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Add:
> * Allow multiple indexes to be created concurrently, ideally via a > single heap scan, and have a restore of a pg_dump somehow use it > > http://archives.postgresql.org/pgsql-general/2007-05/msg01274.php Small blank line additions.
This commit is contained in:
Bruce Momjian
parent
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doc/TODO
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doc/TODO
@ -1,7 +1,7 @@
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PostgreSQL TODO List
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====================
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Current maintainer: Bruce Momjian (bruce@momjian.us)
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Last updated: Sat Jul 7 20:41:05 EDT 2007
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Last updated: Mon Jul 16 20:07:17 EDT 2007
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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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@ -34,6 +34,7 @@ Administration
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has been reported in 8.0. A possible cause was fixed in 8.1, but
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it is unknown whether other problems exist. This item mostly
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requires additional testing rather than of writing any new code.
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http://archives.postgresql.org/pgsql-hackers/2006-08/msg00174.php
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* Set proper permissions on non-system schemas during db creation
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@ -63,6 +64,7 @@ Administration
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creation of rules for INSERT/UPDATE/DELETE, and constraints for
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rapid partition selection. Options could include range and hash
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partition selection.
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http://archives.postgresql.org/pgsql-hackers/2007-03/msg00375.php
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http://archives.postgresql.org/pgsql-hackers/2007-04/msg00151.php
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@ -154,6 +156,7 @@ Administration
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[pitr]
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This is useful for checking PITR recovery.
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http://archives.postgresql.org/pgsql-hackers/2007-03/msg00050.php
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o %Create dump tool for write-ahead logs for use in determining
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@ -347,7 +350,7 @@ Functions
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* Add missing parameter handling in to_char()
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http://archives.postgresql.org/pgsql-hackers/2005-12/msg00948.php
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http://archives.postgresql.org/pgsql-hackers/2005-12/msg00948.php
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* Allow functions to have a schema search path specified at creation time
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* Allow substring/replace() to get/set bit values
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@ -414,6 +417,7 @@ Multi-Language Support
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* Allow encoding on a per-column basis optionally using the ICU library:
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Right now only one encoding is allowed per database. [locale]
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http://archives.postgresql.org/pgsql-hackers/2005-03/msg00932.php
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http://archives.postgresql.org/pgsql-patches/2005-08/msg00309.php
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http://archives.postgresql.org/pgsql-patches/2006-03/msg00233.php
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@ -439,6 +443,7 @@ Multi-Language Support
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Currently client_encoding is set in postgresql.conf, which
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defaults to the server encoding.
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http://archives.postgresql.org/pgsql-hackers/2006-08/msg01696.php
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* Fix cases where invalid byte encodings are accepted by the database,
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@ -454,6 +459,7 @@ Views / Rules
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We can only auto-create rules for simple views. For more complex
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cases users will still have to write rules manually.
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http://archives.postgresql.org/pgsql-hackers/2006-03/msg00586.php
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http://archives.postgresql.org/pgsql-patches/2006-08/msg00255.php
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@ -516,6 +522,7 @@ SQL Commands
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so duplicate checking can be easily performed. It is possible to
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do it without a unique index if we require the user to LOCK the table
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before the MERGE.
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http://archives.postgresql.org/pgsql-hackers/2005-11/msg00501.php
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http://archives.postgresql.org/pgsql-hackers/2005-11/msg00536.php
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@ -575,6 +582,7 @@ SQL Commands
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http://archives.postgresql.org/pgsql-hackers/2007-01/msg00133.php
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o Have WITH CONSTRAINTS also create constraint indexes
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http://archives.postgresql.org/pgsql-patches/2007-04/msg00149.php
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* UPDATE
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@ -718,6 +726,7 @@ SQL Commands
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a unique index. Currently, uniqueness checks are done while the
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command is being executed, rather than at the end of the statement
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or transaction.
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http://people.planetpostgresql.org/greg/index.php?/archives/2006/06/10.html
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http://archives.postgresql.org/pgsql-hackers/2006-09/msg01458.php
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@ -740,6 +749,7 @@ SQL Commands
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is also possible to implement these capabilities
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in all schemas and not use a separate "packages"
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syntax at all.
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http://archives.postgresql.org/pgsql-hackers/2006-08/msg00384.php
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o Allow handling of %TYPE arrays, e.g. tab.col%TYPE[]
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@ -771,6 +781,7 @@ SQL Commands
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Because a row is not scalar, do not allow assignment
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from NULL-valued scalars.
