6 Valid as of 2003-08-01. Update release.sgml later.
11 Allow IPv6 server connections (Nigel Kukard, Johan Jordaan, Bruce, Tom, Kurt
12 Roeckx, Andrew Dunstan)
13 Fix SSL to handle errors cleanly (Nathan Mueller)
14 SSL protocol security and performance improvements (Sean Chittenden)
15 Print lock information when a deadlock is detected (Tom)
16 Update /tmp socket files regularly to avoid their removal (Tom)
17 Enable PAM for MAC OS X (Aaron Hillegass)
18 Make btree indexes fully WAL-safe (Tom)
19 Allow btree index compaction and empty page reuse (Tom)
20 Fix inconsistent index lookups during split of first root page (Tom)
21 Improve free space map allocation logic (Tom)
22 Preserve free space information between postmaster restarts (Tom)
23 Set proper schema permissions in initdb (Peter)
24 Add start time to pg_stat_activity (Neil)
25 New code to detect corrupt disk pages; erase with zero_damaged_pages (Tom)
26 New client/server protocol: faster, no username length limit, allow
28 Add transaction status, tableid, columnid to backend protocol (Tom)
29 Add new binary I/O protocol (Tom)
30 Remove autocommit server setting; move to client applications (Tom)
31 New error message wording, error codes, and three levels of error detail (Tom)
33 _________________________________________________________________
37 Add hashing for GROUP BY aggregates (Tom)
38 Allow nested loops to be smarter about multicolumn indexes (Tom)
39 Allow multi-key hash joins (Tom)
40 Improve constant folding (Tom)
41 Add ability to inline simple SQL functions (Tom)
42 Reduce memory usage for queries using complex functions (Tom)
43 Improve GEQO optimizer performance (Tom)
44 Allow IN/NOT IN to be handled via hash tables (Tom)
45 Improve NOT IN (subquery) performance (Tom)
46 Allow most IN subqueries to be processed as joins (Tom)
47 Allow the postmaster to preload libraries using preload_libraries (Joe)
48 Improve reverse index scan performance (Tom)
49 Improve optimizer cost computations, particularly for subqueries (Tom)
50 Assume WHERE a.x = b.y and b.y = 42 also means a.x = 42 (Tom)
51 Allow hash/merge joins on complex joins (Tom)
52 Allow hash joins for more data types (Tom)
53 Allow join optimization of ANSI joins, disable with join_collapse_limit (Tom)
54 Add from_collapse_limit to control conversion of subqueries to joins (Tom)
55 Use faster regex code from TCL (Henry Spencer, Tom)
56 Use bit-mapped relation sets in the optimizer (Tom)
57 Improve backend startup time (Tom)
58 Improve trigger/constraint performance (Stephan)
60 _________________________________________________________________
64 Rename server parameter server_min_messages to log_min_messages (Bruce)
65 Rename show_*_stats to log_*_stats (Bruce)
66 Rename show_source_port to log_source_port (Bruce)
67 Rename hostname_lookup to log_hostname (Bruce)
68 Add checkpoint_warning to warn of excessive checkpointing (Bruce)
69 New read-only server parameters for localization (Tom)
70 Change debug server log messages to output as DEBUG rather than LOG (Bruce)
71 Prevent server log variables from being turned off by non-super users (Bruce)
72 log_min_messages/client_min_messages now controls debug_* output (Bruce)
73 Add Rendezvous server support (Chris Campbell)
74 Add ability to print only slow statements using log_min_duration_statement
76 Allow pg_hba.conf to accept netmasks in CIDR format (Andrew Dunstan)
77 New is_superuser read-only variable (Tom)
78 New server-side parameter log_error_verbosity to control error detail (Tom)
79 postgres --help-config now dumps server config variables (Tom)
80 Make default shared_buffers 1000 and max_connections 100, if possible (Tom)
81 Add new columns in pg_settings: context, type, source , min_val, max_val (Joe)
82 Prevent assign_session_authorization() from being confused by
83 all-numeric user names (Tom)
85 _________________________________________________________________
89 New SQL-standard information schema (Peter)
90 Add read-only transactions (Peter)
91 Add server variable regex_flavor to control regular expression
93 Allow ORDER BY in FROM subqueries to be honored by outer queries (Tom)
94 Print key name in foreign-key violation messages (Dmitry Tkach)
95 Allow users to see their own queries in pg_stat_activity (Kevin Brown)
96 Allow subquery aggregates to reference upper query columns (?) (Tom)
97 Add option to prevent auto-addition of tables referenced in query (Nigel J.
99 Allow dollar signs in identifiers, except as first character (Tom)
100 Allow UPDATE ... SET col = DEFAULT (Rod)
101 Allow expressions to be used in LIMIT/OFFSET (Tom)
103 _________________________________________________________________
107 Make CREATE SEQUENCE grammar more SQL1999 standards compliant (Neil)
108 Add FOR EACH STATEMENT statement-level triggers (Neil Conway)
109 Add DOMAIN CHECK constraints (Rod)
110 Add ALTER DOMAIN .. SET / DROP NOT NULL, SET / DROP DEFAULT, ADD / DROP
112 Allow zero-column tables (Tom)
113 Have ALTER TABLE ... ADD PRIMARY KEY add NOT NULL constraint (Rod)
114 Add ALTER DOMAIN OWNER (Rod)
115 Add pg_trigger.tgenabled to disable triggers? (Neil)
116 Add ALTER TABLE ... WITHOUT OIDS? (Rod)
117 Have parser honor foreign-key constraints if created via ALTER TABLE ADD
119 Add ALTER SEQUENCE to modify min/max/increment/cache/cycle values (Rod)
120 Add ALTER TABLE ... CLUSTER ON (Alvaro Herrera)
121 Improve DOMAIN automatic type casting (Tom)
122 Disallow dollar signs in operator names (Tom)
123 Allow SQL200X inheritance syntax LIKE <subtable>, INCLUDING DEFAULTS? (Rod)
124 Object owners can allow grantees to grant privilege to others?
126 _________________________________________________________________
130 Add ON COMMIT PRESERVE ROWS for temp tables (Gavin)
131 Allow cursors outside transactions using WITH HOLD (Neil)
132 Make MOVE/FETCH 0 actually move/fetch 0 (Bruce)
133 Cause FETCH 1 to return the current cursor row, or zero if at
134 beginning/end of cursor, per SQL spec (Bruce)
135 Have MOVE return 0 or 1 depending on cursor position (Bruce)
136 Properly handle SCROLL with cursors, or report an error (Tom)
137 Implement SQL92-compatible FIRST, LAST, ABSOLUTE n, RELATIVE n options
138 for FETCH and MOVE (Tom)
139 Allow EXPLAIN on DECLARE CURSOR (Tom)
140 Allow CLUSTER to use index marked as pre-clustered by default (Alvaro Herrera)
141 Allow CLUSTER without tablename clusters all tables (Alvaro Herrera)
142 Prevent CLUSTER on partial indexes (Tom)
143 Allow \r and \r\n termination for COPY files (Bruce)
144 Disallow literal carriage return as a data value, backslash-carriage-return
145 and \r still allowed (Bruce)
146 COPY changes (binary, \.)? (Tom)
