From: Bruce Momjian Date: Mon, 16 Apr 2001 01:36:50 +0000 (+0000) Subject: Update TODO list. X-Git-Tag: REL9_0_0~20777 X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=c8e05affe41f08626422501510cdb4b3f08468c1;p=pg-rex%2Fsyncrep.git Update TODO list. --- diff --git a/doc/TODO b/doc/TODO index 15c33828b3..83e4615479 100644 --- a/doc/TODO +++ b/doc/TODO @@ -1,13 +1,13 @@ TODO list for PostgreSQL ======================== -Last updated: Sat Apr 14 21:55:58 EDT 2001 +Last updated: Sun Apr 15 21:32:39 EDT 2001 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 7.1 release. +A dash (-) marks changes that will appear in the upcoming 7.2 release. Bracketed items "[]" have more detailed information at http://www.postgresql.org/docs/todo.html. @@ -20,34 +20,13 @@ 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 * Unique index on base column not honored on inserts from inherited table INSERT INTO inherit_table (unique_index_col) VALUES (dup) should fail [inheritance] -* -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 (Tom) -* -SELECT col::DECIMAL(12,10); fails - -VIEWS - -* -Views containing aggregates sometimes fail (Jan) -* -Creating view and inheriting the view causes view* to show - duplicates [inheritance] -* -Disallow LOCK on view (Mark Hollomon) MISC * Plpgsql does not handle quoted mixed-case identifiers -* -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 - another backend. Might lead to MVCC inside of syscache * Permission to DELETE table allows UPDATE also * SELECT cash_out(1) causes crash @@ -56,9 +35,6 @@ ENHANCEMENTS URGENT -* -Add OUTER joins, left and right (Tom, Thomas) -* -Allow long tuples by chaining or auto-storing outside db (TOAST) (Jan) -* -Fix memory leak for expressions (Tom) * Add replication of distributed databases [replication] o automatic fallover o load balancing @@ -73,32 +49,19 @@ URGENT ADMIN * More access control over who can create tables and use locks (Karel) -* -Test syslog functionality * Allow elog() to return error codes, module name, file name, line number, not just messages [elog] * Allow international error message support and add error codes [elog] -* -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 (Peter E) * Remove unused files during database vacuum or postmaster startup 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 E) - 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 * Add conversion function from text to inet * Make a separate SERIAL type? * Store binary-compatible type information in the system -* -Add support for & operator (Peter E) * Allow LOCALE on a per-column basis, default to ASCII * Add SHOW command to see locale * Allow nulls in arrays @@ -110,15 +73,12 @@ TYPES * Declare typein/out functions in pg_proc with a special "C string" data type * Add non-large-object binary field * Functions returning sets do not totally work -* -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 * Add rtree index support for line, lseg, path, point * Make binary/file in/out interface for TOAST columns @@ -129,11 +89,7 @@ TYPES VIEWS -* -Allow DISTINCT on views -* -Allow views of aggregate columns -* -Allow views with subselects * 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 * Allow NOTIFY in rules involving conditionals * Evaluate INSERT rules at end of query, rather than beginning @@ -142,7 +98,6 @@ 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 * Add FILLFACTOR to index creation * Re-enable partial indexes * Allow inherited tables to inherit index, UNIQUE constraint, and primary key @@ -156,12 +111,9 @@ COMMANDS * ALTER TABLE ADD COLUMN to inherited table put column in wrong place [inheritance] -* -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 (Peter E) * Automatically drop constraints/functions when object is dropped * CLUSTER * cluster all tables at once @@ -175,14 +127,7 @@ COMMANDS * Allow INSERT/UPDATE of system-generated oid value for a row * Allow INSERT INTO my_table VALUES (a, b, c, DEFAULT, x, y, z, ...) * Allow INSERT INTO tab (col1, ..) VALUES (val1, ..), (val2, ..) -* -Allow multi-level query trees for INSERT INTO ... SELECT -* -Allow ORDER BY...LIMIT in INSERT INTO ... SELECT (Tom) -* -Allow ESCAPE '\' at the end of LIKE for ANSI compliance (Thomas) -* -Rewrite the LIKE handling by rewriting the user string with the - supplied