498
<
518c513
< o Add pg_dumpall custom format dumps.
> o Add pg_dumpall custom format dumps.
520c515
< This is probably best done by combining pg_dump and pg_dumpall
> This is probably best done by combining pg_dump and pg_dumpall
532d526
< o Improve error handling (?)
555c549
< Adding shared locks requires recording the table/rows numbers in a
> Adding shared locks requires recording the table/rows numbers in a
643c637
< Posix_fadvise() can control both sequential/random file caching and
> Posix_fadvise() can control both sequential/random file caching and
703c697
< from distributted.net, http://www1.distributed.net/source,
> from distributted.net, http://www1.distributed.net/source,
729c723
< * Add connection pooling [pool]
> * Add connection pooling
755d748
<
759c752
<
>
768c761
< so an abrupt operating system restart might lose a few seconds of
> so an abrupt operating system restart might lose a few seconds of
785c778
< * Add utility to compute accurate random_page_cost value
> * Create utility to compute accurate random_page_cost value
787,789d779
< * Allow sorting, temp files, temp tables to use multiple work directories
<
< This allows the I/O load to be spread across multiple disk drives.
795a786
>
808,809c799,800
<
< * Use mmap() rather than SYSV shared memory or to write WAL files (?) [mmap]
>
> * Use mmap() rather than SYSV shared memory or to write WAL files (?)
812,813c803,804
< portability issues. Anonymous mmap (or mmap to /dev/zero) is required
< to prevent I/O overhead.
> portability issues. Anonymous mmap (or mmap to /dev/zero) is required
> to prevent I/O overhead.
817,819c808,810
< Doing I/O to large tables would consume a lot of address space or
< require frequent mapping/unmapping. Extending the file also causes
< mapping problems that might require mapping only individual pages,
> Doing I/O to large tables would consume a lot of address space or
> require frequent mapping/unmapping. Extending the file also causes
> mapping problems that might require mapping only individual pages,
821c812
< way to _prevent_ I/O to disk from the dirty shared buffers so changes
> way to _prevent_ I/O to disk from the dirty shared buffers so changes
826c817
< tuple overhead
> per-tuple overhead
829,831c820,822
< This would involve using multiple threads or processes to do optimization,
< sorting, or execution of single query. The major advantage of such a
< feature would be to allow multiple CPUs to work together to process a
> This would involve using multiple threads or processes to do optimization,
> sorting, or execution of single query. The major advantage of such a
> feature would be to allow multiple CPUs to work together to process a
834c825
< * Research the use of larger pages sizes
> * Research the use of larger page sizes
842a834
> * Move some /contrib modules out to their own project sites
845d836
< * Improve access-permissions check on data directory in Cygwin (Tom)
847,848c838
< * Clarify use of 'application' and 'command' tags in SGML docs
< * Better document ability to build only certain interfaces (Marc)
> * Improve documentation to build only interfaces (Marc)
852,853d841
< * Research interaction of setitimer() and sleep() used by statement_timeout
< * Rename /scripts directory because they are all C programs now
856,857d843
< * Allow binaries to be statically linked so they are more easily relocated
< * Move some /contrib modules out to their own project sites
862c848
< o Remove per-backend parameter file and move into shared memory?
> o Remove per-backend parameter file and move into shared memory
877,878c863,864
< o Update clients to use data types, typmod, schema.table.column names of
< result sets using new query protocol
> o Update clients to use data types, typmod, schema.table.column names
> of result sets using new query protocol
900d885
< * Kris is Kris Jurka
910c895
< * Simon is Simon Riggs
> * Simon is Simon Riggs <simon@2ndquadrant.com>
913d897
< * Teodor is
2004-11-11 11:59:14 +08:00
|
|
|
* Create utility to compute accurate random_page_cost value
|
2002-04-24 04:26:29 +08:00
|
|
|
* Improve ability to display optimizer analysis using OPTIMIZER_DEBUG
|
2006-12-13 06:31:19 +08:00
|
|
|
* Have EXPLAIN ANALYZE issue NOTICE messages when the estimated and
|
|
|
|
|
actual row counts differ by a specified percentage
|
2008-04-04 00:37:07 +08:00
|
|
|
* Improve how ANALYZE computes in-doubt tuples
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-11/msg00771.php
|
|
|
|
|
|
Update wording, query -> statement:
< * %Allow pooled connections to list all prepared queries
> * %Allow pooled connections to list all prepared statements
28c28
< the queries prepared in the current session.
> the statements prepared in the current session.
143c143
< o Allow a warm standby system to also allow read-only queries
> o Allow a warm standby system to also allow read-only statements
404c404
< * Add GUC to issue notice about queries that use unjoined tables
> * Add GUC to issue notice about statements that use unjoined tables
490c490
< Another idea would be to allow actual SELECT queries in a COPY.
> Another idea would be to allow actual SELECT statements in a COPY.
554c554
< o Allow function argument names to be queries from PL/PgSQL
> o Allow function argument names to be statements from PL/PgSQL
591c591
< o Improve psql's handling of multi-line queries
> o Improve psql's handling of multi-line statements
< Currently, while \e saves a single query as one entry, interactive
< queries are saved one line at a time. Ideally all queries
> Currently, while \e saves a single statement as one entry, interactive
> statements are saved one line at a time. Ideally all statements
665c665
< o Allow query results to be automatically batched to the client
> o Allow statement results to be automatically batched to the client
667c667
< Currently, all query results are transfered to the libpq
> Currently, all statement results are transfered to the libpq
672c672
< One complexity is that a query like SELECT 1/col could error
> One complexity is that a statement like SELECT 1/col could error
739c739
< * Allow queries across databases or servers with transaction
> * Allow statements across databases or servers with transaction
< inheritance, allow it to work for UPDATE and DELETE queries, and allow
< it to be used for all queries with little performance impact
> inheritance, allow it to work for UPDATE and DELETE statements, and allow
> it to be used for all statements with little performance impact
876c876
< * Consider automatic caching of queries at various levels:
> * Consider automatic caching of statements at various levels:
947c947
< a single session using multiple threads to execute a query faster.
> a single session using multiple threads to execute a statement faster.
1025c1025
< * Log queries where the optimizer row estimates were dramatically
> * Log statements where the optimizer row estimates were dramatically
1146c1146
< of result sets using new query protocol
> of result sets using new statement protocol
2005-12-12 21:36:36 +08:00
|
|
|
* Log statements where the optimizer row estimates were dramatically
|
2005-07-05 01:00:32 +08:00
|
|
|
different from the number of rows actually found?
|
2006-08-01 07:04:13 +08:00
|
|
|
* Consider compressed annealing to search for query plans
|
|
|
|
|
|
|
|
|
|
This might replace GEQO, http://sixdemonbag.org/Djinni.
|
2002-10-04 10:28:42 +08:00
|
|
|
|
2007-08-28 11:00:36 +08:00
|
|
|
* Improve merge join performance by allowing mark/restore of
|
2007-01-10 06:43:31 +08:00
|
|
|
tuple sources
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-01/msg00096.php
|
|
|
|
|
|
2008-03-12 02:14:57 +08:00
|
|
|
* Consider using a hash for joining to a large IN (VALUES ...) list
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-05/msg00450.php
|
|
|
|
|
|
2007-01-10 06:43:31 +08:00
|
|
|
|
2005-04-18 22:42:35 +08:00
|
|
|
|
2008-03-12 05:06:10 +08:00
|
|
|
Background Writer
|
|
|
|
|
=================
|
|
|
|
|
|
|
|
|
|
* Consider having the background writer update the transaction status
|
|
|
|
|
hint bits before writing out the page
|
|
|
|
|
|
|
|
|
|
Implementing this requires the background writer to have access to system
|
|
|
|
|
catalogs and the transaction status log.
|
|
|
|
|
|
|
|
|
|
* Consider adding buffers the background writer finds reusable to the
|
2008-08-19 11:08:56 +08:00
|
|
|
free list
|
2008-03-12 05:06:10 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-04/msg00781.php
|
|
|
|
|
|
|
|
|
|
* Automatically tune bgwriter_delay based on activity rather then using a
|
|
|
|
|
fixed interval
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-04/msg00781.php
|
|
|
|
|
|
|
|
|
|
* Consider wither increasing BM_MAX_USAGE_COUNT improves performance
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-06/msg01007.php
|
|
|
|
|
|
|
|
|
|
* Test to see if calling PreallocXlogFiles() from the background writer
|
|
|
|
|
will help with WAL segment creation latency
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-patches/2007-06/msg00340.php
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2005-07-05 01:00:32 +08:00
|
|
|
Miscellaneous Performance
|
|
|
|
|
=========================
|
2002-01-23 04:50:35 +08:00
|
|
|
|
|
|
|
|
* Do async I/O for faster random read-ahead of data
|
2004-08-01 13:15:58 +08:00
|
|
|
|
|
|
|
|
Async I/O allows multiple I/O requests to be sent to the disk with
|
|
|
|
|
results coming back asynchronously.