147 Recover from COPY IN/OUT failure cleanly (Tom)
148 Reduce memory used by COPY (Tom)
149 Make TRUNCATE transaction-safe (Rod)
150 Multiple pg_dump fixes, including tar format and large objects
151 Allow pg_dump to dump specific schemas (Neil)
152 Allow pg_dump to preserve column storage characteristics (Christopher)
153 Allow pg_dump to preserve CLUSTER characteristics (Christopher)
154 Have pg_dumpall use GRANT/REVOKE to dump database-level permissions (Tom)
155 Allow pg_dumpall to support the -a, -s, -x options of pg_dump (Tom)
156 Prevent pg_dump from lowercasing identifiers specified on the command line (Tom)
157 Allow EXPLAIN EXECUTE (Neil)
158 Allow pg_get_constraintdef() to support UNIQUE, PRIMARY KEY and
159 CHECK constraints (Christopher)
160 Improve VACUUM performance on indexes by reducing WAL traffic (Tom)
161 Allow pg_ctl to better handle non-standard ports (Greg)
162 Functional indexes now support indexes on column expressions (Tom)
163 Syntax errors now reported as 'syntax error' rather than 'parse error' (Tom)
164 Have SHOW TRANSACTION_ISOLATION match input to SET TRANSACTION_ISOLATION (Tom)
165 Have COMMENT ON DATABASE on non-local database generate a warning (Tom)
167 _________________________________________________________________
169 Data Types and Functions
171 New extra_float_digits server parameter to control float precision display
172 (Pedro Ferreira, Tom)
173 Allow +1300 as a numeric timezone specifier, for FJST (Tom)
174 Remove rarely used oidrand(), oidsrand(), and userfntest() functions (Neil)
175 Add md5() function to main server, already in /contrib/pgcrypto (Joe)
176 Increase date range of timestamp (John Cochran)
177 Change EXTRACT(EPOCH FROM timestamp) so timestamp without time zone
178 is assumed to be in local time, not GMT (Tom)
179 Trap division by zero in case the operating system doesn't prevent it (Tom)
180 Change the NUMERIC data type internally to base 10000 (Tom)
181 New hostmast() function (Greg Wickham)
182 Fixes for to_char() (Karel)
183 Allow functions that can take any argument data type and return
184 any data type, using ANYELEMENT and ANYARRAY (Joe)
185 Arrays may now be specified as ARRAY[1,2,3], ARRAY[['a','b'],['c','d']],
186 or ARRAY[ARRAY[ARRAY[2]]] (Joe)
187 Allow proper comparisons for arrays (Joe)
188 Allow indexes on array columns, and used in ORDER BY and DISTINCT (Joe)
189 Allow WHERE qualification 'expr <oper> ANY/SOME/ALL (array-expr)' (Joe)
190 Allow polymorphic SQL functions (Tom, Joe)
191 Allow array concatenation with '||' and normal array comparisons (Joe)
192 New array functions array_append(), array_cat(), array_lower(),
193 array_prepend(), array_to_string(), array_upper(), string_to_array() (Joe)
194 Allow user defined aggregates to use polymorphic functions (Joe)
195 Allow polymorphic user defined aggregates (Joe)
196 Allow assignments to empty arrays (Joe)
197 Allow 60 in seconds fields of timestamp, time, interval input values (Tom)
198 Allow PREPARE/bind of utility commands like FETCH and EXPLAIN (Tom)
199 Allow CIDR data type to be cast to text (Tom)
200 Allow the creation of special LIKE indexes for non-C locales (Peter)
201 Disallow invalid timezone names (Tom)
202 Trim trailing spaces when CHAR() data is cast to VARCHAR or TEXT (Tom)
203 Make FLOAT(p) measure the precision p in bits, not decimal digits (Tom)
204 Add IPv6 support to the inet and cidr data types (Michael Graff)
205 Add family() function to report whether address is IPv4 or IPv6 (Michael Graff)
206 Have SHOW DATESTYLE generate output similar to that used by SET DATESTYLE (Tom)
207 Change DATESTYLE to output its value in a more common format (Tom)
208 Make EXTRACT(TIMEZONE) and SET/SHOW TIMEZONE follow the SQL convention
209 for the sign of timezone offsets, ie, positive is east from UTC (Tom)
210 Fix date_trunc('quarter',...) (B?jthe Zolt?n)
211 Make initcap() more compatible with Oracle (Mike Nolan)
212 Honor only DateStyle setting for date entry without a four-digit year (Greg)
213 Add new DateStyle values MDY, DMY, and YMD, honor US and European for
214 backward compatibility (Tom)
215 'now' will no longer work as a default, use now() (change required for prepared
217 Assume NaN value to be larger than any other value in comparisons (Tom)
218 Prevent timestamp from supressing ':00' seconds display
220 _________________________________________________________________
222 Server-side Languages
224 Prevent PL/pgSQL crash when RETURN NEXT is used on a zero-row record (Tom)
225 Make PL/python's spi_execute interface handle NULLs properly (Andrew Bosma)
226 Allow PL/pgSQL to declare variables of composite types without %ROWTYPE (Tom)
227 Fix PL/python _quote() function to handle big integers (?)
228 Make PL/python an untrusted language, now called plpythonu (Kevin Jacobs, Tom)
229 Change PL/pgSQL EXECUTE INTO to CREATE TABLE AS EXECUTE? (Peter)
230 Allow polymorphic PL/pgSQL functions (Tom, Joe)
231 Improved compiled function caching mechanism in PL/pgSQL with full
232 support for polymorphism (Tom, Joe)
233 Add new $0 parameter in PL/pgSQL representing the function's actual
234 return type (Tom, Joe)
236 _________________________________________________________________
240 Add "\pset pager always" to always use pager (Greg)
241 Improve tab completion (Rod, Ross Reedstrom, Ian Barwick)
242 Reorder \? help into groupings (Harald Armin Massa, Bruce)
243 Add schema, cast, and conversion backslash commands (Christopher)
244 \encoding now tracks client_encoding server variable (Tom)
245 Save edit history into readline history (Ross)
246 Improve \d display (Christopher)
247 Enhance HTML mode to be more standards-compliant (Greg)
248 New '\set autocommit off' capability (Tom)
249 New '\set verbosity' to control error detail (Tom)
250 New %T prompt string to show transaction status (Tom)
252 _________________________________________________________________
256 Allow PQcmdTuples() to return row counts for MOVE and FETCH (Neil)
257 Add PQfreemem() for freeing memory on Win32, suggest for NOTIFY (Bruce)
258 Document service capability, and add sample file (Bruce)
259 Make PQsetdbLogin() have the same defaults as PQconnectdb() (Tom)
260 Allow libpq to cleanly fail when result sets are too large (Tom)
261 Improve performance of PGunescapeBytea() (Ben Lamb)
262 Allow thread-safe libpq with --enable-thread-safety (Lee Kindness, Philip Yarra)
263 Allow pqInternalNotice() to accept a format string and args instead of
264 just a preformatted message (Tom, Sean Chittenden)
265 Allow control SSL negotiation with sslmode values "disable", "allow",
266 "Prefer", and "require" (Jon Jensen)