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http://archives.postgresql.org/pgsql-hackers/2006-10/msg00070.php
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o Other
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@ -862,7 +873,7 @@ Clients
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code
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o Allow selection of individual object(s) of all types, not just
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tables
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o In a selective dump, allow dumping of an object and all its
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o In a selective dump, allow dumping of an object and all its
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dependencies
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o Add options like pg_restore -l and -L to pg_dump
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o Stop dumping CASCADE on DROP TYPE commands in clean mode
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@ -1012,6 +1023,11 @@ Indexes
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have this complication. This would allow index compaction without
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downtime.
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* Allow multiple indexes to be created concurrently, ideally via a
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single heap scan, and have a restore of a pg_dump somehow use it
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http://archives.postgresql.org/pgsql-general/2007-05/msg01274.php
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* Inheritance
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@ -1142,6 +1158,7 @@ Vacuum
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For large table adjustments during VACUUM FULL, it is faster to cluster
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or reindex rather than update the index. Also, index updates can bloat
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the index.
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http://archives.postgresql.org/pgsql-hackers/2007-03/msg00024.php
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http://archives.postgresql.org/pgsql-performance/2007-05/msg00296.php
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@ -1188,6 +1205,7 @@ Vacuum
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counters, are difficult for VACUUM to handle efficiently. This method
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is possible for same-page updates because a single index row can be
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used to point to both old and new values.
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http://archives.postgresql.org/pgsql-hackers/2006-06/msg01305.php
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http://archives.postgresql.org/pgsql-hackers/2006-06/msg01534.php
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@ -1371,6 +1389,7 @@ Miscellaneous Performance
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Async I/O allows multiple I/O requests to be sent to the disk with
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results coming back asynchronously.
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http://archives.postgresql.org/pgsql-hackers/2006-10/msg00820.php
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* Use mmap() rather than SYSV shared memory or to write WAL files?
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@ -1408,6 +1427,7 @@ Miscellaneous Performance
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Though backend priorities make priority inversion during lock
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waits possible, research shows that this is not a huge problem.
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http://archives.postgresql.org/pgsql-general/2007-02/msg00493.php
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* Consider reducing memory used for shared buffer reference count
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@ -1563,6 +1583,7 @@ Features We Do _Not_ Want
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Optimizer hints are used to work around problems in the optimizer. We
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would rather have the problems reported and fixed.
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http://archives.postgresql.org/pgsql-hackers/2006-08/msg00506.php
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http://archives.postgresql.org/pgsql-hackers/2006-10/msg00517.php
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http://archives.postgresql.org/pgsql-hackers/2006-10/msg00663.php
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@ -1571,6 +1592,7 @@ Features We Do _Not_ Want
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Because we support postfix operators, it isn't possible to make AS
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optional and continue to use bison.
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http://archives.postgresql.org/pgsql-sql/2006-08/msg00164.php
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* Embedded server (not wanted)
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@ -8,7 +8,7 @@
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<body bgcolor="#FFFFFF" text="#000000" link="#FF0000" vlink="#A00000" alink="#0000FF">
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<h1><a name="section_1">PostgreSQL TODO List</a></h1>
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<p>Current maintainer: Bruce Momjian (<a href="mailto:bruce@momjian.us">bruce@momjian.us</a>)<br/>
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Last updated: Sat Jul 7 20:41:05 EDT 2007
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Last updated: Mon Jul 16 20:07:17 EDT 2007
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</p>
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<p>The most recent version of this document can be viewed at<br/>
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<a href="http://www.postgresql.org/docs/faqs.TODO.html">http://www.postgresql.org/docs/faqs.TODO.html</a>.
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@ -38,7 +38,8 @@ first. There is also a developer's wiki at<br/>
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has been reported in 8.0. A possible cause was fixed in 8.1, but
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it is unknown whether other problems exist. This item mostly
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requires additional testing rather than of writing any new code.
