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@ -1,14 +1,14 @@ |
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==================================================== |
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TODO list (FAQ) for PostgreSQL |
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==================================================== |
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last updated: Sat Sep 13 22:00:05 EDT 1997 |
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last updated: Mon Sep 29 22:45:43 EDT 1997 |
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current maintainer: Bruce Momjian (maillist@candle.pha.pa.us) |
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The most recent version of this document can be viewed at |
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the postgreSQL WWW site, http://www.postgreSQL.org. |
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THE CHANGES FOR 6.1 and 6.1.1 APPEAR AT THE END OF THIS DOCUMENT |
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THE CHANGES FOR 6.2 APPEAR AT THE END OF THIS DOCUMENT |
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Developers who have claimed items are: |
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Bruce is Bruce Momjian<maillist@candle.pha.pa.us> |
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@ -46,32 +46,34 @@ Fix all NULL features |
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Fix compile and security of Kerberos/GSSAPI code (Daniel Kalchev?) |
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COUNT on VIEW always returns zero (maybe because there is no oid for views?) |
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CREATE VIEW requires super-user priviledge |
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SELECT a[1] FROM test fails, it needs test.a[1] |
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INSERT INTO ... SELECT DISTINCT ... generates error on DISTINCT |
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can lo_export()/lo_import() read/write anywhere, causing a security problem? |
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Fix UPDATE key_table SET keyval=max(reftab.NUM)+1 WHERE tblname='reftab' |
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SELECT COUNT(*) FROM TAB1, TAB2 fails |
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Tables that start with xinv confused to be large objects |
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Two and three dimmensional arrays display improperly, missing {} |
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Add GROUP BY and HAVING to INSERT INTO table SELECT * FROM table2 |
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Make timestamp type recognize DateStyle(Tom) |
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SELECT SUM(2+2) FROM table dumps core |
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lo_unlink() crashes server |
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UPDATE table SET table.value = 3 fails |
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Allow variable casts with BETWEEN 'today'::asbtime AND 'today'::abstime |
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Prevent auto-table reference, like SELECT table.col WHERE col = 3 (?) |
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Remove un-needed malloc() calls and replace with palloc(). |
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SELECT * FROM table WHERE int4_column = '1' fails |
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Allow INSERT INTO table SELECT id, count(*) FROM table2 GROUP BY id |
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SELECT a[1] FROM test fails, it needs test.a[1] |
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SELECT COUNT(*) FROM TAB1, TAB2 fails |
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SELECT SUM(2+2) FROM table dumps core |
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UPDATE table SET table.value = 3 fails |
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UPDATE key_table SET keyval=max(reftab.NUM)+1 WHERE tblname='reftab' fails |
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INSERT INTO ... SELECT DISTINCT ... generates error on DISTINCT |
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INSERT INTO table SELECT id, count(*) FROM table2 GROUP BY id generate error |
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ENHANCEMENTS |
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------------ |
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Replace table-level locking with row or page-level locking(Vadim) |
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PRIMARY KEY during table creation |
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Add SERIAL type |
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Preserve GRANT/REVOKE/pg_group in pg_dump |
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Transaction log |
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Add full ANSI SQL capabilities (Stefan) |
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add subselects, possibility using temporary SQL functions |
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Implement HAVING clause |
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Implement EXISTS qualifier |
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column constraints (using rules), PRIMARY KEY during table creation |
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add DEFAULT, RESTRAINT, and CHECK capabilities |
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report "Not implemented" if valid syntax is supplied |
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add OUTER joins, left and right (Thomas) |
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make VIEWs updateable where possible |
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@ -89,7 +91,6 @@ Fix the rules system(Jan?,Soo-Ho) |
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add CONSTRAINT |
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Full set of text operations and functions |
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word searches, concat,max() on text, char |
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Replace table-level locking with row or page-level locking(Vadim) |
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Large objects |
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overwriting blocks has problems |
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there are other problems, too. |
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@ -112,7 +113,7 @@ allow row re-use without vacuum, maybe?(Vadim) |
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can't vacuum large objects |
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can't reduce index file size with vacuum |
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Remove restriction that ORDER BY field must be in SELECT list(?) |
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Allow queries about owner of datbases, tables like: |
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Allow queries about owner of tables, like: |
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SELECT u.usesysid FROM postgres.pg_user u; |
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Add word index for text fields, maybe with trigrams, i.e.: |
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' (cat | dog) & ! fox ' meaning text has cat or dog, but not fox |
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@ -133,19 +134,19 @@ certain indexes will not shrink, i.e. oid indexes with many inserts |
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make NULL's come out at the beginning or end depending on the ORDER BY direction |
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change the library/backend interface to use network byte order |