268 _________________________________________________________________
272 Allow setNull on updateable resultsets
273 Allow executeBatch on a prepared statement (Barry)
274 Support SSL connections (Barry)
275 Handle schema names in result sets (Paul Sorenson)
276 Add refcursor support (Nic Ferrier)
278 _________________________________________________________________
280 Miscellaneous Interfaces
282 Prevent possible memory leak or core dump during libpgtcl shutdown (Tom)
283 Add ecpg Informix compatibility (Michael)
284 Add ecpg DECIMAL type that is fixed length, for Informix (Michael)
285 Allow thread-safe ecpg with --enable-thread-safety (Lee Kindness, Bruce)
286 Allow client interfaces to compile under MinGW/win32 (Bruce)
287 Move python client interface to http://www.pygresql.org (Marc)
289 _________________________________________________________________
293 Prevent need for separate platform geometry regression result files (Tom)
294 Improved PPC locking primitive (Reinhard Max)
295 Embed LD_LIBRARY_PATH used for build process into binaries (Billy)
296 New palloc0 to allocate and clear memory (Bruce)
297 Fix locking code for s390x CPU (64-bit) (Tom)
298 Allow OpenBSD to use local indent credentials (William Ahern)
299 Allow read-only query plans (Tom)
300 Add Darwin startup scripts (David Wheeler)
301 Allow libpq to compile with Borland C++ compiler (Lester Godwin, Karl Waclawek)
302 Use our own version of getopt_long() if needed (Peter)
303 Convert administration scripts to C (Peter)
304 Bison >=1.85 is now required for grammar changes
305 Merge documentation into one book (Peter)
306 Add Win32 compatibility functions (Bruce)
307 New ereport() function for error reporting (Tom)
308 Support Intel Linux compiler (Peter)
309 Improve Linux startup scripts (Slawomir Sudnik, Darko Prenosil)
310 Add support for AMD Opteron and Itanium (Jeffrey W. Baker, Bruce)
312 _________________________________________________________________
316 Change dbmirror license to BSD
317 Improve earthdistance (Bruno Wolff III)
318 Portability improvements to pgcrypto (Marko Kreen)
319 Prevent xml crash (John Gray, Michael Richards)
322 Update cube (Bruno Wolff III)
323 Update earthdistance to use cube (Bruno Wolff III)
324 Update btree_gist (Oleg)
325 New tsearch2 full-text search module (Oleg, Teodor)
326 Add hashed based crosstab function to tablefuncs (Joe)
327 Add serial column to order connectby() siblings in tablefuncs (Nabil Sayegh,Joe)
328 Add named persistent connections to dblink (Shridhar Daithanka)
329 New pg_autovacuum allows automatic VACUUM (Matthew T. O'Connor)
330 Allow pgbench to honor PGHOST, PGPORT, PGUSER env. variables (Tatsuo)
331 Improve intarray (Teodor Sigaev)
332 Improve pgstattuple (Rod)
333 Fix bug in metaphone() in fuzzystrmatch
334 Improve adddepend (Rod)
335 Update spi/timetravel (B?jthe Zolt?n)
336 Fix dbase -s option (Thomas Behr)
338 _________________________________________________________________
342 Release date: 2003-05-22
344 This has a variety of fixes from 7.3.2.
345 _________________________________________________________________
347 Migration to version 7.3.3
349 A dump/restore is *not* required for those running 7.3.*.
350 _________________________________________________________________
354 Repair sometimes-incorrect computation of StartUpID after a crash
355 Avoid slowness with lots of deferred triggers in one transaction (Stephan)
356 Don't lock referenced row when UPDATE doesn't change foreign key's value
358 Use -fPIC not -fpic on Sparc (Tom Callaway)
359 Repair lack of schema-awareness in contrib/reindexdb
360 Fix contrib/intarray error for zero-element result array (Teodor)
361 Ensure createuser script will exit on control-C (Oliver)
362 Fix errors when the type of a dropped column has itself been dropped
363 CHECKPOINT does not cause database panic on failure in noncritical steps
364 Accept 60 in seconds fields of timestamp, time, interval input values
365 Issue notice, not error, if TIMESTAMP, TIME, or INTERVAL precision too
367 Fix abstime-to-time cast function (fix is not applied unless you initdb)
368 Fix pg_proc entry for timestamptz_izone (fix is not applied unless you
370 Make EXTRACT(EPOCH FROM timestamp without time zone) treat input as
372 'now'::timestamptz gave wrong answer if timezone changed earlier in
374 HAVE_INT64_TIMESTAMP code for time with timezone overwrote its input
375 Accept GLOBAL TEMP/TEMPORARY as a synonym for TEMPORARY
376 Avoid improper schema-permissions-check failure in foreign-key triggers
377 Fix bugs in foreign-key triggers for SET DEFAULT action
378 Fix incorrect time-qual check in row fetch for UPDATE and DELETE triggers
379 Foreign-key clauses were parsed but ignored in ALTER TABLE ADD COLUMN
380 Fix createlang script breakage for case where handler function already
382 Fix misbehavior on zero-column tables in pg_dump, COPY, ANALYZE, other
384 Fix misbehavior of func_error() on type names containing '%'
385 Fix misbehavior of replace() on strings containing '%'
386 Regular-expression patterns containing certain multibyte characters failed
387 Account correctly for NULLs in more cases in join size estimation
388 Avoid conflict with system definition of isblank() function or macro
389 Fix failure to convert large code point values in EUC_TW conversions
391 Fix error recovery for SSL_read/SSL_write calls
392 Don't do early constant-folding of type coercion expressions
393 Validate page header fields immediately after reading in any page
394 Repair incorrect check for ungrouped variables in unnamed joins
395 Fix buffer overrun in to_ascii (Guido Notari)
396 contrib/ltree fixes (Teodor)
397 Fix core dump in deadlock detection on machines where char is unsigned
398 Avoid running out of buffers in many-way indexscan (bug introduced in 7.3)
399 Fix planner's selectivity estimation functions to handle domains properly
400 Fix dbmirror memory-allocation bug (Steven Singer)
401 Prevent infinite loop in ln(numeric) due to roundoff error.
402 GROUP BY got confused if there were multiple equal GROUP BY items
403 Fix bad plan when inherited UPDATE/DELETE references another inherited
405 Prevent clustering on incomplete (partial or non-NULL-storing) indexes
406 Service shutdown request at proper time if it arrives while still
408 Fix left-links in temporary indexes (could make backwards scans miss
410 Fix incorrect handling of client_encoding setting in postgresql.conf
412 Fix failure to respond to 'pg_ctl stop -m fast' after Async_NotifyHandler
414 Fix SPI for case where rule contains multiple statements of the same type
415 Fix problem with checking for wrong type of access permission in rule query
416 Fix problem with EXCEPT in CREATE RULE
417 Prevent problem with dropping temp tables having serial columns
418 Fix replace_vars_with_subplan_refs failure in complex views
419 Fix regexp slowness in single-byte encodings (Tatsuo)
420 Allow qualified type names in CREATE CAST and DROP CAST
421 Accept 'SETOF type[]', which formerly had to be written 'SETOF _type'
422 Fix pg_dump core dump in some cases with procedural languages
423 Force ISO datestyle in pg_dump output, for portability (Oliver)
424 pg_dump failed to handle error return from lo_read (Oleg Drokin)
425 pg_dumpall failed with groups having no members (Nick Eskelinen)
426 pg_dumpall failed to recognize --globals-only switch
427 pg_restore failed to restore blobs if -X disable-triggers is specified
428 Repair intrafunction memory leak in plpgsql
429 pltcl's elog command dumped core if given wrong parameters (Ian Harding)
430 plpython used wrong value of atttypmod (Brad McLean)
431 Fix improper quoting of boolean values in Python interface (D'Arcy)
432 Added addDataType() method to PGConnection interface for JDBC
433 Fixed various problems with updateable ResultSets for JDBC (Shawn Green)
434 Fixed various problems with DatabaseMetaData for JDBC (Kris Jurka,
436 Fixed problem with parsing table ACLs in JDBC
437 Better error message for character set conversion problems in JDBC
438 _________________________________________________________________
442 Release date: 2003-02-04
444 This has a variety of fixes from 7.3.1.
445 _________________________________________________________________
447 Migration to version 7.3.2
449 A dump/restore is *not* required for those running 7.3.*.
450 _________________________________________________________________
454 Restore creation of OID column in CREATE TABLE AS / SELECT INTO
455 Fix pg_dump core dump when dumping views having comments
456 Dump DEFERRABLE/INITIALLY DEFERRED constraints properly
457 Fix UPDATE when child table's column numbering differs from parent
458 Increase default value of max_fsm_relations
459 Fix problem when fetching backwards in a cursor for a single-row query
460 Make backward fetch work properly with cursor on SELECT DISTINCT query
461 Fix problems with loading pg_dump files containing contrib/lo usage
462 Fix problem with all-numeric user names
463 Fix possible memory leak and core dump during disconnect in libpgtcl
464 Make plpython's spi_execute command handle nulls properly (Andrew Bosma)
465 Adjust plpython error reporting so that its regression test passes again
466 Work with bison 1.875
467 Handle mixed-case names properly in plpgsql's %type (Neil)
468 Fix core dump in pltcl when executing a query rewritten by a rule
469 Repair array subscript overruns (per report from Yichen Xie)
470 Reduce MAX_TIME_PRECISION from 13 to 10 in floating-point case
471 Correctly case-fold variable names in per-database and per-user settings
472 Fix coredump in plpgsql's RETURN NEXT when SELECT into record returns
474 Fix outdated use of pg_type.typprtlen in python client interface
475 Correctly handle fractional seconds in timestamps in JDBC driver
476 Improve performance of getImportedKeys() in JDBC
477 Make shared-library symlinks work standardly on HPUX (Giles)
478 Repair inconsistent rounding behavior for timestamp, time, interval
479 SSL negotiation fixes (Nathan Mueller)
480 Make libpq's ~/.pgpass feature work when connecting with PQconnectDB
483 Add casts between types lo and oid in contrib/lo
484 fastpath code now checks for privilege to call function
485 _________________________________________________________________
489 Release date: 2002-12-18
491 This has a variety of fixes from 7.3.
492 _________________________________________________________________
494 Migration to version 7.3.1
496 A dump/restore is *not* required for those running 7.3. However, it
497 should be noted that the main PostgreSQL interface library, libpq, has
498 a new major version number for this release, which may require
499 recompilation of client code in certain cases.
500 _________________________________________________________________
504 Fix a core dump of COPY TO when client/server encodings don't match (Tom)
505 Allow pg_dump to work with pre-7.2 servers (Philip)
506 /contrib/adddepend fixes (Tom)
507 Fix problem with deletion of per-user/per-database config settings (Tom)
508 /contrib/vacuumlo fix (Tom)
509 Allow 'password' encryption even when pg_shadow contains MD5 passwords
511 /contrib/dbmirror fix (Steven Singer)
512 Optimizer fixes (Tom)
513 /contrib/tsearch fixes (Teodor Sigaev, Magnus)
514 Allow locale names to be mixed case (Nicolai Tufar)
515 Increment libpq library's major version number (Bruce)
516 pg_hba.conf error reporting fixes (Bruce, Neil)
517 Add SCO Openserver 5.0.4 as a supported platform (Bruce)
518 Prevent EXPLAIN from crashing server (Tom)
519 SSL fixes (Nathan Mueller)
520 Prevent composite column creation via ALTER TABLE (Tom)
521 _________________________________________________________________
525 Release date: 2002-11-27
526 _________________________________________________________________
530 Major changes in this release:
533 Schemas allow users to create objects in separate namespaces,
534 so two people or applications can have tables with the same
535 name. There is also a public schema for shared tables.
536 Table/index creation can be restricted by removing permissions
537 on the public schema.
540 PostgreSQL now supports the ALTER TABLE ... DROP COLUMN
544 Functions returning multiple rows and/or multiple columns are
545 now much easier to use than before. You can call such a "table
546 function" in the SELECT FROM clause, treating its output like a
547 table. Also, PL/pgSQL functions can now return sets.