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<a href="http://archives.postgresql.org/pgsql-hackers/2006-08/msg00174.php">http://archives.postgresql.org/pgsql-hackers/2006-08/msg00174.php</a>
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</p>
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<p> <a href="http://archives.postgresql.org/pgsql-hackers/2006-08/msg00174.php">http://archives.postgresql.org/pgsql-hackers/2006-08/msg00174.php</a>
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</p>
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</li><li>Set proper permissions on non-system schemas during db creation
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<p> Currently all schemas are owned by the super-user because they are copied
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@ -64,7 +65,8 @@ first. There is also a developer's wiki at<br/>
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creation of rules for INSERT/UPDATE/DELETE, and constraints for
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rapid partition selection. Options could include range and hash
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partition selection.
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<a href="http://archives.postgresql.org/pgsql-hackers/2007-03/msg00375.php">http://archives.postgresql.org/pgsql-hackers/2007-03/msg00375.php</a>
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</p>
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<p> <a href="http://archives.postgresql.org/pgsql-hackers/2007-03/msg00375.php">http://archives.postgresql.org/pgsql-hackers/2007-03/msg00375.php</a>
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<a href="http://archives.postgresql.org/pgsql-hackers/2007-04/msg00151.php">http://archives.postgresql.org/pgsql-hackers/2007-04/msg00151.php</a>
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</p>
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</li><li>Allow auto-selection of partitioned tables for min/max() operations
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@ -142,7 +144,8 @@ first. There is also a developer's wiki at<br/>
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<li>Allow a warm standby system to also allow read-only statements
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[<a href="http://momjian.postgresql.org/cgi-bin/pgtodo?pitr">pitr</a>]
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<p> This is useful for checking PITR recovery.
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<a href="http://archives.postgresql.org/pgsql-hackers/2007-03/msg00050.php">http://archives.postgresql.org/pgsql-hackers/2007-03/msg00050.php</a>
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</p>
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<p> <a href="http://archives.postgresql.org/pgsql-hackers/2007-03/msg00050.php">http://archives.postgresql.org/pgsql-hackers/2007-03/msg00050.php</a>
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</p>
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</li><li>%Create dump tool for write-ahead logs for use in determining
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transaction id for point-in-time recovery
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@ -313,11 +316,9 @@ first. There is also a developer's wiki at<br/>
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<p> <a href="http://archives.postgresql.org/pgsql-hackers/2007-02/msg00915.php">http://archives.postgresql.org/pgsql-hackers/2007-02/msg00915.php</a>
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</p>
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</li><li>Add missing parameter handling in to_char()
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</li></ul>
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<p> <a href="http://archives.postgresql.org/pgsql-hackers/2005-12/msg00948.php">http://archives.postgresql.org/pgsql-hackers/2005-12/msg00948.php</a>
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<p> <a href="http://archives.postgresql.org/pgsql-hackers/2005-12/msg00948.php">http://archives.postgresql.org/pgsql-hackers/2005-12/msg00948.php</a>
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</p>
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<ul>
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<li>Allow functions to have a schema search path specified at creation time
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</li><li>Allow functions to have a schema search path specified at creation time
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</li><li>Allow substring/replace() to get/set bit values
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</li><li>Allow to_char() on interval values to accumulate the highest unit
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requested
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@ -372,7 +373,8 @@ first. There is also a developer's wiki at<br/>
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</p>
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</li><li>Allow encoding on a per-column basis optionally using the ICU library:
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<p> Right now only one encoding is allowed per database. [<a href="http://momjian.postgresql.org/cgi-bin/pgtodo?locale">locale</a>]
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<a href="http://archives.postgresql.org/pgsql-hackers/2005-03/msg00932.php">http://archives.postgresql.org/pgsql-hackers/2005-03/msg00932.php</a>
|
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</p>
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<p> <a href="http://archives.postgresql.org/pgsql-hackers/2005-03/msg00932.php">http://archives.postgresql.org/pgsql-hackers/2005-03/msg00932.php</a>
|
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<a href="http://archives.postgresql.org/pgsql-patches/2005-08/msg00309.php">http://archives.postgresql.org/pgsql-patches/2005-08/msg00309.php</a>
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<a href="http://archives.postgresql.org/pgsql-patches/2006-03/msg00233.php">http://archives.postgresql.org/pgsql-patches/2006-03/msg00233.php</a>
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<a href="http://archives.postgresql.org/pgsql-hackers/2006-09/msg00662.php">http://archives.postgresql.org/pgsql-hackers/2006-09/msg00662.php</a>
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@ -394,7 +396,8 @@ first. There is also a developer's wiki at<br/>
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</li><li>Set client encoding based on the client operating system encoding
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<p> Currently client_encoding is set in postgresql.conf, which
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defaults to the server encoding.