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allow unix domain sockets for local connections for performance and security |
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Make operators for float8/int4 arithmetic |
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Add PAGER for psql's \dt and \d tablename |
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PERFORMANCE |
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----------- |
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Use indexes in ORDER BY |
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Allow LIKE/wildcard matches to use indexes if the wildcard character is not first |
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Optimizing disjunctive queries |
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Fix bushy-plans (Martin) |
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Other optimizer bugs |
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Is fsync use optimized? |
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Use indexes in ORDER BY |
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Profile engine in INSERT's and other operations |
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Cache most recent query plan(s?) |
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Shared catalog cache, reduce lseek()'s by caching table size in shared area |
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Allow compression of log and meta data |
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Allow LIKE/wildcard matches to use indexes if the wildcard character is not first |
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Add FILLFACTOR to index creation |
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Allow indexes to be used with OR clauses(Vadim) |
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update pg_statistic table to remove operator column |
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@ -156,7 +157,6 @@ Update usermanual source(many) |
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remove time-travel in documentation(Bruce) |
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added features used in grammer but not in docs, like :: and CAST |
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update libpq++ manual page |
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Add pg_password manual page |
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PORTABILITY |
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----------- |
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@ -164,127 +164,99 @@ PORTABILITY |
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--------------------------------------------------------------------------- |
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CHANGES IN THE 6.1.1 RELEASE |
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Changes in this release |
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----------------------- |
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fix for SET with options (Thomas) |
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allow pg_dump/pg_dumpall to preserve ownership of all tables/objects(Bruce) |
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new psql \connect option allows changing usernames without chaning databases |
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fix for initdb --debug option(Yoshihiko Ichikawa) |
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lextest cleanup(Bruce) |
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hash fixes(Vadim) |
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fix date/time month boundary arithmetic(Thomas) |
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fix timezone daylight handling for some ports(Thomas, Bruce, Tatsuo) |
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timestamp overhauled to use standard functions(Thomas) |
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other code cleanup in date/time routines(Thomas) |
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psql's \d now case-insensitive(Bruce) |
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psql's backslash commands can now have trailing semicolon(Bruce) |
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fix memory leak in psql when using \g(Bruce) |
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major fix for endian handling of communication to server(Thomas, Tatsuo) |
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Fix for Solaris assembler and include files(Yoshihiko Ichikawa) |
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allow underscores in usernames(Bruce) |
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pg_dumpall now returns proper status, portability fix(Bruce) |
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--------------------------------------------------------------------------- |
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CHANGES IN THE 6.1 RELEASE |
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CHANGES IN THE 6.2 RELEASE |
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Bug Fixes |
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--------- |
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packet length checking in library routines |
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lock manager priority patch |
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check for under/over flow of float8(Bruce) |
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multi-table join fix(Vadim) |
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SIGPIPE crash fix(Darren) |
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large object fixes(Sven) |
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allow btree indexes to handle NULLs(Vadim) |
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timezone fixes(D'Arcy) |
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select SUM(x) can return NULL on no rows(Thomas) |
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internal optimizer, executor bug fixes(Vadim) |
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fix problem where inner loop in < or <= has no rows(Vadim) |
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prevent re-commuting join index clauses(Vadim) |
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fix join clauses for multiple tables(Vadim) |
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fix hash, hashjoin for arrays(Vadim) |
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fix btree for abstime type(Vadim) |
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large object fixes(Raymond) |
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fix buffer leak in hash indices (Vadim) |
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fix rtree for use in inner scan (Vadim) |
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fix gist for use in inner scan, cleanups (Vadim, Andrea) |
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avoid unnecessary local buffers allocation (Vadim, Massimo) |
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fix local buffers leak in transaction aborts (Vadim) |
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fix file manager memmory leaks, cleanups (Vadim, Massimo) |
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fix storage manager memmory leaks (Vadim) |
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fix btree duplicates handling (Vadim) |
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fix deleted tuples re-incarnation caused by vacuum (Vadim) |
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fix SELECT varchar()/char() INTO TABLE made zero-length fields(Bruce) |
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many psql, pg_dump, and libpq memory leaks fixed using Purify (Igor) |