550 PostgreSQL now supports prepared queries, for improved
554 PostgreSQL now records object dependencies, which allows
555 improvements in many areas. "DROP" statements now take either
556 CASCADE or RESTRICT to control whether dependent objects are
560 Functions and procedural languages now have privileges, and
561 functions can be defined to run with the privileges of their
565 Both multibyte and locale support are now always enabled.
568 A variety of logging options have been enhanced.
571 A large number of interfaces have been moved to
572 http://gborg.postgresql.org where they can be developed and
573 released independently.
575 Functions/Identifiers
576 By default, functions can now take up to 32 parameters, and
577 identifiers can be up to 63 bytes long. Also, OPAQUE is now
578 deprecated: there are specific "pseudo-datatypes" to represent
579 each of the former meanings of OPAQUE in function argument and
581 _________________________________________________________________
583 Migration to version 7.3
585 A dump/restore using pg_dump is required for those wishing to migrate
586 data from any previous release. If your application examines the
587 system catalogs, additional changes will be required due to the
588 introduction of schemas in 7.3; for more information, see:
589 http://www.ca.postgresql.org/docs/momjian/upgrade_tips_7.3.
591 Observe the following incompatibilities:
593 * Pre-6.3 clients are no longer supported.
594 * "pg_hba.conf" now has a column for the user name and additional
595 features. Existing files need to be adjusted.
596 * Several "postgresql.conf" logging parameters have been renamed.
597 * LIMIT #,# has been disabled; use LIMIT # OFFSET #.
598 * "INSERT" statements with column lists must specify a value for
599 each specified column. For example, INSERT INTO tab (col1, col2)
600 VALUES ('val1') is now invalid. It's still allowed to supply fewer
601 columns than expected if the "INSERT" does not have a column list.
602 * serial columns are no longer automatically UNIQUE; thus, an index
603 will not automatically be created.
604 * A "SET" command inside an aborted transaction is now rolled back.
605 * "COPY" no longer considers missing trailing columns to be null.
606 All columns need to be specified. (However, one may achieve a
607 similar effect by specifying a column list in the "COPY" command.)
608 * The data type timestamp is now equivalent to timestamp without
609 time zone, instead of timestamp with time zone.
610 * Pre-7.3 databases loaded into 7.3 will not have the new object
611 dependencies for serial columns, unique constraints, and foreign
612 keys. See the directory "contrib/adddepend/" for a detailed
613 description and a script that will add such dependencies.
614 * An empty string ('') is no longer allowed as the input into an
615 integer field. Formerly, it was silently interpreted as 0.
616 _________________________________________________________________
622 Add pg_locks view to show locks (Neil)
623 Security fixes for password negotiation memory allocation (Neil)
624 Remove support for version 0 FE/BE protocol (PostgreSQL 6.2 and
626 Reserve the last few backend slots for superusers, add parameter
627 superuser_reserved_connections to control this (Nigel J. Andrews)
628 _________________________________________________________________
632 Improve startup by calling localtime() only once (Tom)
633 Cache system catalog information in flat files for faster startup
635 Improve caching of index information (Tom)
636 Optimizer improvements (Tom, Fernando Nasser)
637 Catalog caches now store failed lookups (Tom)
638 Hash function improvements (Neil)
639 Improve performance of query tokenization and network handling (Peter)
640 Speed improvement for large object restore (Mario Weilguni)
641 Mark expired index entries on first lookup, saving later heap fetches
643 Avoid excessive NULL bitmap padding (Manfred Koizar)
644 Add BSD-licensed qsort() for Solaris, for performance (Bruce)
645 Reduce per-row overhead by four bytes (Manfred Koizar)
646 Fix GEQO optimizer bug (Neil Conway)
647 Make WITHOUT OID actually save four bytes per row (Manfred Koizar)
648 Add default_statistics_target variable to specify ANALYZE buckets
650 Use local buffer cache for temporary tables so no WAL overhead (Tom)
651 Improve free space map performance on large tables (Stephen Marshall,
653 Improved WAL write concurrency (Tom)
654 _________________________________________________________________
658 Add privileges on functions and procedural languages (Peter)
659 Add OWNER to CREATE DATABASE so superusers can create databases
660 on behalf of unprivileged users. (Gavin Sherry, Tom)
661 Add new object permission bits EXECUTE and USAGE (Tom)
662 Add SET SESSION AUTHORIZATION DEFAULT and RESET SESSION AUTHORIZATION
664 Allow functions to be executed with the privilege of the function
666 _________________________________________________________________
670 Server log messages now tagged with LOG, not DEBUG (Bruce)
671 Add user column to pg_hba.conf (Bruce)
672 Have log_connections output two lines in log file (Tom)
673 Remove debug_level from postgresql.conf, now server_min_messages
675 New ALTER DATABASE/USER ... SET command for per-user/database
676 initialization (Peter)
677 New parameters server_min_messages and client_min_messages to
678 control which messages are sent to the server logs or client
680 Allow pg_hba.conf to specify lists of users/databases separated by
681 commas, group names prepended with +, and file names prepended
683 Remove secondary password file capability and pg_password utility
685 Add variable db_user_namespace for database-local user names (Bruce)
686 SSL improvements (Bear Giles)
687 Make encryption of stored passwords the default (Bruce)
688 Allow pg_statistics to be reset by calling pg_stat_reset()
690 Add log_duration parameter (Bruce)
691 Rename debug_print_query to log_statement (Bruce)
692 Rename show_query_stats to show_statement_stats (Bruce)
693 Add param log_min_error_statement to print commands to logs on error
695 _________________________________________________________________
699 Make cursors insensitive, meaning their contents do not change (Tom)
700 Disable LIMIT #,# syntax; now only LIMIT # OFFSET # supported (Bruce)
701 Increase identifier length to 63 (Neil, Bruce)
702 UNION fixes for merging >= 3 columns of different lengths (Tom)
703 Add DEFAULT keyword to INSERT, e.g., INSERT ... (..., DEFAULT, ...)
705 Allow views to have default values using ALTER COLUMN ... SET DEFAULT
707 Fail on INSERTs with column lists that don't supply all column
708 values, e.g., INSERT INTO tab (col1, col2) VALUES ('val1'); (Rod)
709 Fix for join aliases (Tom)
710 Fix for FULL OUTER JOINs (Tom)
711 Improve reporting of invalid identifier and location (Tom, Gavin)
712 Fix OPEN cursor(args) (Tom)
713 Allow 'ctid' to be used in a view and currtid(viewname) (Hiroshi)
714 Fix for CREATE TABLE AS with UNION (Tom)
715 SQL99 syntax improvements (Thomas)
716 Add statement_timeout variable to cancel queries (Bruce)
717 Allow prepared queries with PREPARE/EXECUTE (Neil)