|
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<a href="http://archives.postgresql.org/pgsql-hackers/2006-08/msg01696.php">http://archives.postgresql.org/pgsql-hackers/2006-08/msg01696.php</a>
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</p>
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<p> <a href="http://archives.postgresql.org/pgsql-hackers/2006-08/msg01696.php">http://archives.postgresql.org/pgsql-hackers/2006-08/msg01696.php</a>
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</p>
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</li><li>Fix cases where invalid byte encodings are accepted by the database,
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but throw an error on SELECT
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@ -407,7 +410,8 @@ first. There is also a developer's wiki at<br/>
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<li>Automatically create rules on views so they are updateable, per SQL99
|
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<p> We can only auto-create rules for simple views. For more complex
|
||||
cases users will still have to write rules manually.
|
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<a href="http://archives.postgresql.org/pgsql-hackers/2006-03/msg00586.php">http://archives.postgresql.org/pgsql-hackers/2006-03/msg00586.php</a>
|
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</p>
|
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<p> <a href="http://archives.postgresql.org/pgsql-hackers/2006-03/msg00586.php">http://archives.postgresql.org/pgsql-hackers/2006-03/msg00586.php</a>
|
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<a href="http://archives.postgresql.org/pgsql-patches/2006-08/msg00255.php">http://archives.postgresql.org/pgsql-patches/2006-08/msg00255.php</a>
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</p>
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</li><li>Add the functionality for WITH CHECK OPTION clause of CREATE VIEW
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@ -461,7 +465,8 @@ first. There is also a developer's wiki at<br/>
|
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so duplicate checking can be easily performed. It is possible to
|
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do it without a unique index if we require the user to LOCK the table
|
||||
before the MERGE.
|
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<a href="http://archives.postgresql.org/pgsql-hackers/2005-11/msg00501.php">http://archives.postgresql.org/pgsql-hackers/2005-11/msg00501.php</a>
|
||||
</p>
|
||||
<p> <a href="http://archives.postgresql.org/pgsql-hackers/2005-11/msg00501.php">http://archives.postgresql.org/pgsql-hackers/2005-11/msg00501.php</a>
|
||||
<a href="http://archives.postgresql.org/pgsql-hackers/2005-11/msg00536.php">http://archives.postgresql.org/pgsql-hackers/2005-11/msg00536.php</a>
|
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</p>
|
||||
</li><li>Add NOVICE output level for helpful messages like automatic sequence/index
|
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@ -514,7 +519,8 @@ first. There is also a developer's wiki at<br/>
|
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<p> <a href="http://archives.postgresql.org/pgsql-hackers/2007-01/msg00133.php">http://archives.postgresql.org/pgsql-hackers/2007-01/msg00133.php</a>
|
||||
</p>
|
||||
</li><li>Have WITH CONSTRAINTS also create constraint indexes
|
||||
<a href="http://archives.postgresql.org/pgsql-patches/2007-04/msg00149.php">http://archives.postgresql.org/pgsql-patches/2007-04/msg00149.php</a>
|
||||
<p> <a href="http://archives.postgresql.org/pgsql-patches/2007-04/msg00149.php">http://archives.postgresql.org/pgsql-patches/2007-04/msg00149.php</a>
|
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</p>
|
||||
</li></ul>
|
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</li><li>UPDATE
|
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<ul>
|
||||
@ -640,7 +646,8 @@ first. There is also a developer's wiki at<br/>
|
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a unique index. Currently, uniqueness checks are done while the
|
||||
command is being executed, rather than at the end of the statement
|
||||
or transaction.
|
||||
<a href="http://people.planetpostgresql.org/greg/index.php?/archives/2006/06/10.html">http://people.planetpostgresql.org/greg/index.php?/archives/2006/06/10.html</a>
|
||||
</p>
|
||||
<p> <a href="http://people.planetpostgresql.org/greg/index.php?/archives/2006/06/10.html">http://people.planetpostgresql.org/greg/index.php?/archives/2006/06/10.html</a>
|
||||
<a href="http://archives.postgresql.org/pgsql-hackers/2006-09/msg01458.php">http://archives.postgresql.org/pgsql-hackers/2006-09/msg01458.php</a>
|
||||
</p>
|
||||
</li></ul>
|
||||
@ -661,7 +668,8 @@ first. There is also a developer's wiki at<br/>
|
||||
is also possible to implement these capabilities
|
||||
in all schemas and not use a separate "packages"
|
||||
syntax at all.