|
2007-07-17 08:07:54 +08:00
|
|
|
|
2006-10-22 01:31:18 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-10/msg00820.php
|
2008-03-13 09:56:46 +08:00
|
|
|
http://archives.postgresql.org/pgsql-performance/2007-09/msg00255.php
|
2007-12-12 15:06:27 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-12/msg00027.php
|
2008-03-23 09:13:38 +08:00
|
|
|
http://archives.postgresql.org/pgsql-patches/2008-01/msg00170.php
|
Cleaups:
< * Allow GRANT/REVOKE permissions to be given to all schema objects with one
> * Allow GRANT/REVOKE permissions to be applied to all schema objects with one
60c60
< specifications. This is because new databases are created by copying
> specifications. This is because new databases are created by copying
63c63
< directory would create a new database with tables that had incorrect
> directory would create a new database with tables that had incorrect
72c72
<
>
85c85
< By not showing commented-out variables, we discourage people from
> By not showing commented-out variables, we discourage people from
91c91
< * Allow point-in-time recovery to archive partially filled write-ahead
> * Allow point-in-time recovery to archive partially filled write-ahead
102c102
< Currently all schemas are owned by the super-user because they are
> Currently all schemas are owned by the super-user because they are
128c128
< * Allow INET subnet tests with non-constants to be indexed
> * Allow INET subnet tests using non-constants to be indexed
143,144c143,144
< * Allow to_char to print localized month names
< * Allow functions to have a search path specified at creation time
> * Allow to_char() to print localized month names
> * Allow functions to have a schema search path specified at creation time
146c146
< * Add GUC variable to allow output of interval values in ISO8601 format
> * Add a GUC variable to allow output of interval values in ISO8601 format
154,155c154,155
< * Prevent inet cast to cidr if the unmasked bits are not zero, or
< zero bits
> * Prevent INET cast to CIDR if the unmasked bits are not zero, or
> zero the bits
158c158
< o Allow nulls in arrays
> o Allow NULLs in arrays
160,161c160,161
< o Delay resolution of array expression type so assignment coercion
< can be performed on empty array expressions
> o Delay resolution of array expression's data type so assignment
> coercion can be performed on empty array expressions
218,219c218,219
< key, foreign key [inheritance]
< * UNIQUE INDEX on base column not honored on inserts/updates from
> key, foreign key
> * UNIQUE INDEX on base column not honored on INSERTs/UPDATEs from
221c221
< (dup) should fail [inheritance]
> (dup) should fail
246c246
< * Fetch heap pages matching index entries in sequential order [performance]
> * Fetch heap pages matching index entries in sequential order
307c307
< functionality in DELETE. It's been agreed that the keyword should
> functionality in DELETE. It's been agreed that the keyword should
318c318
< * Allow PREPARE to automatically determine parameter types based on the SQL
> * Allow PREPARE to automatically determine parameter types based on the SQL
340,342d339
< * Allow CREATE TABLE foo (f1 INT CHECK (f1 > 0) CHECK (f1 < 10)) to work
< by searching for non-conflicting constraint names, and prefix with
< table name?
347c344
< new database.
> a new database.
350,351d346
< * Ignore temporary tables from other sessions when processing
< inheritance?
354,355c349,351
< * Add a session mode to warn about non-standard SQL usage in queries
< * Add MERGE command that does UPDATE/DELETE, or on failure, INSERT (rules, triggers?)
> * Add a GUC variable to warn about non-standard SQL usage in queries
> * Add MERGE command that does UPDATE/DELETE, or on failure, INSERT (rules,
> triggers?)
357,359c353,356
< * Add NOVICE output level for helpful messages like automatic sequence/index creation
< * Add COMMENT ON for all cluster global objects (users, groups,
< databases and tablespaces)
> * Add NOVICE output level for helpful messages like automatic sequence/index
> creation
> * Add COMMENT ON for all cluster global objects (users, groups, databases
> and tablespaces)
363c360
< When enabled, this would allow errors in multi-statement transactions
> When enabled, this would allow errors in multi-statement transactions
417c414
< o Allow COPY to optionally include column headings as the first line
> o Allow COPY to optionally include column headings in the first line
450c447
<
>
462c459
< o Handle references to temporary tables that are created, destroyed,
> o Handle references to temporary tables that are created, destroyed,
464c461
<
>
469d465
< o Improve PL/PgSQL exception handling using savepoints
488c484
<
>
503d498
<
518c513
< o Add pg_dumpall custom format dumps.
> o Add pg_dumpall custom format dumps.
520c515
< This is probably best done by combining pg_dump and pg_dumpall
> This is probably best done by combining pg_dump and pg_dumpall
532d526
< o Improve error handling (?)
555c549
< Adding shared locks requires recording the table/rows numbers in a
> Adding shared locks requires recording the table/rows numbers in a
643c637
< Posix_fadvise() can control both sequential/random file caching and
> Posix_fadvise() can control both sequential/random file caching and
703c697
< from distributted.net, http://www1.distributed.net/source,
> from distributted.net, http://www1.distributed.net/source,
729c723
< * Add connection pooling [pool]
> * Add connection pooling
755d748
<
759c752
<
>
768c761
< so an abrupt operating system restart might lose a few seconds of
> so an abrupt operating system restart might lose a few seconds of
785c778
< * Add utility to compute accurate random_page_cost value
> * Create utility to compute accurate random_page_cost value
787,789d779
< * Allow sorting, temp files, temp tables to use multiple work directories
<
< This allows the I/O load to be spread across multiple disk drives.
795a786
>
808,809c799,800
<
< * Use mmap() rather than SYSV shared memory or to write WAL files (?) [mmap]
>
> * Use mmap() rather than SYSV shared memory or to write WAL files (?)
812,813c803,804
< portability issues. Anonymous mmap (or mmap to /dev/zero) is required
< to prevent I/O overhead.
> portability issues. Anonymous mmap (or mmap to /dev/zero) is required
> to prevent I/O overhead.
817,819c808,810
< Doing I/O to large tables would consume a lot of address space or
< require frequent mapping/unmapping. Extending the file also causes
< mapping problems that might require mapping only individual pages,
> Doing I/O to large tables would consume a lot of address space or
> require frequent mapping/unmapping. Extending the file also causes
> mapping problems that might require mapping only individual pages,
821c812
< way to _prevent_ I/O to disk from the dirty shared buffers so changes
> way to _prevent_ I/O to disk from the dirty shared buffers so changes
826c817
< tuple overhead
> per-tuple overhead
829,831c820,822
< This would involve using multiple threads or processes to do optimization,
< sorting, or execution of single query. The major advantage of such a
< feature would be to allow multiple CPUs to work together to process a
> This would involve using multiple threads or processes to do optimization,
> sorting, or execution of single query. The major advantage of such a
> feature would be to allow multiple CPUs to work together to process a
834c825
< * Research the use of larger pages sizes
> * Research the use of larger page sizes
842a834
> * Move some /contrib modules out to their own project sites
845d836
< * Improve access-permissions check on data directory in Cygwin (Tom)
847,848c838
< * Clarify use of 'application' and 'command' tags in SGML docs
< * Better document ability to build only certain interfaces (Marc)
> * Improve documentation to build only interfaces (Marc)
852,853d841
< * Research interaction of setitimer() and sleep() used by statement_timeout
< * Rename /scripts directory because they are all C programs now
856,857d843
< * Allow binaries to be statically linked so they are more easily relocated
< * Move some /contrib modules out to their own project sites
862c848
< o Remove per-backend parameter file and move into shared memory?