718 Allow FOR UPDATE to appear after LIMIT/OFFSET (Bruce)
719 Add variable autocommit (Tom, David Van Wie)
720 _________________________________________________________________
724 Make equals signs optional in CREATE DATABASE (Gavin Sherry)
725 Make ALTER TABLE OWNER change index ownership too (Neil)
726 New ALTER TABLE tabname ALTER COLUMN colname SET STORAGE controls
727 TOAST storage, compression (John Gray)
728 Add schema support, CREATE/DROP SCHEMA (Tom)
729 Create schema for temporary tables (Tom)
730 Add variable search_path for schema search (Tom)
731 Add ALTER TABLE SET/DROP NOT NULL (Christopher)
732 New CREATE FUNCTION volatility levels (Tom)
733 Make rule names unique only per table (Tom)
734 Add 'ON tablename' clause to DROP RULE and COMMENT ON RULE (Tom)
735 Add ALTER TRIGGER RENAME (Joe)
736 New current_schema() and current_schemas() inquiry functions (Tom)
737 Allow functions to return multiple rows (table functions) (Joe)
738 Make WITH optional in CREATE DATABASE, for consistency (Bruce)
739 Add object dependency tracking (Rod, Tom)
740 Add RESTRICT/CASCADE to DROP commands (Rod)
741 Add ALTER TABLE DROP for non-CHECK CONSTRAINT (Rod)
742 Autodestroy sequence on DROP of table with SERIAL (Rod)
743 Prevent column dropping if column is used by foreign key (Rod)
744 Automatically drop constraints/functions when object is dropped (Rod)
745 Add CREATE/DROP OPERATOR CLASS (Bill Studenmund, Tom)
746 Add ALTER TABLE DROP COLUMN (Christopher, Tom, Hiroshi)
747 Prevent inherited columns from being removed or renamed (Alvaro
749 Fix foreign key constraints to not error on intermediate database
751 Propagate column or table renaming to foreign key constraints
752 Add CREATE OR REPLACE VIEW (Gavin, Neil, Tom)
753 Add CREATE OR REPLACE RULE (Gavin, Neil, Tom)
754 Have rules execute alphabetically, returning more predictable values
756 Triggers are now fired in alphabetical order (Tom)
757 Add /contrib/adddepend to handle pre-7.3 object dependencies (Rod)
758 Allow better casting when inserting/updating values (Tom)
759 _________________________________________________________________
763 Have COPY TO output embedded carriage returns and newlines as \r and
765 Allow DELIMITER in COPY FROM to be 8-bit clean (Tatsuo)
766 Make pg_dump use ALTER TABLE ADD PRIMARY KEY, for performance (Neil)
767 Disable brackets in multistatement rules (Bruce)
768 Disable VACUUM from being called inside a function (Bruce)
769 Allow dropdb and other scripts to use identifiers with spaces (Bruce)
770 Restrict database comment changes to the current database
771 Allow comments on operators, independent of the underlying function
773 Rollback SET commands in aborted transactions (Tom)
774 EXPLAIN now outputs as a query (Tom)
775 Display condition expressions and sort keys in EXPLAIN (Tom)
776 Add 'SET LOCAL var = value' to set configuration variables for a
777 single transaction (Tom)
778 Allow ANALYZE to run in a transaction (Bruce)
779 Improve COPY syntax using new WITH clauses, keep backward
780 compatibility (Bruce)
781 Fix pg_dump to consistently output tags in non-ASCII dumps (Bruce)
782 Make foreign key constraints clearer in dump file (Rod)
783 Add COMMENT ON CONSTRAINT (Rod)
784 Allow COPY TO/FROM to specify column names (Brent Verner)
785 Dump UNIQUE and PRIMARY KEY constraints as ALTER TABLE (Rod)
786 Have SHOW output a query result (Joe)
787 Generate failure on short COPY lines rather than pad NULLs (Neil)
788 Fix CLUSTER to preserve all table attributes (Alvaro Herrera)
789 New pg_settings table to view/modify GUC settings (Joe)
790 Add smart quoting, portability improvements to pg_dump output (Peter)
791 Dump serial columns out as SERIAL (Tom)
792 Enable large file support, >2G for pg_dump (Peter, Philip Warner,
794 Disallow TRUNCATE on tables that are involved in referential
796 Have TRUNCATE also auto-truncate the toast table of the relation (Tom)
797 Add clusterdb utility that will auto-cluster an entire database
798 based on previous CLUSTER operations (Alvaro Herrera)
799 Overhaul pg_dumpall (Peter)
800 Allow REINDEX of TOAST tables (Tom)
801 Implemented START TRANSACTION, per SQL99 (Neil)
802 Fix rare index corruption when a page split affects bulk delete (Tom)
803 Fix ALTER TABLE ... ADD COLUMN for inheritance (Alvaro Herrera)
804 _________________________________________________________________
806 Data Types and Functions
808 Fix factorial(0) to return 1 (Bruce)
809 Date/time/timezone improvements (Thomas)
810 Fix for array slice extraction (Tom)
811 Fix extract/date_part to report proper microseconds for timestamp
813 Allow text_substr() and bytea_substr() to read TOAST values more
814 efficiently (John Gray)
815 Add domain support (Rod)
816 Make WITHOUT TIME ZONE the default for TIMESTAMP and TIME data types
818 Allow alternate storage scheme of 64-bit integers for date/time types
819 using --enable-integer-datetimes in configure (Thomas)
820 Make timezone(timestamptz) return timestamp rather than a string
822 Allow fractional seconds in date/time types for dates prior to 1BC
824 Limit timestamp data types to 6 decimal places of precision (Thomas)
825 Change timezone conversion functions from timetz() to timezone()
827 Add configuration variables datestyle and timezone (Tom)
828 Add OVERLAY(), which allows substitution of a substring in a string
830 Add SIMILAR TO (Thomas, Tom)
831 Add regular expression SUBSTRING(string FROM pat FOR escape) (Thomas)
832 Add LOCALTIME and LOCALTIMESTAMP functions (Thomas)
833 Add named composite types using CREATE TYPE typename AS (column)
835 Allow composite type definition in the table alias clause (Joe)
836 Add new API to simplify creation of C language table functions (Joe)
837 Remove ODBC-compatible empty parentheses from calls to SQL99
838 functions for which these parentheses do not match the standard
840 Allow macaddr data type to accept 12 hex digits with no separators
842 Add CREATE/DROP CAST (Peter)
843 Add IS DISTINCT FROM operator (Thomas)
844 Add SQL99 TREAT() function, synonym for CAST() (Thomas)
845 Add pg_backend_pid() to output backend pid (Bruce)
846 Add IS OF / IS NOT OF type predicate (Thomas)
847 Allow bit string constants without fully-specified length (Thomas)
848 Allow conversion between 8-byte integers and bit strings (Thomas)
849 Implement hex literal conversion to bit string literal (Thomas)
850 Allow table functions to appear in the FROM clause (Joe)
851 Increase maximum number of function parameters to 32 (Bruce)
852 No longer automatically create index for SERIAL column (Tom)
853 Add current_database() (Rod)
854 Fix cash_words() to not overflow buffer (Tom)
855 Add functions replace(), split_part(), to_hex() (Joe)
856 Fix LIKE for bytea as a right-hand argument (Joe)
857 Prevent crashes caused by SELECT cash_out(2) (Tom)
858 Fix to_char(1,'FM999.99') to return a period (Karel)
859 Fix trigger/type/language functions returning OPAQUE to return
861 _________________________________________________________________
865 Add additional encodings: Korean (JOHAB), Thai (WIN874), Vietnamese
866 (TCVN), Arabic (WIN1256), Simplified Chinese (GBK), Korean (UHC)