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SELECT on two tables where zero or one table in WHERE and target |
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clause returns no rows(Vadim) |
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Fix problems with pg_dump for inheritance, sequences, archive tables(Bruce) |
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Fix compile errors on overflow due to shifts, unsigned, and bad prototypes |
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from Solaris(Diab Jerius) |
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Fix bugs in geometric line arithmetic (bad intersection calculations)(Thomas) |
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Check for geometric intersections at endpoints to avoid rounding ugliness(Thomas) |
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Catch non-functional delete attempts(Vadim) |
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Change time function names to be more consistent(Michael Reifenberg) |
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Check for zero divides(Michael Reifenberg) |
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Fix very old bug which made tuples changed/inserted by a commnd |
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visible to the command itself (so we had multiple update of |
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updated tuples, etc)(Vadim) |
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Fix for SELECT null, 'fail' FROM pg_am (Patrick) |
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SELECT NULL as EMPTY_FIELD now allowed(Patrick) |
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Remove un-needed signal stuff from contrib/pginterface |
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Enhancements |
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------------ |
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attribute optimization statistics(Bruce) |
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much faster new btree bulk load code(Paul) |
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BTREE UNIQUE added to bulk load code(Vadim) |
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new lock debug code(Massimo) |
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massive changes to libpg++(Leo) |
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new GEQO optimizer speeds table multi-table optimization(Martin) |
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new WARN message for non-unique insert into unique key(Marc) |
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update x=-3, no spaces, now valid(Bruce) |
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remove case-sensitive identifier handling(Bruce,Thomas,Dan) |
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debug backend now pretty-prints tree(Darren) |
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new Oracle character functions(Edmund) |
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new plaintext password functions(Dan) |
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no such class or insufficient privilege changed to distinct messages(Dan) |
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new ANSI timestamp function(Dan) |
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new ANSI Time and Date types (Thomas) |
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move large chunks of data in backend(Martin) |
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multi-column btree indexes(Vadim) |
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new SET var TO value command(Martin) |
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update transaction status on reads(Dan) |
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new locale settings for character types(Oleg) |
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new SEQUENCE serial number generator(Vadim) |
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GROUP BY function now possible(Vadim) |
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re-organize regression test(Thomas,Marc) |
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new optimizer operation weights(Vadim) |
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new psql \z grant/permit option(Marc) |
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new MONEY data type(D'Arcy,Thomas) |
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tcp socket communication speed improved(Vadim) |
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new VACUUM option for attribute statistics, and for certain columns (Vadim) |
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many geometric type improvements(Thomas,Keith) |
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additional regression tests(Thomas) |
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new datestyle variable(Thomas,Vadim,Martin) |
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more comparison operators for sorting types(Thomas) |
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new conversion functions(Thomas) |
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new more compact btree format(Vadim) |
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allow pg_dumpall to preserve database ownership(Bruce) |
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new SET GEQO=# and R_PLANS variable(Vadim) |
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old (!GEQO) optimizer can use right-sided plans (Vadim) |
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typechecking improvement in SQL parser(Bruce) |
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new SET, SHOW, RESET commands(Thomas,Vadim) |
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new \connect database USER option |
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new destroydb -i option (Igor) |
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new \dt and \di psql commands (Darren) |
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SELECT "\n" now escapes newline (A. Duursma) |
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new geometry conversion functions from old format (Thomas) |
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Improve optimizer plan choice(Vadim) |
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Default genetic optimizer GEQO parameter is now 8(Bruce) |
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Allow use parameters in target list having aggregates in functions(Vadim) |
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Added JDBC driver as an interface(Adrian & Peter) |
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pg_password utility |
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Return number of tuples inserted/affected by INSERT/UPDATE/DELETE etc.(Vadim) |
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Triggers implemented with CREATE TRIGGER (SQL3)(Vadim) |
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SPI (Server Programming Interface) implemented to support triggers(Vadim) |
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NOT NULL implemented (SQL92)(Robson Paniago de Miranda) |
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Include reserved words for string handling, outer joins, and unions(Thomas) |
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Implement extended comments ("/* ... */") using exclusive states(Thomas) |
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Add "//" single-line comments(Bruce) |
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Remove some restrictions on characters in operator names(Thomas) |
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DEFAULT and CONSTRAINT for tables implemented (SQL92)(Vadim & Thomas) |
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Add text concatenation operator and function (SQL92)(Thomas) |
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Support WITH TIME ZONE syntax (SQL92)(Thomas) |