> o Remove per-backend parameter file and move into shared memory
877,878c863,864
< o Update clients to use data types, typmod, schema.table.column names of
< result sets using new query protocol
> o Update clients to use data types, typmod, schema.table.column names
> of result sets using new query protocol
900d885
< * Kris is Kris Jurka
910c895
< * Simon is Simon Riggs
> * Simon is Simon Riggs <simon@2ndquadrant.com>
913d897
< * Teodor is
2004-11-11 11:59:14 +08:00
|
|
|
|
2005-07-05 01:00:32 +08:00
|
|
|
* Use mmap() rather than SYSV shared memory or to write WAL files?
|
2004-08-01 13:15:58 +08:00
|
|
|
|
|
|
|
|
This would remove the requirement for SYSV SHM but would introduce
|
Cleaups:
< * Allow GRANT/REVOKE permissions to be given to all schema objects with one
> * Allow GRANT/REVOKE permissions to be applied to all schema objects with one
60c60
< specifications. This is because new databases are created by copying
> specifications. This is because new databases are created by copying
63c63
< directory would create a new database with tables that had incorrect
> directory would create a new database with tables that had incorrect
72c72
<
>
85c85
< By not showing commented-out variables, we discourage people from
> By not showing commented-out variables, we discourage people from
91c91
< * Allow point-in-time recovery to archive partially filled write-ahead
> * Allow point-in-time recovery to archive partially filled write-ahead
102c102
< Currently all schemas are owned by the super-user because they are
> Currently all schemas are owned by the super-user because they are
128c128
< * Allow INET subnet tests with non-constants to be indexed
> * Allow INET subnet tests using non-constants to be indexed
143,144c143,144
< * Allow to_char to print localized month names
< * Allow functions to have a search path specified at creation time
> * Allow to_char() to print localized month names
> * Allow functions to have a schema search path specified at creation time
146c146
< * Add GUC variable to allow output of interval values in ISO8601 format
> * Add a GUC variable to allow output of interval values in ISO8601 format
154,155c154,155
< * Prevent inet cast to cidr if the unmasked bits are not zero, or
< zero bits
> * Prevent INET cast to CIDR if the unmasked bits are not zero, or
> zero the bits
158c158
< o Allow nulls in arrays
> o Allow NULLs in arrays
160,161c160,161
< o Delay resolution of array expression type so assignment coercion
< can be performed on empty array expressions
> o Delay resolution of array expression's data type so assignment
> coercion can be performed on empty array expressions
218,219c218,219
< key, foreign key [inheritance]
< * UNIQUE INDEX on base column not honored on inserts/updates from
> key, foreign key
> * UNIQUE INDEX on base column not honored on INSERTs/UPDATEs from
221c221
< (dup) should fail [inheritance]
> (dup) should fail
246c246
< * Fetch heap pages matching index entries in sequential order [performance]
> * Fetch heap pages matching index entries in sequential order
307c307
< functionality in DELETE. It's been agreed that the keyword should
> functionality in DELETE. It's been agreed that the keyword should
318c318
< * Allow PREPARE to automatically determine parameter types based on the SQL
> * Allow PREPARE to automatically determine parameter types based on the SQL
340,342d339
< * Allow CREATE TABLE foo (f1 INT CHECK (f1 > 0) CHECK (f1 < 10)) to work
< by searching for non-conflicting constraint names, and prefix with
< table name?
347c344
< new database.
> a new database.
350,351d346
< * Ignore temporary tables from other sessions when processing
< inheritance?
354,355c349,351
< * Add a session mode to warn about non-standard SQL usage in queries
< * Add MERGE command that does UPDATE/DELETE, or on failure, INSERT (rules, triggers?)
> * Add a GUC variable to warn about non-standard SQL usage in queries
> * Add MERGE command that does UPDATE/DELETE, or on failure, INSERT (rules,
> triggers?)
357,359c353,356
< * Add NOVICE output level for helpful messages like automatic sequence/index creation
< * Add COMMENT ON for all cluster global objects (users, groups,
< databases and tablespaces)
> * Add NOVICE output level for helpful messages like automatic sequence/index
> creation
> * Add COMMENT ON for all cluster global objects (users, groups, databases
> and tablespaces)
363c360
< When enabled, this would allow errors in multi-statement transactions
> When enabled, this would allow errors in multi-statement transactions
417c414
< o Allow COPY to optionally include column headings as the first line
> o Allow COPY to optionally include column headings in the first line
450c447
<
>
462c459
< o Handle references to temporary tables that are created, destroyed,
> o Handle references to temporary tables that are created, destroyed,
464c461
<
>
469d465
< o Improve PL/PgSQL exception handling using savepoints
488c484
<
>
503d498
<
518c513
< o Add pg_dumpall custom format dumps.
> o Add pg_dumpall custom format dumps.
520c515
< This is probably best done by combining pg_dump and pg_dumpall
> This is probably best done by combining pg_dump and pg_dumpall
532d526
< o Improve error handling (?)
555c549
< Adding shared locks requires recording the table/rows numbers in a
> Adding shared locks requires recording the table/rows numbers in a
643c637
< Posix_fadvise() can control both sequential/random file caching and
> Posix_fadvise() can control both sequential/random file caching and
703c697
< from distributted.net, http://www1.distributed.net/source,
> from distributted.net, http://www1.distributed.net/source,
729c723
< * Add connection pooling [pool]
> * Add connection pooling
755d748
<
759c752
<
>
768c761
< so an abrupt operating system restart might lose a few seconds of
> so an abrupt operating system restart might lose a few seconds of
785c778
< * Add utility to compute accurate random_page_cost value
> * Create utility to compute accurate random_page_cost value
787,789d779
< * Allow sorting, temp files, temp tables to use multiple work directories
<
< This allows the I/O load to be spread across multiple disk drives.
795a786
>
808,809c799,800
<
< * Use mmap() rather than SYSV shared memory or to write WAL files (?) [mmap]
>
> * Use mmap() rather than SYSV shared memory or to write WAL files (?)
812,813c803,804
< portability issues. Anonymous mmap (or mmap to /dev/zero) is required
< to prevent I/O overhead.
> portability issues. Anonymous mmap (or mmap to /dev/zero) is required
> to prevent I/O overhead.
817,819c808,810
< Doing I/O to large tables would consume a lot of address space or
< require frequent mapping/unmapping. Extending the file also causes
< mapping problems that might require mapping only individual pages,
> Doing I/O to large tables would consume a lot of address space or
> require frequent mapping/unmapping. Extending the file also causes
> mapping problems that might require mapping only individual pages,
821c812
< way to _prevent_ I/O to disk from the dirty shared buffers so changes
> way to _prevent_ I/O to disk from the dirty shared buffers so changes
826c817
< tuple overhead
> per-tuple overhead
829,831c820,822
< This would involve using multiple threads or processes to do optimization,
< sorting, or execution of single query. The major advantage of such a
< feature would be to allow multiple CPUs to work together to process a
> This would involve using multiple threads or processes to do optimization,
> sorting, or execution of single query. The major advantage of such a
> feature would be to allow multiple CPUs to work together to process a
834c825
< * Research the use of larger pages sizes
> * Research the use of larger page sizes
842a834
> * Move some /contrib modules out to their own project sites
845d836
< * Improve access-permissions check on data directory in Cygwin (Tom)
847,848c838
< * Clarify use of 'application' and 'command' tags in SGML docs
< * Better document ability to build only certain interfaces (Marc)
> * Improve documentation to build only interfaces (Marc)
852,853d841
< * Research interaction of setitimer() and sleep() used by statement_timeout
< * Rename /scripts directory because they are all C programs now
856,857d843
< * Allow binaries to be statically linked so they are more easily relocated
< * Move some /contrib modules out to their own project sites
862c848
< o Remove per-backend parameter file and move into shared memory?
> o Remove per-backend parameter file and move into shared memory
877,878c863,864
< o Update clients to use data types, typmod, schema.table.column names of
< result sets using new query protocol
> o Update clients to use data types, typmod, schema.table.column names
> of result sets using new query protocol
900d885
< * Kris is Kris Jurka
910c895
< * Simon is Simon Riggs
> * Simon is Simon Riggs <simon@2ndquadrant.com>
913d897
< * Teodor is
2004-11-11 11:59:14 +08:00
|
|
|
portability issues. Anonymous mmap (or mmap to /dev/zero) is required
|
|
|
|
|
to prevent I/O overhead.
|
2004-11-09 11:57:42 +08:00
|
|
|
|
|
|
|
|
* Consider mmap()'ing files into a backend?
|
|
|
|
|
|
Cleaups:
< * Allow GRANT/REVOKE permissions to be given to all schema objects with one
> * Allow GRANT/REVOKE permissions to be applied to all schema objects with one
60c60
< specifications. This is because new databases are created by copying
> specifications. This is because new databases are created by copying
63c63
< directory would create a new database with tables that had incorrect
> directory would create a new database with tables that had incorrect
72c72
<
>
85c85
< By not showing commented-out variables, we discourage people from
> By not showing commented-out variables, we discourage people from
91c91
< * Allow point-in-time recovery to archive partially filled write-ahead
> * Allow point-in-time recovery to archive partially filled write-ahead
102c102
< Currently all schemas are owned by the super-user because they are
> Currently all schemas are owned by the super-user because they are
128c128
< * Allow INET subnet tests with non-constants to be indexed
> * Allow INET subnet tests using non-constants to be indexed
143,144c143,144
< * Allow to_char to print localized month names
< * Allow functions to have a search path specified at creation time
> * Allow to_char() to print localized month names
> * Allow functions to have a schema search path specified at creation time
146c146
< * Add GUC variable to allow output of interval values in ISO8601 format
> * Add a GUC variable to allow output of interval values in ISO8601 format
154,155c154,155
< * Prevent inet cast to cidr if the unmasked bits are not zero, or
< zero bits
> * Prevent INET cast to CIDR if the unmasked bits are not zero, or
> zero the bits
158c158
< o Allow nulls in arrays
> o Allow NULLs in arrays
160,161c160,161
< o Delay resolution of array expression type so assignment coercion
< can be performed on empty array expressions
> o Delay resolution of array expression's data type so assignment
> coercion can be performed on empty array expressions
218,219c218,219
< key, foreign key [inheritance]
< * UNIQUE INDEX on base column not honored on inserts/updates from
> key, foreign key
> * UNIQUE INDEX on base column not honored on INSERTs/UPDATEs from
221c221
< (dup) should fail [inheritance]
> (dup) should fail
246c246
< * Fetch heap pages matching index entries in sequential order [performance]
> * Fetch heap pages matching index entries in sequential order
307c307
< functionality in DELETE. It's been agreed that the keyword should
> functionality in DELETE. It's been agreed that the keyword should
318c318
< * Allow PREPARE to automatically determine parameter types based on the SQL
> * Allow PREPARE to automatically determine parameter types based on the SQL
340,342d339
< * Allow CREATE TABLE foo (f1 INT CHECK (f1 > 0) CHECK (f1 < 10)) to work
< by searching for non-conflicting constraint names, and prefix with
< table name?