868 Enable locale support by default (Peter)
869 Add locale variables (Peter)
870 Escape byes >= 0x7f for multibyte in PQescapeBytea/PQunescapeBytea
872 Add locale awareness to regular expression character classes
873 Enable multibyte support by default (Tatso)
874 Add GB18030 multibyte support (Bill Huang)
875 Add CREATE/DROP CONVERSION, allowing loadable encodings (Tatsuo,
877 Add pg_conversion table (Tatsuo)
878 Add SQL99 CONVERT() function (Tatsuo)
879 pg_dumpall, pg_controldata, and pg_resetxlog now national-language
881 New and updated translations
882 _________________________________________________________________
884 Server-side Languages
886 Allow recursive SQL function (Peter)
887 Change PL/Tcl build to use configured compiler and Makefile.shlib
889 Overhaul the PL/pgSQL FOUND variable to be more Oracle-compatible
891 Allow PL/pgSQL to handle quoted identifiers (Tom)
892 Allow set-returning PL/pgSQL functions (Neil)
893 Make PL/pgSQL schema-aware (Joe)
894 Remove some memory leaks (Nigel J. Andrews, Tom)
895 _________________________________________________________________
899 Don't lowercase psql \connect database name for 7.2.0 compatibility
901 Add psql \timing to time user queries (Greg Sabino Mullane)
902 Have psql \d show index information (Greg Sabino Mullane)
903 New psql \dD shows domains (Jonathan Eisler)
904 Allow psql to show rules on views (Paul ?)
905 Fix for psql variable substitution (Tom)
906 Allow psql \d to show temporary table structure (Tom)
907 Allow psql \d to show foreign keys (Rod)
908 Fix \? to honor \pset pager (Bruce)
909 Have psql reports its version number on startup (Tom)
910 Allow \copy to specify column names (Tom)
911 _________________________________________________________________
915 Add $HOME/.pgpass to store host/user password combinations (Alvaro
917 Add PQunescapeBytea() function to libpq (Patrick Welche)
918 Fix for sending large queries over non-blocking connections
920 Fix for libpq using timers on Win9X (David Ford)
921 Allow libpq notify to handle servers with different-length
923 Add libpq PQescapeString() and PQescapeBytea() to Win32 (Bruce)
924 Fix for SSL with non-blocking connections (Jack Bates)
925 Add libpq connection timeout parameter (Denis A Ustimenko)
926 _________________________________________________________________
930 Allow JDBC to compile with JDK 1.4 (Dave)
931 Add JDBC 3 support (Barry)
932 Allows JDBC to set loglevel by adding ?loglevel=X to the connection
934 Add Driver.info() message that prints out the version number (Barry)
935 Add updateable result sets (Raghu Nidagal, Dave)
936 Add support for callable statements (Paul Bethe)
937 Add query cancel capability
938 Add refresh row (Dave)
939 Fix MD5 encryption handling for multibyte servers (Jun Kawai)
940 Add support for prepared statements (Barry)
941 _________________________________________________________________
943 Miscellaneous Interfaces
945 Fixed ECPG bug concerning octal numbers in single quotes (Michael)
946 Move src/interfaces/libpgeasy to http://gborg.postgresql.org (Marc,
948 Improve Python interface (Elliot Lee, Andrew Johnson, Greg Copeland)
949 Add libpgtcl connection close event (Gerhard Hintermayer)
950 Move src/interfaces/libpq++ to http://gborg.postgresql.org (Marc,
952 Move src/interfaces/odbc to http://gborg.postgresql.org (Marc)
953 Move src/interfaces/libpgeasy to http://gborg.postgresql.org (Marc,
955 Move src/interfaces/perl5 to http://gborg.postgresql.org (Marc,
957 Remove src/bin/pgaccess from main tree, now at
958 http://www.pgaccess.org (Bruce)
959 Add pg_on_connection_loss command to libpgtcl (Gerhard Hintermayer,
961 _________________________________________________________________
965 Fix for parallel make (Peter)
966 AIX fixes for linking Tcl (Andreas Zeugswetter)
967 Allow PL/Perl to build under Cygwin (Jason Tishler)
968 Improve MIPS compiles (Peter, Oliver Elphick)
969 Require Autoconf version 2.53 (Peter)
970 Require readline and zlib by default in configure (Peter)
971 Allow Solaris to use Intimate Shared Memory (ISM), for performance
972 (Scott Brunza, P.J. Josh Rovero)
973 Always enable syslog in compile, remove --enable-syslog option
975 Always enable multibyte in compile, remove --enable-multibyte option
977 Always enable locale in compile, remove --enable-locale option
979 Fix for Win9x DLL creation (Magnus Naeslund)
980 Fix for link() usage by WAL code on Win32, BeOS (Jason Tishler)
981 Add sys/types.h to c.h, remove from main files (Peter, Bruce)
982 Fix AIX hang on SMP machines (Tomoyuki Niijima)
983 AIX SMP hang fix (Tomoyuki Niijima)
984 Fix pre-1970 date handling on newer glibc libraries (Tom)
985 Fix PowerPC SMP locking (Tom)
986 Prevent gcc -ffast-math from being used (Peter, Tom)
987 Bison >= 1.50 now required for developer builds
988 Kerberos 5 support now builds with Heimdal (Peter)
989 Add appendix in the User's Guide which lists SQL features (Thomas)
990 Improve loadable module linking to use RTLD_NOW (Tom)
991 New error levels WARNING, INFO, LOG, DEBUG[1-5] (Bruce)
992 New src/port directory holds replaced libc functions (Peter, Bruce)
993 New pg_namespace system catalog for schemas (Tom)
994 Add pg_class.relnamespace for schemas (Tom)
995 Add pg_type.typnamespace for schemas (Tom)
996 Add pg_proc.pronamespace for schemas (Tom)
997 Restructure aggregates to have pg_proc entries (Tom)
998 System relations now have their own namespace, pg_* test not required
1000 Rename TOAST index names to be *_index rather than *_idx (Neil)
1001 Add namespaces for operators, opclasses (Tom)
1002 Add additional checks to server control file (Thomas)
1003 New Polish FAQ (Marcin Mazurek)
1004 Add Posix semaphore support (Tom)
1005 Document need for reindex (Bruce)
1006 Rename some internal identifiers to simplify Win32 compile (Jan,
1008 Add documentation on computing disk space (Bruce)
1009 Remove KSQO from GUC (Bruce)
1010 Fix memory leak in rtree (Kenneth Been)
1011 Modify a few error messages for consistency (Bruce)
1012 Remove unused system table columns (Peter)
1013 Make system columns NOT NULL where appropriate (Tom)
1014 Clean up use of sprintf in favor of snprintf() (Neil, Jukka Holappa)
1015 Remove OPAQUE and create specific subtypes (Tom)
1016 Cleanups in array internal handling (Joe, Tom)
1017 Disallow pg_atoi('') (Bruce)
1018 Remove parameter wal_files because WAL files are now recycled (Bruce)
1019 Add version numbers to heap pages (Tom)
1020 _________________________________________________________________
1024 Allow inet arrays in /contrib/array (Neil)
1025 Gist fixes (Teodor Sigaev, Neil)
1026 Upgrade /contrib/mysql
1027 Add /contrib/dbsize which shows table sizes without vacuum (Peter)
1028 Add /contrib/intagg, integer aggregator routines (mlw)
1029 Improve /contrib/oid2name (Neil, Bruce)
1030 Improve /contrib/tsearch (Oleg, Teodor Sigaev)
1031 Cleanups of /contrib/rserver (Alexey V. Borzov)
1032 Update /contrib/oracle conversion utility (Gilles Darold)
1033 Update /contrib/dblink (Joe)
1034 Improve options supported by /contrib/vacuumlo (Mario Weilguni)
1035 Improvements to /contrib/intarray (Oleg, Teodor Sigaev, Andrey
1037 Add /contrib/reindexdb utility (Shaun Thomas)
1038 Add indexing to /contrib/isbn_issn (Dan Weston)
1039 Add /contrib/dbmirror (Steven Singer)
1040 Improve /contrib/pgbench (Neil)
1041 Add /contrib/tablefunc table function examples (Joe)
1042 Add /contrib/ltree data type for tree structures (Teodor Sigaev,
1044 Move /contrib/pg_controldata, pg_resetxlog into main tree (Bruce)
1045 Fixes to /contrib/cube (Bruno Wolff)
1046 Improve /contrib/fulltextindex (Christopher)
1047 _________________________________________________________________
1051 Release date: 2003-01-30
1053 This has a variety of fixes from 7.2.3, including fixes to prevent
1055 _________________________________________________________________
1057 Migration to version 7.2.4
1059 A dump/restore is *not* required for those running 7.2.X.
1060 _________________________________________________________________
1064 Fix some additional cases of VACUUM "No one parent tuple was found"
1066 Prevent VACUUM from being called inside a function (Bruce)
1067 Ensure pg_clog updates are sync'd to disk before marking checkpoint
1069 Avoid integer overflow during large hash joins
1070 Make GROUP commands work when pg_group.grolist is large enough
1072 Fix errors in datetime tables; some timezone names weren't being
1074 Fix integer overflows in circle_poly(), path_encode(), path_add()
1076 Repair long-standing logic errors in lseg_eq(), lseg_ne(), lseg_center()
1077 _________________________________________________________________
1081 Release date: 2002-10-01
1083 This has a variety of fixes from 7.2.2, including fixes to prevent
1085 _________________________________________________________________
1087 Migration to version 7.2.3
1089 A dump/restore is *not* required for those running 7.2.X.
1090 _________________________________________________________________
1094 Prevent possible compressed transaction log loss (Tom)
1095 Prevent non-superuser from increasing most recent vacuum info (Tom)
1096 Handle pre-1970 date values in newer versions of glibc (Tom)
1097 Fix possible hang during server shutdown
1098 Prevent spinlock hangs on SMP PPC machines (Tomoyuki Niijima)
1099 Fix pg_dump to properly dump FULL JOIN USING (Tom)
1100 _________________________________________________________________
1104 Release date: 2002-08-23
1106 This has a variety of fixes from 7.2.1.
1107 _________________________________________________________________
1109 Migration to version 7.2.2
1111 A dump/restore is *not* required for those running 7.2.X.
1112 _________________________________________________________________
1116 Allow EXECUTE of "CREATE TABLE AS ... SELECT" in PL/pgSQL (Tom)
1117 Fix for compressed transaction log id wraparound (Tom)
1118 Fix PQescapeBytea/PQunescapeBytea so that they handle bytes > 0x7f (Ta
1120 Fix for psql and pg_dump crashing when invoked with non-existand long
1122 Fix crash when invoking geometric operators (Tom)
1123 Allow OPEN cursor(args) (Tom)
1124 Fix for rtree_gist index build (Teodor)
1125 Fix for dumping user-defined aggregates (Tom)
1126 Contrib/intarray fixes (Oleg)
1127 Fix for complex UNION/EXCEPT/INTERSECT queries using parens (Tom)
1128 Fix to pg_convert (Tatsuo)
1129 Fix for crash with long DATA strings (Thomes, Neil)
1130 Fix for repeat(), lpad(), rpad() and long strings (Neil)
1131 _________________________________________________________________
1135 Release date: 2002-03-21
1137 This has a variety of fixes from 7.2.
1138 _________________________________________________________________
1140 Migration to version 7.2.1
1142 A dump/restore is *not* required for those running 7.2.
1143 _________________________________________________________________
1147 Ensure that sequence counters do not go backwards after a crash (Tom)
1148 Fix pgaccess kanji-coversion key binding (Tatsuo)
1149 Optimizer improvements (Tom)
1150 Cash I/O improvements (Tom)
1152 Compile fix for missing AuthBlockSig (Heiko)
1153 Additional time zones and time zone fixes (Thomas)
1154 Allow psql \connect to handle mixed case database and user names (Tom)
1155 Return proper OID on command completion even with ON INSERT rules (Tom
1157 Allow COPY FROM to use 8-bit DELIMITERS (Tatsuo)
1158 Fix bug in extract/date_part for milliseconds/microseconds (Tatsuo)
1159 Improve handling of multiple UNIONs with different lengths (Tom)
1160 contrib/btree_gist improvements (Teodor Sigaev)
1161 contrib/tsearch dictionary improvements, see README.tsearch for
1162 an additional installation step (Thomas T. Thai, Teodor Sigaev)
1163 Fix for array subscripts handling (Tom)
1164 Allow EXECUTE of "CREATE TABLE AS ... SELECT" in PL/pgSQL (Tom)
1165 _________________________________________________________________
1169 Release date: 2002-02-04
1170 _________________________________________________________________
1174 This release improves PostgreSQL for use in high-volume applications.
1176 Major changes in this release:
1179 Vacuuming no longer locks tables, thus allowing normal user
1180 access during the vacuum. A new "VACUUM FULL" command does
1181 old-style vacuum by locking the table and shrinking the on-disk
1185 There is no longer a problem with installations that exceed
1186 four billion transactions.
