TODO list for PostgreSQL
========================
-Last updated: Sun Sep 26 23:23:58 EDT 1999
+Last updated: Mon Sep 27 11:20:02 EDT 1999
Current maintainer: Bruce Momjian (maillist@candle.pha.pa.us)
* SELECT pg_class FROM pg_class generates strange error
* Alter TABLE ADD COLUMN does not honor DEFAULT, add CONSTRAINT
* Do not allow bpchar column creation without length
-* Select a[1] FROM test fails, it needs test.a[1]
+* -Select a[1] FROM test fails, it needs test.a[1]
* -Array index references without table name cause problems [array]
-* Update table SET table.value = 3 fails
+* Update table SET table.value = 3 fails(SQL standard says this is OK)
* Creating index of TIMESTAMP & RELTIME fails, or rename to DATETIME(Thomas)
* SELECT foo UNION SELECT foo is incorrectly simplified to SELECT foo
* -INSERT ... SELECT ... GROUP BY groups by target columns not source columns
* prevent primary key of nine columns [primary]
* SELECT COUNT('asdf') FROM pg_class WHERE oid=12 crashes
* SELECT DISTINCT ON col1 col1 col2 FROM tab1 is broken [distinct]
+* -When using aggregates + GROUP BY, no rows in should yield no rows out
VIEWS
* Better interface for adding to pg_group
* More access control over who can create tables and access the database
-* Add syslog functionality
+* Test syslog functionality
* Allow elog() to return error codes, not just messages
* Allow international error message support and add error codes
* Generate postmaster pid file and remove flock/fcntl lock code [flock]
* Add ALTER TABLE DROP/ALTER COLUMN feature
* Allow CLUSTER on all tables at once, and improve CLUSTER, loses NOT
NULL specification on table [cluster]
-* Generate error on CREATE OPERATOR of ~~, ~ and and ~*
* Add SIMILAR TO to allow character classes, 'pg_[a-c]%'
* Auto-destroy sequence on DROP of table with SERIAL(Ryan)
* Allow LOCK TABLE tab1, tab2, tab3 so all tables locked in unison
* Allow ESCAPE '\' at the end of LIKE for ANSI compliance [like]
* Rewrite the LIKE handling by rewriting the user string with the
supplied ESCAPE [like]
-* Move LIKE index optimization handling to the optimizer
+* -Move LIKE index optimization handling to the optimizer
* Allow RULE recompilation
* Support UNION/INTERSECT/EXCEPT in sub-selects
* Allow psql \copy to allow delimiters
* Add a function to return the last inserted oid, for use in psql scripts
* Allow psql to print nulls as distinct from "" [null]
-* PQrequestCancel() be able to terminate backend waiting for lock
EXOTIC FEATURES
* Pull requested data directly from indexes, bypassing heap data
* Use index to restrict rows returned by multi-key index when used with
non-consecutive keys or OR clauses, so fewer heap accesses
-* Convert function(constant) into a constant for index use
+* -Convert function(constant) into a constant for index use
* Allow LIMIT ability on single-table queries that have no ORDER BY to use
a matching index [limit]
* Improve LIMIT processing by using index to limit rows processed [limit]
* Create more system table indexes for faster cache lookups
* fix indexscan() so it does leak memory by not requiring caller to free
* Improve _bt_binsrch() to handle equal keys better, remove _bt_firsteq()(Tom)
-* Allow SELECT * FROM tab WHERE int2col = 4 use int2col index, int8 too
- [optimizer]
-* Allow optimizer to prefer plans that match ORDER BY
+* Allow SELECT * FROM tab WHERE int2col = 4 use int2col index, int8,
+ float4, numeric/decimal too [optimizer]
+* -Allow optimizer to prefer plans that match ORDER BY
CACHE
MISC
* Allow compression of log and meta data
-* Update pg_statistic table to remove operator column
* Allow char() not to use variable-sized header to reduce disk size
* Do async I/O to do better read-ahead of data
* -Fix memory exhaustion when using many OR's [cnfify]
* Get faster regex() code from Henry Spencer <henry@zoo.utoronto.ca>
when it is available
* Use mmap() rather than SYSV shared memory(?)
-* Process const = const parts of OR clause in separate pass
+* -Process const = const parts of OR clause in separate pass
* Make oid use oidin/oidout not int4in/int4out in pg_type.h
* Improve Subplan list handling
* Allow Subplans to use efficient joins(hash, merge) with upper variable
* In WHERE tab1.x=3 AND tab1.x=tab2.y, add tab2.y=3
* pass atttypmod through parser in more cases [atttypmod]
* remove duplicate type in/out functions for disk and net
-* change VACUUM ANALYZE to use btree comparison functions, not <,=,> calls
* Allow persistent backends [persistent]
* Misc [performance]
* -Add needed includes and removed unneeded include files(Bruce)
* Make configure --enable-debug add -g on compile line
* Does Mariposa source contain any other bug fixes?
-* Remove SET KSQO option if OR processing is improved
+* Remove SET KSQO option if OR processing is improved(Tom)
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