347c344
< new database.
> a new database.
350,351d346
< * Ignore temporary tables from other sessions when processing
< inheritance?
354,355c349,351
< * Add a session mode to warn about non-standard SQL usage in queries
< * Add MERGE command that does UPDATE/DELETE, or on failure, INSERT (rules, triggers?)
> * Add a GUC variable to warn about non-standard SQL usage in queries
> * Add MERGE command that does UPDATE/DELETE, or on failure, INSERT (rules,
> triggers?)
357,359c353,356
< * Add NOVICE output level for helpful messages like automatic sequence/index creation
< * Add COMMENT ON for all cluster global objects (users, groups,
< databases and tablespaces)
> * Add NOVICE output level for helpful messages like automatic sequence/index
> creation
> * Add COMMENT ON for all cluster global objects (users, groups, databases
> and tablespaces)
363c360
< When enabled, this would allow errors in multi-statement transactions
> When enabled, this would allow errors in multi-statement transactions
417c414
< o Allow COPY to optionally include column headings as the first line
> o Allow COPY to optionally include column headings in the first line
450c447
<
>
462c459
< o Handle references to temporary tables that are created, destroyed,
> o Handle references to temporary tables that are created, destroyed,
464c461
<
>
469d465
< o Improve PL/PgSQL exception handling using savepoints
488c484
<
>
503d498
<
518c513
< o Add pg_dumpall custom format dumps.
> o Add pg_dumpall custom format dumps.
520c515
< This is probably best done by combining pg_dump and pg_dumpall
> This is probably best done by combining pg_dump and pg_dumpall
532d526
< o Improve error handling (?)
555c549
< Adding shared locks requires recording the table/rows numbers in a
> Adding shared locks requires recording the table/rows numbers in a
643c637
< Posix_fadvise() can control both sequential/random file caching and
> Posix_fadvise() can control both sequential/random file caching and
703c697
< from distributted.net, http://www1.distributed.net/source,
> from distributted.net, http://www1.distributed.net/source,
729c723
< * Add connection pooling [pool]
> * Add connection pooling
755d748
<
759c752
<
>
768c761
< so an abrupt operating system restart might lose a few seconds of
> so an abrupt operating system restart might lose a few seconds of
785c778
< * Add utility to compute accurate random_page_cost value
> * Create utility to compute accurate random_page_cost value
787,789d779
< * Allow sorting, temp files, temp tables to use multiple work directories
<
< This allows the I/O load to be spread across multiple disk drives.
795a786
>
808,809c799,800
<
< * Use mmap() rather than SYSV shared memory or to write WAL files (?) [mmap]
>
> * Use mmap() rather than SYSV shared memory or to write WAL files (?)
812,813c803,804
< portability issues. Anonymous mmap (or mmap to /dev/zero) is required
< to prevent I/O overhead.
> portability issues. Anonymous mmap (or mmap to /dev/zero) is required
> to prevent I/O overhead.
817,819c808,810
< Doing I/O to large tables would consume a lot of address space or
< require frequent mapping/unmapping. Extending the file also causes
< mapping problems that might require mapping only individual pages,
> Doing I/O to large tables would consume a lot of address space or
> require frequent mapping/unmapping. Extending the file also causes
> mapping problems that might require mapping only individual pages,
821c812
< way to _prevent_ I/O to disk from the dirty shared buffers so changes
> way to _prevent_ I/O to disk from the dirty shared buffers so changes
826c817
< tuple overhead
> per-tuple overhead
829,831c820,822
< This would involve using multiple threads or processes to do optimization,
< sorting, or execution of single query. The major advantage of such a
< feature would be to allow multiple CPUs to work together to process a
> This would involve using multiple threads or processes to do optimization,
> sorting, or execution of single query. The major advantage of such a
> feature would be to allow multiple CPUs to work together to process a
834c825
< * Research the use of larger pages sizes
> * Research the use of larger page sizes
842a834
> * Move some /contrib modules out to their own project sites
845d836
< * Improve access-permissions check on data directory in Cygwin (Tom)
847,848c838
< * Clarify use of 'application' and 'command' tags in SGML docs
< * Better document ability to build only certain interfaces (Marc)
> * Improve documentation to build only interfaces (Marc)
852,853d841
< * Research interaction of setitimer() and sleep() used by statement_timeout
< * Rename /scripts directory because they are all C programs now
856,857d843
< * Allow binaries to be statically linked so they are more easily relocated
< * Move some /contrib modules out to their own project sites
862c848
< o Remove per-backend parameter file and move into shared memory?
> o Remove per-backend parameter file and move into shared memory
877,878c863,864
< o Update clients to use data types, typmod, schema.table.column names of
< result sets using new query protocol
> o Update clients to use data types, typmod, schema.table.column names
> of result sets using new query protocol
900d885
< * Kris is Kris Jurka
910c895
< * Simon is Simon Riggs
> * Simon is Simon Riggs <simon@2ndquadrant.com>
913d897
< * Teodor is
2004-11-11 11:59:14 +08:00
|
|
|
Doing I/O to large tables would consume a lot of address space or
|
|
|
|
|
require frequent mapping/unmapping. Extending the file also causes
|
|
|
|
|
mapping problems that might require mapping only individual pages,
|
2004-11-09 11:57:42 +08:00
|
|
|
leading to thousands of mappings. Another problem is that there is no
|
Cleaups:
< * Allow GRANT/REVOKE permissions to be given to all schema objects with one
> * Allow GRANT/REVOKE permissions to be applied to all schema objects with one
60c60
< specifications. This is because new databases are created by copying
> specifications. This is because new databases are created by copying
63c63
< directory would create a new database with tables that had incorrect
> directory would create a new database with tables that had incorrect
72c72
<
>
85c85
< By not showing commented-out variables, we discourage people from
> By not showing commented-out variables, we discourage people from
91c91
< * Allow point-in-time recovery to archive partially filled write-ahead
> * Allow point-in-time recovery to archive partially filled write-ahead
102c102
< Currently all schemas are owned by the super-user because they are
> Currently all schemas are owned by the super-user because they are
128c128
< * Allow INET subnet tests with non-constants to be indexed
> * Allow INET subnet tests using non-constants to be indexed
143,144c143,144
< * Allow to_char to print localized month names
< * Allow functions to have a search path specified at creation time
> * Allow to_char() to print localized month names
> * Allow functions to have a schema search path specified at creation time
146c146
< * Add GUC variable to allow output of interval values in ISO8601 format
> * Add a GUC variable to allow output of interval values in ISO8601 format
154,155c154,155
< * Prevent inet cast to cidr if the unmasked bits are not zero, or
< zero bits
> * Prevent INET cast to CIDR if the unmasked bits are not zero, or
> zero the bits
158c158
< o Allow nulls in arrays
> o Allow NULLs in arrays
160,161c160,161
< o Delay resolution of array expression type so assignment coercion
< can be performed on empty array expressions
> o Delay resolution of array expression's data type so assignment
> coercion can be performed on empty array expressions
218,219c218,219
< key, foreign key [inheritance]
< * UNIQUE INDEX on base column not honored on inserts/updates from
> key, foreign key
> * UNIQUE INDEX on base column not honored on INSERTs/UPDATEs from
221c221
< (dup) should fail [inheritance]
> (dup) should fail
246c246
< * Fetch heap pages matching index entries in sequential order [performance]
> * Fetch heap pages matching index entries in sequential order
307c307
< functionality in DELETE. It's been agreed that the keyword should
> functionality in DELETE. It's been agreed that the keyword should
318c318
< * Allow PREPARE to automatically determine parameter types based on the SQL
> * Allow PREPARE to automatically determine parameter types based on the SQL
340,342d339
< * Allow CREATE TABLE foo (f1 INT CHECK (f1 > 0) CHECK (f1 < 10)) to work
< by searching for non-conflicting constraint names, and prefix with
< table name?