1189 OIDs are now optional. Users can now create tables without OIDs
1190 for cases where OID usage is excessive.
1193 The system now computes histogram column statistics during
1194 "ANALYZE", allowing much better optimizer choices.
1197 A new MD5 encryption option allows more secure storage and
1198 transfer of passwords. A new Unix-domain socket authentication
1199 option is available on Linux and BSD systems.
1202 Administrators can use the new table access statistics module
1203 to get fine-grained information about table and index usage.
1205 Internationalization
1206 Program and library messages can now be displayed in several
1208 _________________________________________________________________
1210 Migration to version 7.2
1212 A dump/restore using "pg_dump" is required for those wishing to
1213 migrate data from any previous release.
1215 Observe the following incompatibilities:
1217 * The semantics of the "VACUUM" command have changed in this
1218 release. You may wish to update your maintenance procedures
1220 * In this release, comparisons using = NULL will always return false
1221 (or NULL, more precisely). Previous releases automatically
1222 transformed this syntax to IS NULL. The old behavior can be
1223 re-enabled using a "postgresql.conf" parameter.
1224 * The "pg_hba.conf" and "pg_ident.conf" configuration is now only
1225 reloaded after receiving a SIGHUP signal, not with each
1227 * The function "octet_length()" now returns the uncompressed data
1229 * The date/time value 'current' is no longer available. You will
1230 need to rewrite your applications.
1231 * The timestamp(), time(), and interval() functions are no longer
1232 available. Instead of timestamp(), use timestamp 'string' or CAST.
1234 The SELECT ... LIMIT #,# syntax will be removed in the next release.
1235 You should change your queries to use separate LIMIT and OFFSET
1236 clauses, e.g. LIMIT 10 OFFSET 20.
1237 _________________________________________________________________
1243 Create temporary files in a separate directory (Bruce)
1244 Delete orphaned temporary files on postmaster startup (Bruce)
1245 Added unique indexes to some system tables (Tom)
1246 System table operator reorganization (Oleg Bartunov, Teodor Sigaev, To
1248 Renamed pg_log to pg_clog (Tom)
1249 Enable SIGTERM, SIGQUIT to kill backends (Jan)
1250 Removed compile-time limit on number of backends (Tom)
1251 Better cleanup for semaphore resource failure (Tatsuo, Tom)
1252 Allow safe transaction ID wraparound (Tom)
1253 Removed OIDs from some system tables (Tom)
1254 Removed "triggered data change violation" error check (Tom)
1255 SPI portal creation of prepared/saved plans (Jan)
1256 Allow SPI column functions to work for system columns (Tom)
1257 Long value compression improvement (Tom)
1258 Statistics collector for table, index access (Jan)
1259 Truncate extra-long sequence names to a reasonable value (Tom)
1260 Measure transaction times in milliseconds (Thomas)
1261 Fix TID sequential scans (Hiroshi)
1262 Superuser ID now fixed at 1 (Peter E)
1263 New pg_ctl "reload" option (Tom)
1264 _________________________________________________________________
1268 Optimizer improvements (Tom)
1269 New histogram column statistics for optimizer (Tom)
1270 Reuse write-ahead log files rather than discarding them (Tom)
1271 Cache improvements (Tom)
1272 IS NULL, IS NOT NULL optimizer improvement (Tom)
1273 Improve lock manager to reduce lock contention (Tom)
1274 Keep relcache entries for index access support functions (Tom)
1275 Allow better selectivity with NaN and infinities in NUMERIC (Tom)
1276 R-tree performance improvements (Kenneth Been)
1277 B-tree splits more efficient (Tom)
1278 _________________________________________________________________
1282 Change UPDATE, DELETE permissions to be distinct (Peter E)
1283 New REFERENCES, TRIGGER privileges (Peter E)
1284 Allow GRANT/REVOKE to/from more than one user at a time (Peter E)
1285 New has_table_privilege() function (Joe Conway)
1286 Allow non-superuser to vacuum database (Tom)
1287 New SET SESSION AUTHORIZATION command (Peter E)
1288 Fix bug in privilege modifications on newly created tables (Tom)
1289 Disallow access to pg_statistic for non-superuser, add user-accessible
1291 _________________________________________________________________
1293 Client Authentication
1295 Fork postmaster before doing authentication to prevent hangs (Peter E)
1296 Add ident authentication over Unix domain sockets on Linux, *BSD (Helg
1297 e Bahmann, Oliver Elphick, Teodor Sigaev, Bruce)
1298 Add a password authentication method that uses MD5 encryption (Bruce)
1299 Allow encryption of stored passwords using MD5 (Bruce)
1300 PAM authentication (Dominic J. Eidson)
1301 Load pg_hba.conf and pg_ident.conf only on startup and SIGHUP (Bruce)
1302 _________________________________________________________________
1304 Server Configuration
1306 Interpretation of some time zone abbreviations as Australian rather th
1307 an North American now settable at run time (Bruce)
1308 New parameter to set default transaction isolation level (Peter E)
1309 New parameter to enable conversion of "expr = NULL" into "expr IS NULL
1310 ", off by default (Peter E)
1311 New parameter to control memory usage by VACUUM (Tom)
1312 New parameter to set client authentication timeout (Tom)
1313 New parameter to set maximum number of open files (Tom)
1314 _________________________________________________________________
1318 Statements added by INSERT rules now execute after the INSERT (Jan)
1319 Prevent unadorned relation names in target list (Bruce)
1320 NULLs now sort after all normal values in ORDER BY (Tom)
1321 New IS UNKNOWN, IS NOT UNKNOWN Boolean tests (Tom)
1322 New SHARE UPDATE EXCLUSIVE lock mode (Tom)
1323 New EXPLAIN ANALYZE command that shows run times and row counts (Marti
1325 Fix problem with LIMIT and subqueries (Tom)
1326 Fix for LIMIT, DISTINCT ON pushed into subqueries (Tom)
1327 Fix nested EXCEPT/INTERSECT (Tom)
1328 _________________________________________________________________
1332 Fix SERIAL in temporary tables (Bruce)
1333 Allow temporary sequences (Bruce)
1334 Sequences now use int8 internally (Tom)
1335 New SERIAL8 creates int8 columns with sequences, default still SERIAL4
1337 Make OIDs optional using WITHOUT OIDS (Tom)
1338 Add %TYPE syntax to CREATE TYPE (Ian Lance Taylor)
1339 Add ALTER TABLE / DROP CONSTRAINT for CHECK constraints (Christopher K
1341 New CREATE OR REPLACE FUNCTION to alter existing function (preserving
1342 the function OID) (Gavin Sherry)
1343 Add ALTER TABLE / ADD [ UNIQUE | PRIMARY ] (Christopher Kings-Lynne)
1344 Allow column renaming in views
1345 Make ALTER TABLE / RENAME COLUMN update column names of indexes (Brent
1347 Fix for ALTER TABLE / ADD CONSTRAINT ... CHECK with inherited tables (
1349 ALTER TABLE RENAME update foreign-key trigger arguments correctly (Bre
1351 DROP AGGREGATE and COMMENT ON AGGREGATE now accept an aggtype (Tom)
1352 Add automatic return type data casting for SQL functions (Tom)
1353 Allow GiST indexes to handle NULLs and multikey indexes (Oleg Bartunov
1354 , Teodor Sigaev, Tom)
1355 Enable partial indexes (Martijn van Oosterhout)
1356 _________________________________________________________________
1360 Add RESET ALL, SHOW ALL (Marko Kreen)
1361 CREATE/ALTER USER/GROUP now allow options in any order (Vince)
1362 Add LOCK A, B, C functionality (Neil Padgett)
1363 New ENCRYPTED/UNENCRYPTED option to CREATE/ALTER USER (Bruce)
1364 New light-weight VACUUM does not lock table; old semantics are availab
1365 le as VACUUM FULL (Tom)
1366 Disable COPY TO/FROM on views (Bruce)
1367 COPY DELIMITERS string must be exactly one character (Tom)
1368 VACUUM warning about index tuples fewer than heap now only appears whe
1369 n appropriate (Martijn van Oosterhout)