|
||||
<a href="http://archives.postgresql.org/pgsql-hackers/2006-08/msg00384.php">http://archives.postgresql.org/pgsql-hackers/2006-08/msg00384.php</a>
|
||||
</p>
|
||||
<p> <a href="http://archives.postgresql.org/pgsql-hackers/2006-08/msg00384.php">http://archives.postgresql.org/pgsql-hackers/2006-08/msg00384.php</a>
|
||||
</p>
|
||||
</li><li>Allow handling of %TYPE arrays, e.g. tab.col%TYPE[<a href="http://momjian.postgresql.org/cgi-bin/pgtodo?"></a>]
|
||||
</li><li>Allow listing of record column names, and access to
|
||||
@ -688,7 +696,8 @@ first. There is also a developer's wiki at<br/>
|
||||
and allow NULL tests on such variables
|
||||
<p> Because a row is not scalar, do not allow assignment
|
||||
from NULL-valued scalars.
|
||||
<a href="http://archives.postgresql.org/pgsql-hackers/2006-10/msg00070.php">http://archives.postgresql.org/pgsql-hackers/2006-10/msg00070.php</a>
|
||||
</p>
|
||||
<p> <a href="http://archives.postgresql.org/pgsql-hackers/2006-10/msg00070.php">http://archives.postgresql.org/pgsql-hackers/2006-10/msg00070.php</a>
|
||||
</p>
|
||||
</li></ul>
|
||||
</li><li>Other
|
||||
@ -772,7 +781,7 @@ first. There is also a developer's wiki at<br/>
|
||||
code
|
||||
</li><li>Allow selection of individual object(s) of all types, not just
|
||||
tables
|
||||
</li><li>In a selective dump, allow dumping of an object and all its
|
||||
</li><li>In a selective dump, allow dumping of an object and all its
|
||||
dependencies
|
||||
</li><li>Add options like pg_restore -l and -L to pg_dump
|
||||
</li><li>Stop dumping CASCADE on DROP TYPE commands in clean mode
|
||||
@ -902,6 +911,10 @@ first. There is also a developer's wiki at<br/>
|
||||
to replace the existing index file. CREATE INDEX CONCURRENTLY does not
|
||||
have this complication. This would allow index compaction without
|
||||
downtime.
|
||||
</p>
|
||||
</li><li>Allow multiple indexes to be created concurrently, ideally via a
|
||||
single heap scan, and have a restore of a pg_dump somehow use it
|
||||
<p> <a href="http://archives.postgresql.org/pgsql-general/2007-05/msg01274.php">http://archives.postgresql.org/pgsql-general/2007-05/msg01274.php</a>
|
||||
</p>
|
||||
</li><li>Inheritance
|
||||
<ul>
|
||||
@ -1017,7 +1030,8 @@ first. There is also a developer's wiki at<br/>
|
||||
<p> 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.
|
||||
<a href="http://archives.postgresql.org/pgsql-hackers/2007-03/msg00024.php">http://archives.postgresql.org/pgsql-hackers/2007-03/msg00024.php</a>
|
||||
</p>
|
||||
<p> <a href="http://archives.postgresql.org/pgsql-hackers/2007-03/msg00024.php">http://archives.postgresql.org/pgsql-hackers/2007-03/msg00024.php</a>
|
||||
<a href="http://archives.postgresql.org/pgsql-performance/2007-05/msg00296.php">http://archives.postgresql.org/pgsql-performance/2007-05/msg00296.php</a>
|
||||
</p>
|
||||
</li><li>Reduce lock time during VACUUM FULL by moving tuples with read lock,
|
||||
@ -1058,7 +1072,8 @@ first. There is also a developer's wiki at<br/>
|
||||
counters, are difficult for VACUUM to handle efficiently. This method
|
||||
is possible for same-page updates because a single index row can be
|
||||
used to point to both old and new values.
