diff options
Diffstat (limited to 'doc/TODO')
| -rw-r--r-- | doc/TODO | 87 |
1 files changed, 1 insertions, 86 deletions
@@ -16,66 +16,32 @@ the directory pgsql/doc/TODO.detail/ under that name. RELIABILITY ----------- -RESOURCES - -* -Disallow inherited columns with the same name as new columns -* -Elog() does not free all its memory -* -spinlock stuck problem when elog(FATAL) and elog(ERROR) inside bufmgr -* -Recover or force failure when disk space is exhausted(Hiroshi) - PARSER -* -INSERT INTO ... SELECT with AS columns matching result columns problem * SELECT pg_class FROM pg_class generates strange error * Alter TABLE ADD COLUMN does not honor DEFAULT, add CONSTRAINT -* -Select a[1] FROM test fails, it needs test.a[1](Tom) -* -Array index references without table name cause problems [array](Tom) * 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(Tom) -* -CREATE TABLE test (a char(5) DEFAULT text '', b int4) fails on INSERT(Tom) -* -UNION with LIMIT fails * Unique index on base column not honored on inserts from inherited table INSERT INTO inherit_table (unique_index_col) VALUES (dup) should fail [inherit] -* -CREATE TABLE x AS SELECT 1 UNION SELECT 2 fails -* -CREATE TABLE test(col char(2) DEFAULT user) fails in length restriction -* -mismatched types in CREATE TABLE ... DEFAULT causes problems [default] -* -SELECT ... UNION ... ORDER BY fails when sort expr not in result - list, ORDER BY is applied only to the first SELECT - * Be smarter about promoting types when UNION merges different data types * redesign INSERT ... SELECT to have two levels of target list -* -select * from pg_class where oid in (0,-1) * have INTERSECT/EXCEPT prevent duplicates unless ALL is specified -* -prevent primary key that exceeds max index columns [primary] -* -SELECT COUNT('asdf') FROM pg_class WHERE oid=12 crashes * SELECT DISTINCT ON col1 col1 col2 FROM tab1 is broken [distinct] -* -require SELECT DISTINCT target list to have all ORDER BY columns -* -When using aggregates + GROUP BY, no rows in should yield no rows out(Tom) -* -Allow HAVING to use comparisons that have no aggregates(Tom) -* -Allow COUNT(DISTINCT col))(TOm) * SELECT 'x'::varchar(10) INTO newtable; fails * SELECT col::DECIMAL(12,10); fails VIEWS * Views containing aggregates sometimes fail(Jan) -* -Views with spaces in view name fail when referenced * Creating view and inheriting the view causes view* to show duplicates(inherit) * Disallow LOCK on view MISC -* -User who can create databases can modify pg_database table(Peter E) * Plpgsql does not handle quoted mixed-case identifiers -* -Fix btree to give a useful elog when key > 1/2 (page - overhead)(Tom) -* -pg_dump should preserve primary key information(Peter E) -* -plpgsql regression tests fails on BSD/OS -* -database names with spaces fail -* -insert of 0.0 into DECIMAL(4,4) field fails(Tom) -* -* Interlock to prevent DROP DATABASE on a database with running backendsInterlock to prevent DROP DATABASE on a database with running backends * 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) @@ -91,30 +57,24 @@ ENHANCEMENTS URGENT -* -Add referential integrity(Jan)[primary] * Add MATCH PARTIAL referential integrity * Foreign key does not check that columns referenced form a primary key or constrained by UNIQUE * Add OUTER joins, left and right[outer](Thomas, Bruce) * Allow long tuples by chaining or auto-storing outside db (TOAST)(Jan) -* -Eliminate limits on query length * Fix memory leak for expressions[memory](Tom?) -* -Fix memory leak for aggregates(Tom) ADMIN -* -Better interface for adding to pg_group(Peter E) * More access control over who can create tables and access the database * 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](Tatsuo) * Add ability to specifiy location of lock/socket files [flock] * Unify configuration into one configuration file TYPES -* -Add BIT, BIT VARYING * Nchar (as distinguished from ordinary varchar), * Domain capability * Add STDDEV/VARIANCE() function for standard deviation computation/variance @@ -124,23 +84,16 @@ TYPES 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 -* -Allow pg_descriptions when creating tables -* -Allow pg_descriptions when creating types, columns, and functions * Add IPv6 capability to INET/CIDR types * 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 LOCALE to use indexes in regular expression searches(Tom) -* -Allow array on int8[](Thomas) * Allow nulls in arrays * Allow arrays to be ORDER'ed * 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 -* -Add index on NUMERIC/DECIMAL type(Jan) -* -Make Absolutetime/Relativetime int4 because time_t can be int8 on some ports - (Peter E) * Functions returning sets don't really work right[function] * Make type equivalency apply to aggregates(Peter E.) @@ -154,17 +107,13 @@ INDEXES * Allow CREATE INDEX zman_index ON test (date_trunc( 'day', zman ) datetime_ops) fails index can't store constant parameters -* -Allow creation of functional indexes to use default types -* -Permissions on indexes, prevent them(Peter