ESCAPE * Allow RULE recompilation -* -Support UNION/INTERSECT/EXCEPT in sub-selects -* -Allow DELETE and UPDATE to use inheritance * Allow BINARY option to SELECT, like we do with DECLARE * MOVE 0 should not move to end of cursor * Overhaul ACL (access control) code @@ -191,7 +136,6 @@ COMMANDS columns, allow DEFAULT * Allow cursors to be DECLAREd/OPENed/CLOSEed outside transactions * Allow DELETE WHERE CURRENT OF cursor -* -redesign UNION structures to have separarate target lists * Add BETWEEN ASYMMETRIC/SYMMETRIC CLIENTS @@ -203,14 +147,11 @@ CLIENTS * Allow specification of column names * Allow dump/load of CSV format * fix array handling for ECPG -* -add pg_dump option to dump type names as standard ANSI types * have pg_dump use LEFT OUTER JOIN in multi-table SELECTs or multiple SELECTS to avoid bad system catalog entries -* -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 structure * add XML interface capability -* -Allow dumping of users/groups separately * Add a global RESET command for use with connection pooling * Remove <=6.3 version compatibility in ODBC? * Add SET REAL_FORMAT and SET DOUBLE_PRECISION_FORMAT using printf args @@ -221,8 +162,6 @@ REFERENTIAL INTEGRITY * 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 * Add deferred trigger queue file (Jan) * Allow oid to act as a foreign key * Implement dirty reads and use them in RI triggers @@ -252,18 +191,13 @@ MISCELLANEOUS * Increase identifier length(NAMEDATALEN) if small performance hit * Create a background process for each database that runs while database is idle, finding superceeded rows, gathering stats and vacuuming -* -Transaction log, so re-do log can be on a separate disk with after-row - images (Vadim) * Implement UNDO using transaction log * Populate backend status area and write program to dump status data * Put sort files in their own directory * Allow autocommit so always in a transaction block * Show location of syntax error in query [yacc] -* -Redesign the function call interface to handle NULLs better (Tom) * Overhaul bufmgr/lockmgr/transaction manager -* -Use IPC_EXCL when creating shared memory and semaphores (Tom) * Encrpyt passwords in pg_shadow table using MD5 (Vince) -* -Use flock() to prevent multiple postmasters on the same port (Tom) * Allow Java server-side programming [java] * Add sed-like regular expression search/replace capability @@ -272,8 +206,6 @@ PERFORMANCE -FSYNC -* -Allow transaction commits with rollback with no-fsync performance - (Vadim) * Delay fsync() when other backends are about to commit too [fsync] * Determine optimal commit_delay value * Determine optimal fdatasync/fsync, O_SYNC/O_DSYNC options @@ -286,8 +218,6 @@ INDEXES 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 (Tom) * Use indexes with CIDR '<<' (contains) operator * Allow LIKE indexing optimization for non-ASCII locales * Be smarter about insertion of already-ordered data into btree index @@ -305,7 +235,6 @@ VACUUM * Improve speed with indexes (perhaps recreate index instead) [vacuum] * Reduce lock time by moving tuples with read lock, then write lock and truncate table [vacuum] -* -Redesign ANALYZE in VACUUM so it can be run separately without locks * Make ANALYZE a separate command * Allow ANALYZE to ESTIMATE based on certain random precentage of rows * Add LAZY VACUUM (Vadim) @@ -317,14 +246,10 @@ MISCELLANEOUS * Get faster regex() code from Henry Spencer when it is available * Use mmap() rather than SYSV shared memory(?) [mmap] -* -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 -* -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 (Tom) -* -In WHERE tab1.x=3 AND tab1.x=tab2.y, add tab2.y=3 * allow configuration of maximum number of open files * Remove pg_listener index * Improve statistics storage in pg_class [performance] @@ -341,14 +266,9 @@ MISCELLANEOUS SOURCE CODE ----------- * Add use of 'const' for variables in source tree -* -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 (Bruce) * Convert remaining fprintf(stderr,...)/perror() to elog() -* -Allow libedit to be used in place of libreadline -* -BSD/OS does not support locale because there is no LC_MESSAGES (Bruce) * Remove unused pg_variable, pg_inheritproc, pg_ipl tables * Experiment with multi-threaded backend [thread] * Fix problems with libpq non-blocking/async code [async]