Update TODO list.
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Bruce Momjian
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doc/TODO
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doc/TODO
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TODO list for PostgreSQL
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========================
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Last updated: Sun Sep 26 20:37:50 EDT 1999
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Last updated: Sun Sep 26 23:23:58 EDT 1999
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Current maintainer: Bruce Momjian (maillist@candle.pha.pa.us)
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@ -9,6 +9,9 @@ the PostgreSQL web site, http://www.PostgreSQL.org.
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A dash(-) marks changes that will appear in the next release.
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Names in brackets "[]" indicate more detailed information is available in
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the directory pgsql/doc/TODO.detail/ under that name.
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RELIABILITY
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-----------
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@ -27,8 +30,7 @@ PARSER
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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
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(see TODO.detail/array)
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* -Array index references without table name cause problems [array]
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* Update table SET table.value = 3 fails
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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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@ -37,21 +39,19 @@ PARSER
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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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(see TODO.detail/inherit)
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[inherit]
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* CREATE TABLE x AS SELECT 1 UNION SELECT 2 fails
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* CREATE TABLE test(col char(2) DEFAULT user) fails in length restriction
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* mismatched types in CREATE TABLE ... DEFAULT causes problems
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(see TODO.detail/default)
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* mismatched types in CREATE TABLE ... DEFAULT causes problems [default]
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* SELECT ... UNION ... ORDER BY fails when sort expr not in result list
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* Be smarter about promoting types when UNION merges different data types
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* SELECT ... UNION ... GROUP BY fails if column types disagree
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* redesign INSERT ... SELECT to have two levels of target list
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* -select * from pg_class where oid in (0,-1)
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* have INTERSECT/EXCEPT prevent duplicates unless ALL is specified
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* prevent primary key of nine columns(see TODO.detail/primary)
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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
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(see TODO.detail/distinct)
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* SELECT DISTINCT ON col1 col1 col2 FROM tab1 is broken [distinct]
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VIEWS
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@ -70,11 +70,11 @@ ENHANCEMENTS
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URGENT
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* Add referential integrity(Jan?)(see TODO.detail/primary)
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* Add OUTER joins, left and right(see TODO.detail/outer)(Thomas, Bruce)
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* Add referential integrity(Jan?)[primary]
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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?(see TODO.detail/memory)(Tom?)
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* Fix memory leak for expressions?[memory](Tom?)
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* -Fix memory leak for aggregates?
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ADMIN
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@ -84,9 +84,8 @@ ADMIN
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* Add syslog functionality
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* Allow elog() to return error codes, not just messages
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* Allow international error message support and add error codes
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* Generate postmaster pid file and remove flock/fcntl lock code
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(see TODO.detail/flock)
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* Add ability to specifiy location of lock/socket files (see TODO.detail/flock)
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* Generate postmaster pid file and remove flock/fcntl lock code [flock]
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* Add ability to specifiy location of lock/socket files [flock]
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TYPES
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@ -115,7 +114,7 @@ TYPES
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* Add non-large-object binary field
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* Add index on NUMERIC/DECIMAL type
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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(see TODO.detail/function)
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* Functions returning sets don't really work right[function]
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VIEWS
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@ -136,19 +135,18 @@ INDEXES
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COMMANDS
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* ALTER TABLE ADD COLUMN to inherited table put column in wrong place
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(see TODO.detail/inherit)
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* ALTER TABLE ADD COLUMN to inherited table put column in wrong place [inherit]
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* Add ALTER TABLE DROP/ALTER COLUMN feature
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* Allow CLUSTER on all tables at once, and improve CLUSTER, loses NOT
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NULL specification on table(see TODO.detail/cluster)
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NULL specification on table [cluster]
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* Generate error on CREATE OPERATOR of ~~, ~ and and ~*
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* Add SIMILAR TO to allow character classes, 'pg_[a-c]%'
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* Auto-destroy sequence on DROP of table with SERIAL(Ryan)
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* Allow LOCK TABLE tab1, tab2, tab3 so all tables locked in unison
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* Allow INSERT/UPDATE of system-generated oid value for a row
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* Allow ESCAPE '\' at the end of LIKE for ANSI compliance(see TODO.detail/like)
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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(see TODO.detail/like)
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supplied ESCAPE [like]
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* Move LIKE index optimization handling to the optimizer
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* Allow RULE recompilation
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* Support UNION/INTERSECT/EXCEPT in sub-selects
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@ -161,7 +159,7 @@ CLIENTS
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* Update reltuples from COPY command
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* Allow psql \copy to allow delimiters
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* Add a function to return the last inserted oid, for use in psql scripts
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* Allow psql to print nulls as distinct from ""(see TODO.detail/null)
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* Allow psql to print nulls as distinct from "" [null]
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* PQrequestCancel() be able to terminate backend waiting for lock
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EXOTIC FEATURES
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@ -185,19 +183,16 @@ MISC
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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) (see TODO.detail/logging)
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with after-row images(Vadim) [logging]
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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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* Put sort files, large objects in their own directory
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* Do autocommit so always in a transaction block(?)