347c344
< new database.
> a new database.
350,351d346
< * Ignore temporary tables from other sessions when processing
< inheritance?
354,355c349,351
< * Add a session mode to warn about non-standard SQL usage in queries
< * Add MERGE command that does UPDATE/DELETE, or on failure, INSERT (rules, triggers?)
> * Add a GUC variable to warn about non-standard SQL usage in queries
> * Add MERGE command that does UPDATE/DELETE, or on failure, INSERT (rules,
> triggers?)
357,359c353,356
< * Add NOVICE output level for helpful messages like automatic sequence/index creation
< * Add COMMENT ON for all cluster global objects (users, groups,
< databases and tablespaces)
> * Add NOVICE output level for helpful messages like automatic sequence/index
> creation
> * Add COMMENT ON for all cluster global objects (users, groups, databases
> and tablespaces)
363c360
< When enabled, this would allow errors in multi-statement transactions
> When enabled, this would allow errors in multi-statement transactions
417c414
< o Allow COPY to optionally include column headings as the first line
> o Allow COPY to optionally include column headings in the first line
450c447
<
>
462c459
< o Handle references to temporary tables that are created, destroyed,
> o Handle references to temporary tables that are created, destroyed,
464c461
<
>
469d465
< o Improve PL/PgSQL exception handling using savepoints
488c484
<
>
503d498
<
518c513
< o Add pg_dumpall custom format dumps.
> o Add pg_dumpall custom format dumps.
520c515
< This is probably best done by combining pg_dump and pg_dumpall
> This is probably best done by combining pg_dump and pg_dumpall
532d526
< o Improve error handling (?)
555c549
< Adding shared locks requires recording the table/rows numbers in a
> Adding shared locks requires recording the table/rows numbers in a
643c637
< Posix_fadvise() can control both sequential/random file caching and
> Posix_fadvise() can control both sequential/random file caching and
703c697
< from distributted.net, http://www1.distributed.net/source,
> from distributted.net, http://www1.distributed.net/source,
729c723
< * Add connection pooling [pool]
> * Add connection pooling
755d748
<
759c752
<
>
768c761
< so an abrupt operating system restart might lose a few seconds of
> so an abrupt operating system restart might lose a few seconds of
785c778
< * Add utility to compute accurate random_page_cost value
> * Create utility to compute accurate random_page_cost value
787,789d779
< * Allow sorting, temp files, temp tables to use multiple work directories
<
< This allows the I/O load to be spread across multiple disk drives.
795a786
>
808,809c799,800
<
< * Use mmap() rather than SYSV shared memory or to write WAL files (?) [mmap]
>
> * Use mmap() rather than SYSV shared memory or to write WAL files (?)
812,813c803,804
< portability issues. Anonymous mmap (or mmap to /dev/zero) is required
< to prevent I/O overhead.
> portability issues. Anonymous mmap (or mmap to /dev/zero) is required
> to prevent I/O overhead.
817,819c808,810
< Doing I/O to large tables would consume a lot of address space or
< require frequent mapping/unmapping. Extending the file also causes
< mapping problems that might require mapping only individual pages,
> Doing I/O to large tables would consume a lot of address space or
> require frequent mapping/unmapping. Extending the file also causes
> mapping problems that might require mapping only individual pages,
821c812
< way to _prevent_ I/O to disk from the dirty shared buffers so changes
> way to _prevent_ I/O to disk from the dirty shared buffers so changes
826c817
< tuple overhead
> per-tuple overhead
829,831c820,822
< This would involve using multiple threads or processes to do optimization,
< sorting, or execution of single query. The major advantage of such a
< feature would be to allow multiple CPUs to work together to process a
> This would involve using multiple threads or processes to do optimization,
> sorting, or execution of single query. The major advantage of such a
> feature would be to allow multiple CPUs to work together to process a
834c825
< * Research the use of larger pages sizes
> * Research the use of larger page sizes
842a834
> * Move some /contrib modules out to their own project sites
845d836
< * Improve access-permissions check on data directory in Cygwin (Tom)
847,848c838
< * Clarify use of 'application' and 'command' tags in SGML docs
< * Better document ability to build only certain interfaces (Marc)
> * Improve documentation to build only interfaces (Marc)
852,853d841
< * Research interaction of setitimer() and sleep() used by statement_timeout
< * Rename /scripts directory because they are all C programs now
856,857d843
< * Allow binaries to be statically linked so they are more easily relocated
< * Move some /contrib modules out to their own project sites
862c848
< o Remove per-backend parameter file and move into shared memory?
> o Remove per-backend parameter file and move into shared memory
877,878c863,864
< o Update clients to use data types, typmod, schema.table.column names of
< result sets using new query protocol
> o Update clients to use data types, typmod, schema.table.column names
> of result sets using new query protocol
900d885
< * Kris is Kris Jurka
910c895
< * Simon is Simon Riggs
> * Simon is Simon Riggs <simon@2ndquadrant.com>
913d897
< * Teodor is
2004-11-11 11:59:14 +08:00
|
|
|
way to _prevent_ I/O to disk from the dirty shared buffers so changes
|
2004-11-09 11:57:42 +08:00
|
|
|
could hit disk before WAL is written.
|
2004-08-01 13:15:58 +08:00
|
|
|
|
2003-02-18 10:49:30 +08:00
|
|
|
* Add a script to ask system configuration questions and tune postgresql.conf
|
2006-09-11 06:20:01 +08:00
|
|
|
* Consider ways of storing rows more compactly on disk
|
|
|
|
|
|
|
|
|
|
o Reduce the row header size?
|
2007-08-28 11:00:36 +08:00
|
|
|
o Consider reducing on-disk varlena length from four bytes to
|
2007-04-14 07:23:22 +08:00
|
|
|
two because a heap row cannot be more than 64k in length
|
2004-08-01 13:15:58 +08:00
|
|
|
|
2007-01-27 10:28:16 +08:00
|
|
|
* Consider increasing NUM_CLOG_BUFFERS
|
2008-03-12 09:03:04 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-08/msg00030.php
|
2008-03-12 09:08:32 +08:00
|
|
|
http://archives.postgresql.org/pgsql-performance/2007-08/msg00024.php
|
2008-03-12 09:03:04 +08:00
|
|
|
|
2008-03-26 09:49:51 +08:00
|
|
|
* Consider transaction start/end performance improvements
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-07/msg00948.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-03/msg00361.php
|
|
|
|
|
|
2007-02-20 05:08:48 +08:00
|
|
|
* Allow user configuration of TOAST thresholds
|
2007-02-20 05:07:25 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-02/msg00213.php
|
2008-03-12 09:21:25 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-08/msg00082.php
|
2007-02-20 05:07:25 +08:00
|
|
|
|
2007-03-27 23:36:40 +08:00
|
|
|
* Allow configuration of backend priorities via the operating system
|
|
|
|
|
|
|
|
|
|
Though backend priorities make priority inversion during lock
|
|
|
|
|
waits possible, research shows that this is not a huge problem.
|
2007-07-17 08:07:54 +08:00
|
|
|
|
2007-03-27 23:36:40 +08:00
|
|
|
http://archives.postgresql.org/pgsql-general/2007-02/msg00493.php
|
|
|
|
|
|
2008-03-19 07:35:21 +08:00
|
|
|
* Experiment with multi-threaded backend better I/O utilization
|
2007-12-22 05:20:27 +08:00
|
|
|
|
2008-03-19 07:35:21 +08:00
|
|
|
This would allow a single query to make use of multiple I/O channels
|
|
|
|
|
simultaneously. One idea is to create a background reader that can
|
|
|
|
|
pre-fetch sequential and index scan pages needed by other backends.
|
|
|
|
|
This could be expanded to allow concurrent reads from multiple devices
|
|
|
|
|
in a partitioned table.
|
|
|
|
|
|
|
|
|
|
* Experiment with multi-threaded backend better CPU utilization
|
|
|
|
|
|
|
|
|
|
This would allow several CPUs to be used for a single query, such as
|
|
|
|
|
for sorting or query execution.