E) * Allow SQL function indexes * Add FILLFACTOR to index creation -* -Allow indexing of LIKE with localle character sets -* -Allow indexing of more than eight columns 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 DROP/ALTER COLUMN feature(Peter E) * Allow CLUSTER on all tables at once, and improve CLUSTER, loses NOT NULL specification, indexes, permissions, etc on table[cluster] * Add SIMILAR TO to allow character classes, 'pg_[a-c]%' @@ -174,7 +123,6 @@ COMMANDS * 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(Tom) * Allow RULE recompilation * Support UNION/INTERSECT/EXCEPT in sub-selects * Allow DELETE and UPDATE to use inheritance using tablename* @@ -184,12 +132,7 @@ CLIENTS * Make NULL's come out at the beginning or end depending on the ORDER BY direction -* -Allow flag to control COPY input/output of NULLs(Peter E) * Update reltuples from COPY command -* -Allow psql \copy to allow delimiters(Peter E) -* -Add a function to return the last inserted oid, for use in psql - scripts (Peter E) -* -Allow psql to print nulls as distinct from "" [null](Peter E) * fix array handling for ECPG * add pg_dump option to dump type names as standard ANSI types * allow psql \d to show primary and foreign keys @@ -212,26 +155,18 @@ MISC * Certain indexes will not shrink, i.e. oid indexes with many inserts(Vadim) * Restore unused oid's on backend exit if no one else has gotten oids * Have UPDATE/DELETE clean out indexes -* -Allow WHERE restriction on ctid(Hiroshi) * Allow cursors to be DECLAREd/OPENed/CLOSEed outside transactions * Allow DELETE WHERE CURRENT OF cursor -* -Allow PQrequestCancel() to terminate when in waiting-for-lock state * Transaction log, so re-do log can be on a separate disk by 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() -* -Allow subqueries in target list(Tom) * Put sort files, large objects 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) -* -Document/trigger/rule so changes to pg_shadow recreate pg_pwd - [pg_shadow](Peter E.) * Missing optimizer selectivities for date, r-tree, etc. [optimizer] -* -Overhaul mdmgr/smgr to fix double unlinking and double opens, cleanup * Overhaul bufmgr/lockmgr/transaction manager -* -Add PL/Perl(Mark Hollomon) -* -Add option for postgres user have a password by default(Peter E) * Add configure test to check for C++ need for *.h and namespaces * Allow BLCKSZ <= 64k, not <= 32k * redesign UNION structures to have separarate target lists @@ -243,34 +178,22 @@ PERFORMANCE FSYNC * Allow transaction commits with rollback with no-fsync performance [fsync](Vadim) -* -Prevent fsync in SELECT-only queries(Vadim) INDEXES * Use indexes in ORDER BY for min(), max() * 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(Bernard Frankpitt) * Improve LIMIT processing by using index to limit rows processed [limit] * Have optimizer take LIMIT into account when considering index scans [limit] -* -Make index creation use psort code, because it is now faster(Tom) -* -Allow creation of sort temp tables > 1 Gig -* -Create more system table indexes for faster cache lookups -* -fix indexscan() so it does leak memory by not requiring caller to -free(Tom) -* -Improve _bt_binsrch() to handle equal keys better, remove _bt_firsteq()(Tom) * 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(Tom) * Include heap CTID in btree index keys, remove equal-key cruft from btree CACHE * Cache most recent query plan(s) [prepare] * Shared catalog cache, reduce lseek()'s by caching table size in shared area -* -elog() flushes cache, try invalidating just entries from current xact, - perhaps using invalidation cache - MISC @@ -278,11 +201,9 @@ MISC * Allow char() not to use variable-sized header to reduce disk size * Allow char1 data type that takes one byte of storage * Do async I/O to do better read-ahead of data -* -Fix memory exhaustion when using many OR's [cnfify](Tom) * 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(Bernard Frankpitt) * 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 @@ -291,10 +212,7 @@ MISC places, like GROUP BY, UNIQUE, index processing, etc. * improve dynamic memory allocation by introducing tuple-context memory allocation [memory] -* -fix memory leak in cache code when non-existant table is referenced * 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 * Allow persistent backends [persistent] * others [performance] * prevent labels from being output for stored rules (Tom) @@ -304,11 +222,8 @@ SOURCE CODE ----------- * Add use of 'const' for variables in source tree * Fix C optimizer problem where fmgr_ptr calls return different types [alpha] -* -Add needed includes and removed unneeded include files(Bruce) -* -Make configure --enable-debug add -g on compile line(Peter E) * Does Mariposa source contain any other bug fixes? * Remove SET KSQO option if OR processing is improved(Tom) -* -Pre-generate lex and yacc output so not required for install(Peter E) * Use macros to define NT open() file parameters, remove NT-specific defines * Change CURRENT to OLD internally for rules |