TODO list for PostgreSQL
========================
-Last updated: Thu Jan 4 03:15:12 EST 2001
+Last updated: Thu Jan 4 03:24:53 EST 2001
Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
[inherit]
* -Be smarter about promoting types when UNION merges different data types
* -redesign INSERT ... SELECT to have two levels of target list
-* have INTERSECT/EXCEPT prevent duplicates unless ALL is specified
-* SELECT col::DECIMAL(12,10); fails
+* -have INTERSECT/EXCEPT prevent duplicates unless ALL is specified (Tom)
+* -SELECT col::DECIMAL(12,10); fails
VIEWS
* -Views containing aggregates sometimes fail (Jan)
-* Creating view and inheriting the view causes view* to show
+* -Creating view and inheriting the view causes view* to show
duplicates (inherit)
* -Disallow LOCK on view (Mark Hollomon)
MISC
* Plpgsql does not handle quoted mixed-case identifiers
-* Buffer reference counting bugfixes
-* Fix libpq bug that causes it to drop backend error message sent
+* -Buffer reference counting bugfixes (Tom)
+* -Fix libpq bug that causes it to drop backend error message sent
just before connection closure (ie, any FATAL error message)
* -SELECT ... UNION ... ORDER BY fails when sort expr not in result list
* -SELECT ... UNION ... GROUP BY fails if column types disagree, no type
promotion occurs
-* Modification of pg_class can happen while table in use by
+* -Modification of pg_class can happen while table in use by
another backend. Might lead to MVCC inside of syscache
* Permission to DELETE table allows UPDATE also
* -Add OUTER joins, left and right[outer] (Tom, Thomas)
* -Allow long tuples by chaining or auto-storing outside db (TOAST) (Jan)
-* Fix memory leak for expressions[memory] (Tom?)
+* -Fix memory leak for expressions[memory] (Tom)
* Add replication of distributed databases [replication]
o automatic fallover
o load balancing
* Make functions more multi-byte aware, i.e. trim()
* Make n of CHAR(n)/VARCHAR(n) the number of letters, not bytes
* -Update macaddr manufacturer numbers, or remove the function macaddr_manuf()
-* Add btree index support for reltime, tinterval, regproc, bit, varbit
+* Add btree index support for reltime, tinterval, regproc
* Add rtree index support for line, lseg, path, point
* Make binary/file in/out interface for TOAST columns
* SELECT cash_out(2) crashes because of opaque
* -Allow DISTINCT on views
* -Allow views of aggregate columns
* -Allow views with subselects
-* Create insert, update and delete rules for simple one table views
+* Automatically create rules on views so they are updateable, per SQL92
* -Change elog for complex view ins|upd|del to "cannot {ins|upd|del}
* Add the functionality for "with check option" clause of create view
-* Automatically create rules on views so they are updateable, per SQL92
INDEXES
* Allow BINARY option to SELECT, like we do with DECLARE
* MOVE 0 should not move to end of cursor
* Overhaul ACL (access control) code
-* Allow ORDER BY...LIMIT in INSERT INTO ... SELECT
+* -Allow ORDER BY...LIMIT in INSERT INTO ... SELECT (Tom)
* Add SHOW command to display locks
CLIENTS
* Check that primary key exists at foreign key definition time
* Prevent column dropping if column is used by foreign key
* Propagate column or table renaming to foreign key constraints
-* Emit a warning at foreign key creation time if no UNIQUE index
- exists on referenced primary key attributes
+* -Emit a warning at foreign key creation time if no UNIQUE index
+ exists on referenced primary key attributes (Tom)
* Add deferred trigger queue file (Jan)
* Allow oid to act as a foreign key
* Implement dirty reads and use them in RI triggers
* Overhaul bufmgr/lockmgr/transaction manager
* -redesign UNION structures to have separarate target lists
* -Allow multi-level query trees for INSERT INTO ... SELECT
-* Use IPC_EXCL when creating shared memory and semaphores
+* -Use IPC_EXCL when creating shared memory and semaphores (Tom)
* have pg_upgrade use pg_ctl to stop/start postmaster
* Encrpyt passwords in pg_shadow table using MD5 (Vince)
-* Use flock() to prevent multiple postmasters on the same port [flock]
+* -Use flock() to prevent multiple postmasters on the same port (Tom)
* Allow Java server-side programming
PERFORMANCE
non-consecutive keys or OR clauses, so fewer heap accesses
* Allow SELECT * FROM tab WHERE int2col = 4 use int2col index, int8,
float4, numeric/decimal too [optimizer]
-* Include heap CTID in btree index keys, remove equal-key cruft from btree
+* -Include heap CTID in btree index keys, remove equal-key cruft from
+ btree (Tom)
* Use indexes with CIDR '<<' (contains) operator
-* Fix LIKE indexing optimization for non-ASCII locales
+* Allow LIKE indexing optimization for non-ASCII locales
CACHE
MISC
* Allow compression of log and meta data
-* Allow char() not to use variable-sized header to reduce disk size
* Do async I/O to do better read-ahead of data
* Get faster regex() code from Henry Spencer <henry@zoo.utoronto.ca>
when it is available
* Use mmap() rather than SYSV shared memory(?)
-* Make oid use oidin/oidout not int4in/int4out in pg_type.h
+* -Make oid use oidin/oidout not int4in/int4out in pg_type.h (Tom)
* Improve Subplan list handling
* Allow Subplans to use efficient joins(hash, merge) with upper variable
[subquery]
* -use fmgr_info()/fmgr_faddr() instead of fmgr() calls in high-traffic
places, like GROUP BY, UNIQUE, index processing, etc.
* improve dynamic memory allocation by introducing tuple-context memory
- allocation [memory]
+ allocation (Tom)
* -In WHERE tab1.x=3 AND tab1.x=tab2.y, add tab2.y=3
-* prevent labels from being output for stored rules (Tom)
* allow configuration of maximum number of open files
* Remove pg_listener index
* -Redesign ANALYZE in VACUUM so it can be run separately without locks
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