|
2007-01-27 10:28:16 +08:00
|
|
|
|
2008-03-10 22:16:37 +08:00
|
|
|
* Consider increasing the minimum allowed number of shared buffers
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-bugs/2008-02/msg00157.php
|
|
|
|
|
|
2008-03-13 04:19:46 +08:00
|
|
|
* Expire published xmin for read-only and idle transactions
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-09/msg00343.php
|
2008-03-10 22:16:37 +08:00
|
|
|
|
2008-03-18 06:59:01 +08:00
|
|
|
* Consider if CommandCounterIncrement() can avoid its
|
|
|
|
|
AcceptInvalidationMessages() call
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-committers/2007-11/msg00585.php
|
2005-09-17 20:12:58 +08:00
|
|
|
|
2008-08-19 11:08:56 +08:00
|
|
|
* -Improve performance of shared invalidation queue for multiple CPUs
|
2008-03-22 09:44:42 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-performance/2008-01/msg00023.php
|
|
|
|
|
|
2008-03-18 08:43:01 +08:00
|
|
|
* Consider Cartesian joins when both relations are needed to form an
|
|
|
|
|
indexscan qualification for a third relation
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-performance/2007-12/msg00090.php
|
|
|
|
|
|
2008-03-19 02:40:42 +08:00
|
|
|
* Consider not storing a NULL bitmap on disk if all the NULLs are
|
|
|
|
|
trailing
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-12/msg00624.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-patches/2007-12/msg00109.php
|
|
|
|
|
|
2008-03-23 09:23:10 +08:00
|
|
|
* Sort large UPDATE/DELETEs so it is done in heap order
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-01/msg01119.php
|
|
|
|
|
|
2008-03-25 01:29:35 +08:00
|
|
|
* SMP scalability improvements
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-07/msg00439.php
|
2008-03-25 01:48:07 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-09/msg00206.php
|
2008-03-25 01:41:16 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-03/msg00361.php
|
2008-03-25 01:29:35 +08:00
|
|
|
|
2008-03-25 02:24:30 +08:00
|
|
|
* Research reducing deTOASTing in more places
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-09/msg00895.php
|
|
|
|
|
|
2008-03-28 10:36:04 +08:00
|
|
|
* Allow one transaction to see tuples using the snapshot of another
|
|
|
|
|
transaction
|
|
|
|
|
|
|
|
|
|
This would assist multiple backends in working together.
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-01/msg00400.php
|
2008-03-19 02:40:42 +08:00
|
|
|
|
2008-07-15 21:55:20 +08:00
|
|
|
* Consider decreasing the I/O caused by updating tuple hint bits
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-05/msg00847.php
|
2008-08-01 04:47:30 +08:00
|
|
|
http://archives.postgresql.org/pgsql-patches/2008-07/msg00199.php
|
2008-07-15 21:55:20 +08:00
|
|
|
|
|
|
|
|
|
2008-03-07 01:19:38 +08:00
|
|
|
|
2002-04-26 04:20:50 +08:00
|
|
|
Source Code
|
2002-02-04 03:24:30 +08:00
|
|
|
===========
|
|
|
|
|
|
1999-11-10 09:22:37 +08:00
|
|
|
* Add use of 'const' for variables in source tree
|
2008-01-24 14:23:33 +08:00
|
|
|
* Move some things from contrib into main tree
|
2005-08-24 22:05:37 +08:00
|
|
|
* %Remove warnings created by -Wcast-align
|
2001-03-29 08:12:57 +08:00
|
|
|
* Move platform-specific ps status display info from ps_status.c to ports
|
2002-01-23 05:55:06 +08:00
|
|
|
* Add optional CRC checksum to heap and index pages
|
2008-08-19 11:08:56 +08:00
|
|
|
* Improve documentation to build only interfaces
|
2002-02-22 08:10:11 +08:00
|
|
|
* Remove or relicense modules that are not under the BSD license, if possible
|
2002-11-02 13:42:01 +08:00
|
|
|
* Acquire lock on a relation before building a relcache entry for it
|
2004-11-29 11:17:30 +08:00
|
|
|
* Allow cross-compiling by generating the zic database on the target system
|
2006-02-26 09:21:57 +08:00
|
|
|
* Improve NLS maintenance of libpgport messages linked onto applications
|
2008-01-24 14:23:33 +08:00
|
|
|
* Clean up casting in contrib/isn
|
2007-02-14 12:24:42 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-11/msg00245.php
|
|
|
|
|
|
2008-05-09 11:58:41 +08:00
|
|
|
* Improve the /contrib installation experience
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-04/msg00132.php
|
|
|
|
|
|
2005-09-03 04:11:34 +08:00
|
|
|
* Use UTF8 encoding for NLS messages so all server encodings can
|
|
|
|
|
read them properly
|
2005-09-17 01:37:10 +08:00
|
|
|
* Update Bonjour to work with newer cross-platform SDK
|
2007-02-14 02:08:39 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-09/msg02238.php
|
2007-02-14 07:23:11 +08:00
|
|
|
http://archives.postgresql.org/pgsql-patches/2006-10/msg00048.php
|
2007-02-14 02:08:39 +08:00
|
|
|
|
2006-05-30 18:21:12 +08:00
|
|
|
* Consider GnuTLS if OpenSSL license becomes a problem
|
|
|
|
|
|
2006-06-09 00:07:23 +08:00
|
|
|
http://archives.postgresql.org/pgsql-patches/2006-05/msg00040.php
|
2006-12-29 04:51:13 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-12/msg01213.php
|
2005-07-31 11:08:35 +08:00
|
|
|
|
2006-12-15 21:28:54 +08:00
|
|
|
* Consider changing documentation format from SGML to XML
|
2006-12-15 11:01:20 +08:00
|
|
|
|
2006-12-15 21:28:54 +08:00
|
|
|
http://archives.postgresql.org/pgsql-docs/2006-12/msg00152.php
|
2006-12-15 11:01:20 +08:00
|
|
|
|
2007-02-07 00:44:14 +08:00
|
|
|
* Consider making NAMEDATALEN more configurable in future releases
|
2007-08-28 11:00:36 +08:00
|
|
|
* Update our code to handle 64-bit timezone files to match the zic
|
2007-02-14 01:03:16 +08:00
|
|
|
source code, which now uses them
|
2007-05-13 06:10:40 +08:00
|
|
|
* Have configure choose integer datetimes by default
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-patches/2007-05/msg00046.php
|
2006-12-15 11:01:20 +08:00
|
|
|
|
2007-05-18 07:42:33 +08:00
|
|
|
* Support scoped IPv6 addresses
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-bugs/2007-05/msg00111.php
|
|
|
|
|
|
2007-05-31 04:26:06 +08:00
|
|
|
* Consider allowing 64-bit integers and floats to be passed by value on
|
|
|
|
|
64-bit platforms
|
|
|
|
|
|
|
|
|
|
Also change 32-bit floats (float4) to be passed by value at the same
|
|
|
|
|
time.
