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Update TODO list.
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TODO list for PostgreSQL
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========================
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Last updated: Tue Oct 5 17:11:29 EDT 1999
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Last updated: Wed Oct 6 09:35:16 EDT 1999
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Current maintainer: Bruce Momjian (maillist@candle.pha.pa.us)
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@ -20,7 +20,7 @@ RESOURCES
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* Elog() does not free all its memory(Jan)
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* spinlock stuck problem when elog(FATAL) and elog(ERROR) inside bufmgr
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* Recover or force failure when disk space is exhausted
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* -Recover or force failure when disk space is exhausted(Hiroshi)
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PARSER
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@ -29,13 +29,13 @@ PARSER
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* SELECT pg_class FROM pg_class generates strange error
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* Alter TABLE ADD COLUMN does not honor DEFAULT, add CONSTRAINT
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* Do not allow bpchar column creation without length
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* -Select a[1] FROM test fails, it needs test.a[1]
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* -Array index references without table name cause problems [array]
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* -Select a[1] FROM test fails, it needs test.a[1](Tom)
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* -Array index references without table name cause problems [array](Tom)
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* Update table SET table.value = 3 fails(SQL standard says this is OK)
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* Creating index of TIMESTAMP & RELTIME fails, or rename to DATETIME(Thomas)
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* SELECT foo UNION SELECT foo is incorrectly simplified to SELECT foo
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* -INSERT ... SELECT ... GROUP BY groups by target columns not source columns
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* -CREATE TABLE test (a char(5) DEFAULT text '', b int4) fails on INSERT
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* -INSERT ... SELECT ... GROUP BY groups by target columns not source columns(Tom)
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* -CREATE TABLE test (a char(5) DEFAULT text '', b int4) fails on INSERT(Tom)
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* UNION with LIMIT fails
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* Unique index on base column not honored on inserts from inherited table
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INSERT INTO inherit_table (unique_index_col) VALUES (dup) should fail
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@ -52,7 +52,7 @@ PARSER
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* prevent primary key of nine columns [primary]
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* SELECT COUNT('asdf') FROM pg_class WHERE oid=12 crashes
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* SELECT DISTINCT ON col1 col1 col2 FROM tab1 is broken [distinct]
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* -When using aggregates + GROUP BY, no rows in should yield no rows out
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* -When using aggregates + GROUP BY, no rows in should yield no rows out(Tom)
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VIEWS
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@ -79,8 +79,8 @@ URGENT
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* Add OUTER joins, left and right[outer](Thomas, Bruce)
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* Allow long tuples by chaining or auto-storing outside db (chaining,large objs)
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* Eliminate limits on query length
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* Fix memory leak for expressions?[memory](Tom?)
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* -Fix memory leak for aggregates?
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* Fix memory leak for expressions[memory](Tom?)
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* -Fix memory leak for aggregates(Tom)
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ADMIN
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@ -118,7 +118,7 @@ TYPES
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* Remove Money type, add money formatting for decimal type
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* Declare typein/out functions in pg_proc with a special "C string" data type
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* Add non-large-object binary field
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* -Add index on NUMERIC/DECIMAL type
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* -Add index on NUMERIC/DECIMAL type(Jan)
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* Make Absolutetime/Relativetime int4 because time_t can be int8 on some ports
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* Functions returning sets don't really work right[function]
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@ -133,7 +133,7 @@ INDEXES
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* Allow CREATE INDEX zman_index ON test (date_trunc( 'day', zman ) datetime_ops)
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fails index can't store constant parameters
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* Allow creation of functional indexes to use default types
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* Permissions on indexes - prevent them?
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* Permissions on indexes, prevent them?
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* Allow SQL function indexes
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* Add FILLFACTOR to index creation
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* Allow indexing of LIKE with localle character sets
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@ -152,7 +152,7 @@ COMMANDS
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* Allow ESCAPE '\' at the end of LIKE for ANSI compliance [like]
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* Rewrite the LIKE handling by rewriting the user string with the
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supplied ESCAPE [like]
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* -Move LIKE index optimization handling to the optimizer
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* -Move LIKE index optimization handling to the optimizer(Tom)
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* Allow RULE recompilation
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* Support UNION/INTERSECT/EXCEPT in sub-selects
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* Allow DELETE and UPDATE to use inheritance using tablename*
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@ -182,14 +182,14 @@ MISC
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* Create a background process for each database that runs while
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database is idle, finding superceeded rows, gathering stats and vacuuming
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* Add UNIQUE capability to non-btree indexes
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* -Certain indexes will not shrink, i.e. oid indexes with many inserts
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* -Certain indexes will not shrink, i.e. oid indexes with many inserts(Vadim)
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* Restore unused oid's on backend exit if no one else has gotten oids
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* Have UPDATE/DELETE clean out indexes
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* Allow WHERE restriction on ctid
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* Allow cursors to be DECLAREd/OPENed/CLOSEed outside transactions
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* Allow PQrequestCancel() to terminate when in waiting-for-lock state
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* -Transaction log, so re-do log can be on a separate disk by
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with after-row images(Vadim) [logging]
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with after-row images(Vadim) [logging](Vadim)
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* Populate backend status area and write program to dump status data
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* Make oid use unsigned int more reliably, pg_atoi()
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* Allow subqueries in target list
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@ -213,8 +213,8 @@ PERFORMANCE
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FSYNC
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* -Allow transaction commits with rollback with no-fsync performance [fsync]
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* -Prevent fsync in SELECT-only queries
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* -Allow transaction commits with rollback with no-fsync performance [fsync](Vadim)
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* -Prevent fsync in SELECT-only queries(Vadim)
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INDEXES
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@ -222,7 +222,7 @@ INDEXES
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* Pull requested data directly from indexes, bypassing heap data
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* Use index to restrict rows returned by multi-key index when used with
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non-consecutive keys or OR clauses, so fewer heap accesses
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* -Convert function(constant) into a constant for index use
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* -Convert function(constant) into a constant for index use(Tom)
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* Allow LIMIT ability on single-table queries that have no ORDER BY to use
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a matching index [limit]
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* Improve LIMIT processing by using index to limit rows processed [limit]
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@ -234,7 +234,7 @@ INDEXES
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* Improve _bt_binsrch() to handle equal keys better, remove _bt_firsteq()(Tom)
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* Allow SELECT * FROM tab WHERE int2col = 4 use int2col index, int8,
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float4, numeric/decimal too [optimizer]
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* -Allow optimizer to prefer plans that match ORDER BY
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* -Allow optimizer to prefer plans that match ORDER BY(Tom)
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CACHE
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@ -249,11 +249,11 @@ MISC
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* Allow compression of log and meta data
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* Allow char() not to use variable-sized header to reduce disk size
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* Do async I/O to do better read-ahead of data
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* -Fix memory exhaustion when using many OR's [cnfify]
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* -Fix memory exhaustion when using many OR's [cnfify](Tom)
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* Get faster regex() code from Henry Spencer <henry@zoo.utoronto.ca>
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when it is available
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* Use mmap() rather than SYSV shared memory(?)
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* -Process const = const parts of OR clause in separate pass
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* -Process const = const parts of OR clause in separate pass(Tom)
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* Make oid use oidin/oidout not int4in/int4out in pg_type.h
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* Improve Subplan list handling
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* Allow Subplans to use efficient joins(hash, merge) with upper variable
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