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Diffstat (limited to 'doc/TODO')
| -rw-r--r-- | doc/TODO | 167 |
1 files changed, 107 insertions, 60 deletions
@@ -1,13 +1,13 @@ TODO list for PostgreSQL ======================== -Last updated: Thu May 25 12:08:57 EDT 2000 +Last updated: Thu Nov 2 16:16:45 EST 2000 Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us) The most recent version of this document can be viewed at the PostgreSQL web site, http://www.PostgreSQL.org. -A dash(-) marks changes that will appear in the upcoming 7.0 release. +A dash(-) marks changes that will appear in the upcoming 7.1 release. Names in brackets "[]" indicate more detailed information is available in the directory pgsql/doc/TODO.detail/ under that name. @@ -20,23 +20,22 @@ PARSER * SELECT pg_class FROM pg_class generates strange error * Alter TABLE ADD COLUMN does not honor DEFAULT, add CONSTRAINT -* Creating index of TIMESTAMP & RELTIME fails, or rename to DATETIME(Thomas) -* SELECT foo UNION SELECT foo is incorrectly simplified to SELECT foo +* -Creating index of TIMESTAMP & RELTIME fails, or rename to DATETIME(Thomas) +* -SELECT foo UNION SELECT foo is incorrectly simplified to SELECT foo * Unique index on base column not honored on inserts from inherited table INSERT INTO inherit_table (unique_index_col) VALUES (dup) should fail [inherit] -* Be smarter about promoting types when UNION merges different data types -* redesign INSERT ... SELECT to have two levels of target list +* -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 DISTINCT ON col1 col1 col2 FROM tab1 is broken [distinct] * SELECT col::DECIMAL(12,10); fails VIEWS -* Views containing aggregates sometimes fail(Jan) +* -Views containing aggregates sometimes fail(Jan) * Creating view and inheriting the view causes view* to show duplicates(inherit) -* Disallow LOCK on view +* -Disallow LOCK on view(Mark Hollomon) MISC @@ -44,100 +43,132 @@ MISC * Buffer reference counting bugfixes * 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 +* -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 another backend. Might lead to MVCC inside of syscache -* Permission to UPDATE table allows DELETE also -* Some database schema's are not dumpable; do dumps in oid order +* Permission to DELETE table allows UPDATE also ENHANCEMENTS ------------ URGENT -* Add OUTER joins, left and right[outer](Thomas, Bruce) -* Allow long tuples by chaining or auto-storing outside db (TOAST)(Jan) +* -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?) ADMIN -* More access control over who can create tables and access the database -* Test syslog functionality +* More access control over who can create tables and use locks(Karel) +* -Test syslog functionality +* Convert remaining fprintf(stderr,...) to elog() * Allow elog() to return error codes, not just messages * Allow international error message support and add error codes -* Add ability to specifiy location of lock/socket files [flock] -* Unify configuration into one configuration file (Peter E) -* use setproctitle() if it exists for 'ps' display of status +* -Unify configuration into one configuration file (Peter E) +* -use setproctitle() if it exists for 'ps' display of status +* Prevent initdb from running wrong version of postmaster/postgres TYPES * Nchar (as distinguished from ordinary varchar), * Domain capability -* Add STDDEV/VARIANCE() function for standard deviation computation/variance -* Allow compression of large fields or a compressed field type -* Large objects - o Fix large object mapping scheme, own typeid or reltype(Peter) - o Not to stuff everything as files in a single directory, hash dirs - o Allow large object vacuuming - o Tables that start with xinv confused to be large objects +* -Add STDDEV/VARIANCE() function for standard deviation computation/variance +* -Allow compression of large fields or a compressed field type +* -Large objects + o -Fix large object mapping scheme, own typeid or reltype(Peter) + o -Not to stuff everything as files in a single directory, hash dirs + o -Allow large object vacuuming + o -Tables that start with xinv confused to be large objects * Add IPv6 capability to INET/CIDR types +* Fix improper masking of some inet/cidr types [cidr] * Make a separate SERIAL type? * Store binary-compatible type information in the system * Add support