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Support INTERVAL <unit> TO <unit> syntax (SQL92)(Thomas) |
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Define types DOUBLE PRECISION, INTERVAL, CHARACTER, |
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and CHARACTER VARYING (SQL92)(Thomas) |
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Define type FLOAT(p) and rudimentary DECIMAL(p,s), NUMERIC(p,s) (SQL92)(Thomas) |
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Define EXTRACT(), POSITION(), SUBSTRING(), and TRIM() (SQL92)(Thomas) |
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Define CURRENT_DATE, CURRENT_TIME, CURRENT_TIMESTAMP (SQL92)(Thomas) |
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Add syntax and warnings for UNION, HAVING, INNER and OUTER JOIN (SQL92)(Thomas) |
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Add more reserved words, mostly for SQL92 compliance(Thomas) |
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Allow hh:mm:ss time entry for timespan/reltime types(Thomas) |
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Add center() routines for lseg, path, polygon(Thomas) |
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Add distance() routines for circle-polygon, polygon-polygon(Thomas) |
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Check explicitly for points and polygons contained within polygons |
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using an axis-crossing algorithm(Thomas) |
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Add routine to convert circle-box(Thomas) |
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Merge conflicting operators for different geometric data types(Thomas) |
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Replace distance operator "<===>" with "<->"(Thomas) |
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Replace "above" operator "!^" with ">^" and "below" operator "!|" with "<^"(Thomas) |
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Add routines for text trimming on both ends, substring, and string position(Thomas) |
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Added conversion routines circle(box) and poly(circle)(Thomas) |
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Allow internal sorts to be stored in memory rather than in files(Bruce & Vadim) |
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Allow functions and operators on internally-identical types to succeed(Bruce) |
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Speed up backend startup after profiling analysis(Bruce) |
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Inline frequently called functions for performance(Bruce) |
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Reduce open() calls(Bruce) |
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psql: Add PAGER for \h and \?,\C fix |
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Fix for psql pager when no tty(Bruce) |
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New entab utility(Bruce) |
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Source tree changes |
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Source Tree Changes |
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------------------- |
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new configuration script(Marc) |
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readline configuration option added(Marc) |
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OS-specific configuration options removed(Marc) |
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new OS-specific template files(Marc) |
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no more need to edit Makefile.global(Marc) |
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re-arrange include files(Marc) |
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nextstep patches (Gregor Hoffleit) |
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removed WIN32-specific code(Bruce) |
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removed postmaster -e option, now only postgres -e option (Bruce) |
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merge duplicate library code in front/backends(Martin) |
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now works with eBones, international Kerberos(Jun) |
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more shared library support |
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c++ include file cleanup(Bruce) |
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warn about buggy flex(Bruce) |
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DG-UX, Ultrix, Irix, AIX portability fixes |
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HPUX 10 patches (Vladimir Turin) |
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Added SCO support, (Daniel Harris) |
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mkLinux patches (Tatsuo Ishii) |
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Change geometric box terminology from "length" to "width"(Thomas) |
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Deprecate temporary unstored slope fields in geometric code(Thomas) |
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Remove restart instructions from INSTALL(Bruce) |
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Look in /usr/ucb first for install(Bruce) |
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Fix c++ copy example code(Thomas) |
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Add -o to psql manual page(Bruce) |
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Prevent relname unallocated string length from being copied into database(Bruce) |
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Cleanup for NAMEDATALEN use(Bruce) |
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Fix pg_proc names over 15 chars in output(Bruce) |
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Add strNcpy() function(Bruce) |
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remove some (void) casts that are unnecessary(Bruce) |
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new interfaces directory(Marc) |
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Replace fopen() calls with calls to fd.c functions(Bruce) |
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Make functions static where possible(Bruce) |
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enclose unused functions in #ifdef NOT_USED(Bruce) |
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Remove call to difftime() in timestamp support to fix SunOS(Bruce & Thomas) |
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Changes for Digital Unix |
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Portability fix for pg_dumpall(Bruce) |
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Rename pg_attribute.attnvals to attdisbursion(Bruce) |
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"intro/unix" manual page now "pgintro"(Bruce) |
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"built-in" manual page now "pgbuiltin"(Bruce) |
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"drop" manual page now "drop_table"(Bruce) |
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Add "create_trigger", "drop_trigger" manual pages(Thomas) |
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Add constraints regression test(Vadim & Thomas) |
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Add comments syntax regression test(Thomas) |
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Add PGINDENT and support program(Bruce) |
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Massive commit to run PGINDENT on all *.c and *.h files(Bruce) |
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Files moved to /src/tools directory(Bruce) |
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Bruce Momjian
29 years ago