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* Show location of syntax error in query (see TODO.detail/yacc)
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* Redesign the function call interface to handle NULLs better
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(see TODO.detail/function)
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* Document/trigger/rule so changes to pg_shadow recreate pg_pwd
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(see TODO.detail/pg_shadow)
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* Missing optimizer selectivities for date, r-tree, etc.
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(see TODO.detail/optimizer)
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* Show location of syntax error in query [yacc]
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* Redesign the function call interface to handle NULLs better [function]
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* Document/trigger/rule so changes to pg_shadow recreate pg_pwd [pg_shadow]
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* Missing optimizer selectivities for date, r-tree, etc. [optimizer]
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* Overhaul mdmgr/smgr to fix double unlinking and double opens, cleanup
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* Overhaul bufmgr/lockmgr/transaction manager
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* Add PL/Perl(Mark Hollomon)
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@ -212,8 +207,7 @@ PERFORMANCE
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FSYNC
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* -Allow transaction commits with rollback with no-fsync performance
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(see TODO.detail/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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INDEXES
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@ -224,23 +218,21 @@ INDEXES
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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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* Allow LIMIT ability on single-table queries that have no ORDER BY to use
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a matching index(see TODO.detail/limit)
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* Improve LIMIT processing by using index to limit rows processed
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(see TODO.detail/limit)
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* Have optimizer take LIMIT into account when considering index scans
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(see TODO.detail/limit)
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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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* Have optimizer take LIMIT into account when considering index scans [limit]
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* Make index creation use psort code, because it is now faster(Vadim)
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* Allow creation of sort temp tables > 1 Gig
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* Create more system table indexes for faster cache lookups
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* fix indexscan() so it does leak memory by not requiring caller to free
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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
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(see TODO.detail/optimizer)
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* Allow SELECT * FROM tab WHERE int2col = 4 use int2col index, int8 too
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[optimizer]
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* Allow optimizer to prefer plans that match ORDER BY
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CACHE
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* Cache most recent query plan(s)(see TODO.detail/prepare)
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* Cache most recent query plan(s) [prepare]
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* Shared catalog cache, reduce lseek()'s by caching table size in shared area
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* elog() flushes cache, try invalidating just entries from current xact,
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perhaps using invalidation cache
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@ -252,7 +244,7 @@ MISC
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* Update pg_statistic table to remove operator column
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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(see TODO.detail/cnfify)
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* -Fix memory exhaustion when using many OR's [cnfify]
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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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@ -263,20 +255,19 @@ MISC
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* use fmgr_info()/fmgr_faddr() instead of fmgr() calls in high-traffic
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places, like GROUP BY, UNIQUE, index processing, etc.
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* improve dynamic memory allocation by introducing tuple-context memory
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allocation(see TODO.detail/memory)
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allocation [memory]
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* fix memory leak in cache code when non-existant table is referenced
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* In WHERE tab1.x=3 AND tab1.x=tab2.y, add tab2.y=3
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* pass atttypmod through parser in more cases(see TODO.detail/atttypmod)
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* pass atttypmod through parser in more cases [atttypmod]
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* remove duplicate type in/out functions for disk and net
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* change VACUUM ANALYZE to use btree comparison functions, not <,=,> calls
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* Allow persistent backends(see TODO.detail/persistent)
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* Misc(see TODO.detail/performance)
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* Allow persistent backends [persistent]
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* Misc [performance]
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SOURCE CODE
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-----------
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* Add use of 'const' for varibles in source tree
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* Fix C optimizer problem where fmgr_ptr calls return different types
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(see TODO.detail/alpha)
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* Fix C optimizer problem where fmgr_ptr calls return different types [alpha]
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* -Add needed includes and removed unneeded include files(Bruce)
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* Make configure --enable-debug add -g on compile line
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* Does Mariposa source contain any other bug fixes?
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