for & operator * Allow LOCALE on a per-column basis, default to ASCII * Allow nulls in arrays * Allow arrays to be ORDER'ed +* Support construction of array result values in expressions +* Change foreign key constraint for array -> element to mean element + in array * Remove Money type, add money formatting for decimal type * Declare typein/out functions in pg_proc with a special "C string" data type * Add non-large-object binary field * Functions returning sets don't really work right[function] -* Add hash for int8 +* -Add hash for int8 (Tom) * SELECT col FROM tab WHERE numeric_col = 10.1 fails +* Get BIT type working +* Allow better handling of numeric constants, type conversion [typeconv] +* Support multiple simultaneous character sets, per SQL92 +* Reject character sequences those are not valid in their charset +* 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 rtree index support for line, lseg, path, point VIEWS -* Allow DISTINCT on views -* Allow views of aggregate columns -* Allow views with subselects +* -Allow DISTINCT on views +* -Allow views of aggregate columns +* -Allow views with subselects +* Create insert, update and delete rules for simple one table views +* -Change elog for complex view ins|upd|del to "cannot {ins|upd|del} +* Add the functionality for "with check option" clause of create view INDEXES * Allow CREATE INDEX zman_index ON test (date_trunc( 'day', zman ) datetime_ops) fails index can't store constant parameters -* Allow SQL function indexes +* -Allow SQL function indexes * Add FILLFACTOR to index creation +* Re-enable partial indexes +* Allow inherited tables to inherit index COMMANDS * ALTER TABLE ADD COLUMN to inherited table put column in wrong place [inherit] -* Add ALTER TABLE DROP/ALTER COLUMN feature(Peter E) -* Add ALTER TABLE command to change table ownership +* -Add ALTER TABLE ALTER COLUMN feature(Peter E) +* Add ALTER TABLE DROP COLUMN feature [drop] +* Add ALTER TABLE command to change table ownership (Mark H) +* Add ALTER FUNCTION +* Add ALTER TABLE ... DROP CONSTRAINT +* Add ALTER USER command to change user db attributes +* Automatically drop constraints/functions when object is dropped * Allow CLUSTER on all tables at once, and improve CLUSTER, loses NOT NULL specification, indexes, permissions, etc on table * 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 LOCK TABLE tab1, tab2, tab3 so all tables locked in unison [lock] * Allow INSERT/UPDATE of system-generated oid value for a row -* Allow ESCAPE '\' at the end of LIKE for ANSI compliance [like] +* -Allow ESCAPE '\' at the end of LIKE for ANSI compliance (Thomas) * Rewrite the LIKE handling by rewriting the user string with the supplied ESCAPE [like] * Allow RULE recompilation -* Support UNION/INTERSECT/EXCEPT in sub-selects -* Allow DELETE and UPDATE to use inheritance using tablename* +* -Support UNION/INTERSECT/EXCEPT in sub-selects +* -Allow DELETE and UPDATE to use inheritance * Allow INSERT INTO my_table VALUES (a, b, c, DEFAULT, x, y, z, ...) * 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 +* Add SHOW command to display locks +* Allow INSERT INTO tab (col1, ..) VALUES (val1, ..), (val2, ..) + CLIENTS * Make NULL's come out at the beginning or end depending on the ORDER BY direction * Update reltuples from COPY command +* Allow COPY to specify column names * fix array handling for ECPG * add pg_dump option to dump type names as standard ANSI types +* -make pg_dump dump in oid order, so dependencies are resolved (Philip) * allow psql \d to show primary and foreign keys * allow psql \d to show temporary table schema +* add XML interface capability +* -Allow dumping of users/groups separately REFERENTIAL INTEGRITY @@ -149,14 +180,19 @@ REFERENTIAL INTEGRITY * 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 +* Add deferred trigger queue file (Jan) +* Allow oid to act as a foreign key EXOTIC FEATURES * Add sql3 recursive unions -* Add the concept of dataspaces -* Add replication of distributed databases +* Add the concept of dataspaces/tablespaces [tablespaces] +* Add replication of distributed databases [replication] * Allow queries across multiple databases * Allow nested transactions (Vadim) +* Allow INSERT/UPDATE to return new.col or old.col (Philip) +* SQL*Net listener that makes PostgreSQL appear as an Oracle database + to clients MISC @@ -174,38 +210,42 @@ MISC with after-row images(Vadim) [logging](Vadim)(in-progress) * Populate backend status area and write program to dump status data * Make oid use unsigned int more reliably, pg_atoi() -* Put sort files, large objects in their own directory +* Put sort files in their own directory * Do autocommit so always in a transaction block(?) * Show location of syntax error in query [yacc] -* Redesign the function call interface to handle NULLs better[function](Tom) +* -Redesign the function call interface to handle NULLs better[function](Tom) * Missing optimizer selectivities for date, r-tree, etc. [optimizer] * Overhaul bufmgr/lockmgr/transaction manager * Allow BLCKSZ <= 64k, not <= 32k -* redesign UNION structures to have separarate target lists -* Allow multi-level query trees for INSERT INTO ... SELECT +* -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 * have pg_upgrade use pg_ctl to stop/start postmaster * Encrpyt passwords in pg_shadow table using MD5 +* Use flock() to prevent multiple postmasters on the same port [flock] PERFORMANCE ----------- -FSYNC +-FSYNC -* Allow transaction commits with rollback with no-fsync performance [fsync](Vadim) +* -Allow transaction commits with rollback with no-fsync performance + (Vadim) INDEXES -* Use indexes in ORDER BY for min(), max() +* Use indexes to find min() and max() * Use index to restrict rows returned by multi-key index when used with 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 +* Use indexes with CIDR '<<' (contains) operator +* Fix LIKE indexing optimization for non-ASCII locales CACHE -* Cache most recent query plan(s) [prepare] +* Cache most recent query plan(s) (Karel) [prepare] * Shared catalog cache, reduce lseek()'s by caching table size in shared area MISC @@ -220,27 +260,35 @@ MISC * 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 +* -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] -* In WHERE tab1.x=3 AND tab1.x=tab2.y, add tab2.y=3 +* -In WHERE tab1.x=3 AND tab1.x=tab2.y, add tab2.y=3 * Allow persistent backends [persistent] * prevent labels from being output for stored rules (Tom) * allow configuration of maximum number of open files * Remove pg_listener index -* Remove ANALYZE from VACUUM so it can be run separately without locks -* Gather more accurate statistics using indexes +* -Redesign ANALYZE in VACUUM so it can be run separately without locks +* Make ANALYZE a separate command +* Gather more accurate dispersion statistics using indexes +* Keep statistics about clustering of table rows [optimizer] +* Improve statistics storage in pg_class [performance] +* Improve VACUUM speed with indexes [vacuum] +* Reduce VACUUM lock time by moving tuples with read lock, then write + lock and truncate table [vacuum] +* -BSD/OS does not support locale because there is no LC_MESSAGES (Bruce) +* Add connection pooling [pool] SOURCE CODE ----------- * Add use of 'const' for variables in source tree -* Fix C optimizer problem where fmgr_ptr calls return different types [alpha] +* -Fix C optimizer problem where fmgr_ptr calls return different types (Tom) * Does Mariposa source contain any other bug fixes? * Remove SET KSQO option now that OR processing is improved(Tom) -* Use macros to define NT open() file parameters, remove NT-specific defines -* Change CURRENT to OLD internally for rules -* rename pl/tcl to pl/pltcl +* -Use macros to define NT open() file parameters, remove NT-specific defines +* -Change CURRENT to OLD internally for rules (Bruce) +* replace the use of fprint(stderr, ...) with elog() in backend code --------------------------------------------------------------------------- @@ -262,6 +310,7 @@ Developers who have claimed items are: * Michael is Michael Meskes <meskes@postgresql.org> * Oleg is Oleg Bartunov <oleg@sai.msu.su> * Peter is Peter T Mount <peter@retep.org.uk> + * Philip Warner <pjw@rhyme.com.au> * Peter E is Peter Eisentraut<peter_e@gmx.net> * Ryan is Ryan Bradetich <rbrad@hpb50023.boi.hp.com> * Stefan Simkovics <ssimkovi@rainbow.studorg.tuwien.ac.at> @@ -269,6 +318,4 @@ Developers who have claimed items are: * Tom is Tom Lane <tgl@sss.pgh.pa.us> * Thomas is Thomas Lockhart <lockhart@alumni.caltech.edu> * TomH is Tom I Helbekkmo <tih@Hamartun.Priv.NO> - * Vadim is "Vadim B. Mikheev" <vadim@krs.ru> - - + * Vadim is "Vadim B. Mikheev" <vadim4o@email.com> |