|
||||
<a href="http://archives.postgresql.org/pgsql-hackers/2006-06/msg01305.php">http://archives.postgresql.org/pgsql-hackers/2006-06/msg01305.php</a>
|
||||
</p>
|
||||
<p> <a href="http://archives.postgresql.org/pgsql-hackers/2006-06/msg01305.php">http://archives.postgresql.org/pgsql-hackers/2006-06/msg01305.php</a>
|
||||
<a href="http://archives.postgresql.org/pgsql-hackers/2006-06/msg01534.php">http://archives.postgresql.org/pgsql-hackers/2006-06/msg01534.php</a>
|
||||
</p>
|
||||
</li><li>Reuse index tuples that point to heap tuples that are not visible to
|
||||
@ -1220,7 +1235,8 @@ first. There is also a developer's wiki at<br/>
|
||||
<li>Do async I/O for faster random read-ahead of data
|
||||
<p> Async I/O allows multiple I/O requests to be sent to the disk with
|
||||
results coming back asynchronously.
|
||||
<a href="http://archives.postgresql.org/pgsql-hackers/2006-10/msg00820.php">http://archives.postgresql.org/pgsql-hackers/2006-10/msg00820.php</a>
|
||||
</p>
|
||||
<p> <a href="http://archives.postgresql.org/pgsql-hackers/2006-10/msg00820.php">http://archives.postgresql.org/pgsql-hackers/2006-10/msg00820.php</a>
|
||||
</p>
|
||||
</li><li>Use mmap() rather than SYSV shared memory or to write WAL files?
|
||||
<p> This would remove the requirement for SYSV SHM but would introduce
|
||||
@ -1253,7 +1269,8 @@ first. There is also a developer's wiki at<br/>
|
||||
</li><li>Allow configuration of backend priorities via the operating system
|
||||
<p> Though backend priorities make priority inversion during lock
|
||||
waits possible, research shows that this is not a huge problem.
|
||||
<a href="http://archives.postgresql.org/pgsql-general/2007-02/msg00493.php">http://archives.postgresql.org/pgsql-general/2007-02/msg00493.php</a>
|
||||
</p>
|
||||
<p> <a href="http://archives.postgresql.org/pgsql-general/2007-02/msg00493.php">http://archives.postgresql.org/pgsql-general/2007-02/msg00493.php</a>
|
||||
</p>
|
||||
</li><li>Consider reducing memory used for shared buffer reference count
|
||||
<p> <a href="http://archives.postgresql.org/pgsql-hackers/2007-01/msg00752.php">http://archives.postgresql.org/pgsql-hackers/2007-01/msg00752.php</a>
|
||||
@ -1387,14 +1404,16 @@ first. There is also a developer's wiki at<br/>
|
||||
</li><li>Optimizer hints (not wanted)
|
||||
<p> Optimizer hints are used to work around problems in the optimizer. We
|
||||
would rather have the problems reported and fixed.
|
||||
<a href="http://archives.postgresql.org/pgsql-hackers/2006-08/msg00506.php">http://archives.postgresql.org/pgsql-hackers/2006-08/msg00506.php</a>
|
||||
</p>
|
||||
<p> <a href="http://archives.postgresql.org/pgsql-hackers/2006-08/msg00506.php">http://archives.postgresql.org/pgsql-hackers/2006-08/msg00506.php</a>
|
||||
<a href="http://archives.postgresql.org/pgsql-hackers/2006-10/msg00517.php">http://archives.postgresql.org/pgsql-hackers/2006-10/msg00517.php</a>
|
||||
<a href="http://archives.postgresql.org/pgsql-hackers/2006-10/msg00663.php">http://archives.postgresql.org/pgsql-hackers/2006-10/msg00663.php</a>
|
||||
</p>
|
||||
</li><li>Allow AS in "SELECT col AS label" to be optional (not wanted)
|
||||
<p> Because we support postfix operators, it isn't possible to make AS
|
||||
optional and continue to use bison.
|
||||
<a href="http://archives.postgresql.org/pgsql-sql/2006-08/msg00164.php">http://archives.postgresql.org/pgsql-sql/2006-08/msg00164.php</a>
|
||||
</p>
|
||||
<p> <a href="http://archives.postgresql.org/pgsql-sql/2006-08/msg00164.php">http://archives.postgresql.org/pgsql-sql/2006-08/msg00164.php</a>
|
||||
</p>
|
||||
</li><li>Embedded server (not wanted)
|
||||
<p> While PostgreSQL clients runs fine in limited-resource environments, the
|
||||
|
||||
Loading…
Reference in New Issue
Block a user