|
|
|
|
|
|
2008-03-12 05:13:13 +08:00
|
|
|
* Research use of signals and sleep wake ups
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-07/msg00003.php
|
2007-05-31 04:00:35 +08:00
|
|
|
|
2008-03-12 05:25:02 +08:00
|
|
|
* Add automated check for invalid C++ source code constructs
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-patches/2007-07/msg00056.php
|
|
|
|
|
|
2008-03-12 09:35:00 +08:00
|
|
|
* Consider simplifying how memory context resets handle child contexts
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-patches/2007-08/msg00067.php
|
|
|
|
|
|
2008-03-13 02:32:29 +08:00
|
|
|
* Remove use of MAKE_PTR and MAKE_OFFSET macros
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-general/2007-08/msg01510.php
|
|
|
|
|
|
2008-03-22 04:00:53 +08:00
|
|
|
* Convert single quotes to apostrophes in the PDF documentation
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-docs/2007-12/msg00059.php
|
|
|
|
|
|
2008-03-25 08:02:03 +08:00
|
|
|
* Create three versions of libpgport to simplify client code
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-10/msg00154.php
|
|
|
|
|
|
2008-03-25 08:05:10 +08:00
|
|
|
* Remove old-style routines for manipulating tuples
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-10/msg00851.php
|
2008-03-25 08:02:03 +08:00
|
|
|
|
2008-05-08 10:24:26 +08:00
|
|
|
* Improve detection of shared memory segments being used by others
|
|
|
|
|
by checking the SysV shared memory field 'nattch'
|
2008-03-25 10:11:22 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-01/msg00656.php
|
2008-05-08 10:24:26 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-01/msg00673.php
|
2008-03-25 10:11:22 +08:00
|
|
|
|
2008-04-17 01:25:56 +08:00
|
|
|
* Implement the non-threaded Avahi service discovery protocol
|
2008-03-22 04:00:53 +08:00
|
|
|
|
2008-04-17 01:25:56 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-02/msg00939.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-patches/2008-02/msg00097.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-03/msg01211.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-patches/2008-04/msg00001.php
|
2006-06-15 01:59:33 +08:00
|
|
|
|
2008-06-24 05:35:35 +08:00
|
|
|
* Implement a module capability for loading /contrib-style extensions
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-patches/2008-04/msg00164.php
|
|
|
|
|
|
2008-06-27 10:38:29 +08:00
|
|
|
* Fix system views like pg_stat_all_tables to use set-returning
|
|
|
|
|
functions, rather than views of per-column functions
|
|
|
|
|
|
2008-08-14 09:57:42 +08:00
|
|
|
* Allow table and index WITH options to be specified via hooks, for use
|
|
|
|
|
with plugins like GiST index methods
|
2008-06-24 05:35:35 +08:00
|
|
|
|
2004-10-09 00:28:32 +08:00
|
|
|
* Win32
|
2005-07-05 01:43:42 +08:00
|
|
|
|
2004-10-09 00:28:32 +08:00
|
|
|
o Remove configure.in check for link failure when cause is found
|
|
|
|
|
o Remove readdir() errno patch when runtime/mingwex/dirent.c rev
|
|
|
|
|
1.4 is released
|
2008-05-31 23:05:46 +08:00
|
|
|
o -Remove psql newline patch when we find out why mingw outputs an
|
2004-10-09 00:28:32 +08:00
|
|
|
extra newline
|
|
|
|
|
o Allow psql to use readline once non-US code pages work with
|
|
|
|
|
backslashes
|
2004-12-03 07:11:30 +08:00
|
|
|
o Fix problem with shared memory on the Win32 Terminal Server
|
2008-03-13 02:33:54 +08:00
|
|
|
o Diagnose problem where shared memory can sometimes not be
|
|
|
|
|
attached by postmaster children
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-general/2007-08/msg01377.php
|
|
|
|
|
|
2006-06-09 00:07:23 +08:00
|
|
|
o Improve signal handling
|
|
|
|
|
|
2005-09-27 23:18:13 +08:00
|
|
|
http://archives.postgresql.org/pgsql-patches/2005-06/msg00027.php
|
2006-06-09 00:07:23 +08:00
|
|
|
|
2008-03-13 03:28:03 +08:00
|
|
|
o Convert MSVC build system to remove most batch files
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-08/msg00961.php
|
|
|
|
|
|
2008-03-22 03:34:33 +08:00
|
|
|
o Prevent SSL from sending network packets to avoid interference
|
|
|
|
|
with Win32 signal emulation
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2007-12/msg00455.php
|
|
|
|
|
|
2008-03-23 20:36:59 +08:00
|
|
|
o Support pgxs when using MSVC
|
2008-03-23 07:49:22 +08:00
|
|
|
|
2008-03-23 08:14:41 +08:00
|
|
|
o Fix MSVC NLS support, like for to_char()
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-02/msg00485.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-patches/2008-02/msg00038.php
|
|
|
|
|
|
2008-03-25 20:55:38 +08:00
|
|
|
o Find a correct rint() substitute on Windows
|
2008-03-25 10:23:43 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-01/msg00808.php
|
|
|
|
|
|
2007-02-20 23:21:42 +08:00
|
|
|
|
2005-07-31 11:08:35 +08:00
|
|
|
|
2003-02-18 10:49:30 +08:00
|
|
|
* Wire Protocol Changes
|
2005-07-05 01:43:42 +08:00
|
|
|
|
2004-08-01 13:15:58 +08:00
|
|
|
o Allow dynamic character set handling
|
2003-02-18 10:49:30 +08:00
|
|
|
o Add decoded type, length, precision
|
2004-08-01 13:15:58 +08:00
|
|
|
o Use compression?
|
Cleaups:
< * Allow GRANT/REVOKE permissions to be given to all schema objects with one
> * Allow GRANT/REVOKE permissions to be applied to all schema objects with one
60c60
< specifications. This is because new databases are created by copying
> specifications. This is because new databases are created by copying
63c63
< directory would create a new database with tables that had incorrect
> directory would create a new database with tables that had incorrect
72c72
<
>
85c85
< By not showing commented-out variables, we discourage people from
> By not showing commented-out variables, we discourage people from
91c91
< * Allow point-in-time recovery to archive partially filled write-ahead
> * Allow point-in-time recovery to archive partially filled write-ahead
102c102
< Currently all schemas are owned by the super-user because they are
> Currently all schemas are owned by the super-user because they are
128c128
< * Allow INET subnet tests with non-constants to be indexed
> * Allow INET subnet tests using non-constants to be indexed
143,144c143,144
< * Allow to_char to print localized month names
< * Allow functions to have a search path specified at creation time
> * Allow to_char() to print localized month names
> * Allow functions to have a schema search path specified at creation time
146c146
< * Add GUC variable to allow output of interval values in ISO8601 format
> * Add a GUC variable to allow output of interval values in ISO8601 format
154,155c154,155
< * Prevent inet cast to cidr if the unmasked bits are not zero, or
< zero bits
> * Prevent INET cast to CIDR if the unmasked bits are not zero, or
> zero the bits
158c158
< o Allow nulls in arrays
> o Allow NULLs in arrays
160,161c160,161
< o Delay resolution of array expression type so assignment coercion
< can be performed on empty array expressions
> o Delay resolution of array expression's data type so assignment
> coercion can be performed on empty array expressions
218,219c218,219
< key, foreign key [inheritance]
< * UNIQUE INDEX on base column not honored on inserts/updates from
> key, foreign key
> * UNIQUE INDEX on base column not honored on INSERTs/UPDATEs from
221c221
< (dup) should fail [inheritance]
> (dup) should fail
246c246
< * Fetch heap pages matching index entries in sequential order [performance]
> * Fetch heap pages matching index entries in sequential order
307c307
< functionality in DELETE. It's been agreed that the keyword should
> functionality in DELETE. It's been agreed that the keyword should
318c318
< * Allow PREPARE to automatically determine parameter types based on the SQL
> * Allow PREPARE to automatically determine parameter types based on the SQL
340,342d339
< * Allow CREATE TABLE foo (f1 INT CHECK (f1 > 0) CHECK (f1 < 10)) to work
< by searching for non-conflicting constraint names, and prefix with
< table name?
347c344
< new database.
> a new database.
350,351d346
< * Ignore temporary tables from other sessions when processing
< inheritance?
354,355c349,351
< * Add a session mode to warn about non-standard SQL usage in queries
< * Add MERGE command that does UPDATE/DELETE, or on failure, INSERT (rules, triggers?)
> * Add a GUC variable to warn about non-standard SQL usage in queries
> * Add MERGE command that does UPDATE/DELETE, or on failure, INSERT (rules,
> triggers?)
357,359c353,356
< * Add NOVICE output level for helpful messages like automatic sequence/index creation
< * Add COMMENT ON for all cluster global objects (users, groups,
< databases and tablespaces)
> * Add NOVICE output level for helpful messages like automatic sequence/index
> creation
> * Add COMMENT ON for all cluster global objects (users, groups, databases
> and tablespaces)
363c360
< When enabled, this would allow errors in multi-statement transactions
> When enabled, this would allow errors in multi-statement transactions
417c414
< o Allow COPY to optionally include column headings as the first line
> o Allow COPY to optionally include column headings in the first line
450c447
<
>
462c459
< o Handle references to temporary tables that are created, destroyed,
> o Handle references to temporary tables that are created, destroyed,
464c461
<
>
469d465
< o Improve PL/PgSQL exception handling using savepoints
488c484
<
>
503d498
<
518c513
< o Add pg_dumpall custom format dumps.
> o Add pg_dumpall custom format dumps.
520c515
< This is probably best done by combining pg_dump and pg_dumpall
> This is probably best done by combining pg_dump and pg_dumpall
532d526
< o Improve error handling (?)
555c549
< Adding shared locks requires recording the table/rows numbers in a
> Adding shared locks requires recording the table/rows numbers in a
643c637
< Posix_fadvise() can control both sequential/random file caching and
> Posix_fadvise() can control both sequential/random file caching and
703c697
< from distributted.net, http://www1.distributed.net/source,
> from distributted.net, http://www1.distributed.net/source,
729c723
< * Add connection pooling [pool]
> * Add connection pooling
755d748
<
759c752
<
>
768c761
< so an abrupt operating system restart might lose a few seconds of
> so an abrupt operating system restart might lose a few seconds of
785c778
< * Add utility to compute accurate random_page_cost value
> * Create utility to compute accurate random_page_cost value
787,789d779
< * Allow sorting, temp files, temp tables to use multiple work directories
<
< This allows the I/O load to be spread across multiple disk drives.
795a786
>
808,809c799,800
<
< * Use mmap() rather than SYSV shared memory or to write WAL files (?) [mmap]
>
> * Use mmap() rather than SYSV shared memory or to write WAL files (?)
812,813c803,804
< portability issues. Anonymous mmap (or mmap to /dev/zero) is required
< to prevent I/O overhead.
> portability issues. Anonymous mmap (or mmap to /dev/zero) is required
> to prevent I/O overhead.
817,819c808,810
< Doing I/O to large tables would consume a lot of address space or
< require frequent mapping/unmapping. Extending the file also causes
< mapping problems that might require mapping only individual pages,
> Doing I/O to large tables would consume a lot of address space or
> require frequent mapping/unmapping. Extending the file also causes
> mapping problems that might require mapping only individual pages,
821c812
< way to _prevent_ I/O to disk from the dirty shared buffers so changes
> way to _prevent_ I/O to disk from the dirty shared buffers so changes
826c817
< tuple overhead
> per-tuple overhead
829,831c820,822
< This would involve using multiple threads or processes to do optimization,
< sorting, or execution of single query. The major advantage of such a
< feature would be to allow multiple CPUs to work together to process a
> This would involve using multiple threads or processes to do optimization,
> sorting, or execution of single query. The major advantage of such a
> feature would be to allow multiple CPUs to work together to process a
834c825
< * Research the use of larger pages sizes
> * Research the use of larger page sizes
842a834
> * Move some /contrib modules out to their own project sites
845d836
< * Improve access-permissions check on data directory in Cygwin (Tom)
847,848c838
< * Clarify use of 'application' and 'command' tags in SGML docs
< * Better document ability to build only certain interfaces (Marc)
> * Improve documentation to build only interfaces (Marc)
852,853d841
< * Research interaction of setitimer() and sleep() used by statement_timeout
< * Rename /scripts directory because they are all C programs now
856,857d843
< * Allow binaries to be statically linked so they are more easily relocated
< * Move some /contrib modules out to their own project sites
862c848
< o Remove per-backend parameter file and move into shared memory?
> o Remove per-backend parameter file and move into shared memory
877,878c863,864
< o Update clients to use data types, typmod, schema.table.column names of
< result sets using new query protocol
> o Update clients to use data types, typmod, schema.table.column names
> of result sets using new query protocol
900d885
< * Kris is Kris Jurka
910c895
< * Simon is Simon Riggs
> * Simon is Simon Riggs <simon@2ndquadrant.com>
913d897
< * Teodor is
2004-11-11 11:59:14 +08:00
|
|
|
o Update clients to use data types, typmod, schema.table.column names
|
Update wording, query -> statement:
< * %Allow pooled connections to list all prepared queries
> * %Allow pooled connections to list all prepared statements
28c28
< the queries prepared in the current session.
> the statements prepared in the current session.
143c143
< o Allow a warm standby system to also allow read-only queries
> o Allow a warm standby system to also allow read-only statements
404c404
< * Add GUC to issue notice about queries that use unjoined tables
> * Add GUC to issue notice about statements that use unjoined tables
490c490
< Another idea would be to allow actual SELECT queries in a COPY.
> Another idea would be to allow actual SELECT statements in a COPY.
554c554
< o Allow function argument names to be queries from PL/PgSQL
> o Allow function argument names to be statements from PL/PgSQL
591c591
< o Improve psql's handling of multi-line queries
> o Improve psql's handling of multi-line statements
< Currently, while \e saves a single query as one entry, interactive
< queries are saved one line at a time. Ideally all queries
> Currently, while \e saves a single statement as one entry, interactive
> statements are saved one line at a time. Ideally all statements
665c665
< o Allow query results to be automatically batched to the client
> o Allow statement results to be automatically batched to the client
667c667
< Currently, all query results are transfered to the libpq
> Currently, all statement results are transfered to the libpq
672c672
< One complexity is that a query like SELECT 1/col could error
> One complexity is that a statement like SELECT 1/col could error
739c739
< * Allow queries across databases or servers with transaction
> * Allow statements across databases or servers with transaction
< inheritance, allow it to work for UPDATE and DELETE queries, and allow
< it to be used for all queries with little performance impact
> inheritance, allow it to work for UPDATE and DELETE statements, and allow
> it to be used for all statements with little performance impact
876c876
< * Consider automatic caching of queries at various levels:
> * Consider automatic caching of statements at various levels:
947c947
< a single session using multiple threads to execute a query faster.
> a single session using multiple threads to execute a statement faster.
1025c1025
< * Log queries where the optimizer row estimates were dramatically
> * Log statements where the optimizer row estimates were dramatically
1146c1146
< of result sets using new query protocol
> of result sets using new statement protocol
2005-12-12 21:36:36 +08:00
|
|
|
of result sets using new statement protocol
|
2003-02-18 10:49:30 +08:00
|
|
|
|
2004-08-01 13:15:58 +08:00
|
|
|
|
2006-10-02 22:00:04 +08:00
|
|
|
Exotic Features
|
|
|
|
|
===============
|
|
|
|
|
|
|
|
|
|
* Add pre-parsing phase that converts non-ISO syntax to supported
|
|
|
|
|
syntax
|
|
|
|
|
|
|
|
|
|
This could allow SQL written for other databases to run without
|
|
|
|
|
modification.
|
|
|
|
|
|
|
|
|
|
* Allow plug-in modules to emulate features from other databases
|
2008-08-19 11:08:56 +08:00
|
|
|
* Add features of Oracle-style packages
|
2006-10-02 22:00:04 +08:00
|
|
|
|
2008-01-30 00:11:19 +08:00
|
|
|
A package would be a schema with session-local variables,
|
|
|
|
|
public/private functions, and initialization functions. It
|
|
|
|
|
is also possible to implement these capabilities
|
|
|
|
|
in any schema and not use a separate "packages"
|
|
|
|
|
syntax at all.
|
2006-10-02 22:00:04 +08:00
|
|
|
|
2008-01-30 00:11:19 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-08/msg00384.php
|
2006-10-02 22:00:04 +08:00
|
|
|
|
|
|
|
|
* Consider allowing control of upper/lower case folding of unquoted
|
|
|
|
|
identifiers
|
|
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2004-04/msg00818.php
|
2006-11-15 06:26:49 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-10/msg01527.php
|
2008-03-28 04:31:04 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-03/msg00849.php
|
2008-07-15 01:54:54 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-07/msg00415.php
|
2006-10-02 22:00:04 +08:00
|
|
|
|
2008-01-30 00:13:09 +08:00
|
|
|
* Add autonomous transactions
|
2008-01-30 00:11:19 +08:00
|
|
|
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2008-01/msg00893.php
|
|
|
|
|
|
|
|
|
|
|
2006-10-02 22:00:04 +08:00
|
|
|
|
2006-08-10 00:35:51 +08:00
|
|
|
Features We Do _Not_ Want
|
|
|
|
|
=========================
|
|
|
|
|
|
2006-08-24 02:32:02 +08:00
|
|
|
* All backends running as threads in a single process (not wanted)
|
2006-08-10 00:35:51 +08:00
|
|
|
|
|
|
|
|
This eliminates the process protection we get from the current setup.
|
|
|
|
|
Thread creation is usually the same overhead as process creation on
|
|
|
|
|
modern systems, so it seems unwise to use a pure threaded model.
|
|
|
|
|
|
2006-08-24 02:32:02 +08:00
|
|
|
* Optimizer hints (not wanted)
|
2006-08-10 00:35:51 +08:00
|
|
|
|
|
|
|
|
Optimizer hints are used to work around problems in the optimizer. We
|
|
|
|
|
would rather have the problems reported and fixed.
|
2007-07-17 08:07:54 +08:00
|
|
|
|
2006-08-10 00:35:51 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-08/msg00506.php
|
2006-10-13 05:40:15 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-10/msg00517.php
|
|
|
|
|
http://archives.postgresql.org/pgsql-hackers/2006-10/msg00663.php
|
2006-08-10 00:35:51 +08:00
|
|
|
|
2006-08-24 02:32:02 +08:00
|
|
|
|
|
|
|
|
Because we support postfix operators, it isn't possible to make AS
|
|
|
|
|
optional and continue to use bison.
|
2008-01-04 23:58:27 +08:00
|
|
|
http://archives.postgresql.org/pgsql-hackers/2003-04/msg00436.php
|
2007-07-17 08:07:54 +08:00
|
|
|
|
2006-08-24 02:32:02 +08:00
|
|
|
http://archives.postgresql.org/pgsql-sql/2006-08/msg00164.php
|
|
|
|
|
|
2006-12-15 23:40:52 +08:00
|
|
|
* Embedded server (not wanted)
|
|
|
|
|
|
2006-12-17 11:57:07 +08:00
|
|
|
While PostgreSQL clients runs fine in limited-resource environments, the
|
2006-12-15 23:40:52 +08:00
|
|
|
server requires multiple processes and a stable pool of resources to
|
2007-08-28 11:00:36 +08:00
|
|
|
run reliabily and efficiently. Stripping down the PostgreSQL server
|
|
|
|
|
to run in the same process address space as the client application
|
2006-12-15 23:40:52 +08:00
|
|
|
would add too much complexity and failure cases.
|