1370 Fix permission checks for CREATE INDEX (Tom)
1371 Disallow inappropriate use of CREATE/DROP INDEX/TRIGGER/VIEW (Tom)
1372 _________________________________________________________________
1374 Data Types and Functions
1376 SUM(), AVG(), COUNT() now uses int8 internally for speed (Tom)
1377 Add convert(), convert2() (Tatsuo)
1378 New function bit_length() (Peter E)
1379 Make the "n" in CHAR(n)/VARCHAR(n) represents letters, not bytes (Tats
1381 CHAR(), VARCHAR() now reject strings that are too long (Peter E)
1382 BIT VARYING now rejects bit strings that are too long (Peter E)
1383 BIT now rejects bit strings that do not match declared size (Peter E)
1384 INET, CIDR text conversion functions (Alex Pilosov)
1385 INET, CIDR operators << and <<= indexable (Alex Pilosov)
1386 Bytea \### now requires valid three digit octal number
1387 Bytea comparison improvements, now supports =, <>, >, >=, <, and <=
1388 Bytea now supports B-tree indexes
1389 Bytea now supports LIKE, LIKE...ESCAPE, NOT LIKE, NOT LIKE...ESCAPE
1390 Bytea now supports concatenation
1391 New bytea functions: position, substring, trim, btrim, and length
1392 New encode() function mode, "escaped", converts minimally escaped byte
1394 Add pg_database_encoding_max_length() (Tatsuo)
1395 Add pg_client_encoding() function (Tatsuo)
1396 now() returns time with millisecond precision (Thomas)
1397 New TIMESTAMP WITHOUT TIMEZONE data type (Thomas)
1398 Add ISO date/time specification with "T", yyyy-mm-ddThh:mm:ss (Thomas)
1399 New xid/int comparison functions (Hiroshi)
1400 Add precision to TIME, TIMESTAMP, and INVERVAL data types (Thomas)
1401 Modify type coercion logic to attempt binary-compatible functions firs
1403 New encode() function installed by default (Marko Kreen)
1404 Improved to_*() conversion functions (Karel Zak)
1405 Optimize LIKE/ILIKE when using single-byte encodings (Tatsuo)
1406 New functions in contrib/pgcrypto: crypt(), hmac(), encrypt(), gen_sal
1408 Correct description of translate() function (Bruce)
1409 Add INTERVAL argument for SET TIME ZONE (Thomas)
1410 Add INTERVAL YEAR TO MONTH (etc.) syntax (Thomas)
1411 Optimize length functions when using single-byte encodings (Tatsuo)
1412 Fix path_inter, path_distance, path_length, dist_ppath to handle close
1413 d paths (Curtis Barrett, Tom)
1414 octet_length(text) now returns non-compressed length (Tatsuo, Bruce)
1415 Handle "July" full name in date/time literals (Greg Sabino Mullane)
1416 Some datatype() function calls now evaluated differently
1417 Add support for Julian and ISO time specifications (Thomas)
1418 _________________________________________________________________
1420 Internationalization
1422 National language support in psql, pg_dump, libpq, and server (Peter E
1424 Message translations in Chinese (simplified, traditional), Czech, Fren
1425 ch, German, Hungarian, Russian, Swedish (Peter E, Serguei A. Mokhov, K
1426 arel Zak, Weiping He, Zhenbang Wei, Kovacs Zoltan)
1427 Make trim, ltrim, rtrim, btrim, lpad, rpad, translate multibyte aware
1429 Add LATIN5,6,7,8,9,10 support (Tatsuo)
1430 Add ISO 8859-5,6,7,8 support (Tatsuo)
1431 Correct LATIN5 to mean ISO-8859-9, not ISO-8859-5 (Tatsuo)
1432 Make mic2ascii() non-ASCII aware (Tatsuo)
1433 Reject invalid multibyte character sequences (Tatsuo)
1434 _________________________________________________________________
1438 Now uses portals for SELECT loops, allowing huge result sets (Jan)
1439 CURSOR and REFCURSOR support (Jan)
1440 Can now return open cursors (Jan)
1441 Add ELSEIF (Klaus Reger)
1442 Improve PL/pgSQL error reporting, including location of error (Tom)
1443 Allow IS or FOR key words in cursor declaration, for compatibility (Br
1445 Fix for SELECT ... FOR UPDATE (Tom)
1446 Fix for PERFORM returning multiple rows (Tom)
1447 Make PL/pgSQL use the server's type coercion code (Tom)
1448 Memory leak fix (Jan, Tom)
1449 Make trailing semicolon optional (Tom)
1450 _________________________________________________________________
1454 New untrusted PL/Perl (Alex Pilosov)
1455 PL/Perl is now built on some platforms even if libperl is not shared (
1457 _________________________________________________________________
1461 Now reports errorInfo (Vsevolod Lobko)
1462 Add spi_lastoid function (bob@redivi.com)
1463 _________________________________________________________________
1467 ...is new (Andrew Bosma)
1468 _________________________________________________________________
1472 \d displays indexes in unique, primary groupings (Christopher Kings-Ly
1474 Allow trailing semicolons in backslash commands (Greg Sabino Mullane)
1475 Read password from /dev/tty if possible
1476 Force new password prompt when changing user and database (Tatsuo, Tom
1478 Format the correct number of columns for Unicode (Patrice)
1479 _________________________________________________________________
1483 New function PQescapeString() to escape quotes in command strings (Flo
1485 New function PQescapeBytea() escapes binary strings for use as SQL str
1487 _________________________________________________________________
1491 Return OID of INSERT (Ken K)
1492 Handle more data types (Ken K)
1493 Handle single quotes and newlines in strings (Ken K)
1494 Handle NULL variables (Ken K)
1495 Fix for time zone handling (Barry Lind)
1496 Improved Druid support
1497 Allow eight-bit characters with non-multibyte server (Barry Lind)
1498 Support BIT, BINARY types (Ned Wolpert)
1499 Reduce memory usage (Michael Stephens, Dave Cramer)
1500 Update DatabaseMetaData (Peter E)
1501 Add DatabaseMetaData.getCatalogs() (Peter E)
1502 Encoding fixes (Anders Bengtsson)
1503 Get/setCatalog methods (Jason Davies)
1504 DatabaseMetaData.getColumns() now returns column defaults (Jason Davie
1506 DatabaseMetaData.getColumns() performance improvement (Jeroen van Vian
1508 Some JDBC1 and JDBC2 merging (Anders Bengtsson)
1509 Transaction performance improvements (Barry Lind)
1510 Array fixes (Greg Zoller)
1512 Fix batch processing (Rene Pijlman)
1513 ExecSQL method reorganization (Anders Bengtsson)
1514 GetColumn() fixes (Jeroen van Vianen)
1515 Fix isWriteable() function (Rene Pijlman)
1516 Improved passage of JDBC2 conformance tests (Rene Pijlman)
1517 Add bytea type capability (Barry Lind)
1518 Add isNullable() (Rene Pijlman)
1519 JDBC date/time test suite fixes (Liam Stewart)
1520 Fix for SELECT 'id' AS xxx FROM table (Dave Cramer)
1521 Fix DatabaseMetaData to show precision properly (Mark Lillywhite)
1522 New getImported/getExported keys (Jason Davies)
1523 MD5 password encryption support (Jeremy Wohl)
1524 Fix to actually use type cache (Ned Wolpert)
1525 _________________________________________________________________
1529 Remove query size limit (Hiroshi)
1530 Remove text field size limit (Hiroshi)
1531 Fix for SQLPrimaryKeys in multibyte mode (Hiroshi)
1532 Allow ODBC procedure calls (Hiroshi)
1533 Improve boolean handing (Aidan Mountford)
1534 Most configuration options on setable via DSN (Hiroshi)
1535 Multibyte, performance fixes (Hiroshi)
1536 Allow driver to be used with iODBC or unixODBC (Peter E)
1537 MD5 password encryption support (Bruce)
1538 Add more compatibility functions to odbc.sql (Peter E)
1539 _________________________________________________________________
1543 EXECUTE ... INTO implemented (Christof Petig)
1544 Multiple row descriptor support (e.g. CARDINALITY) (Christof Petig)
1545 Fix for GRANT parameters (Lee Kindness)
1546 Fix INITIALLY DEFERRED bug
1547 Various bug fixes (Michael, Christof Petig)
1548 Auto allocation for indicator variable arrays (int *ind_p=NULL)
1549 Auto allocation for string arrays (char **foo_pp=NULL)
1550 ECPGfree_auto_mem fixed
1551 All function names with external linkage are now prefixed by ECPG
1552 Fixes for arrays of structures (Michael)
1553 _________________________________________________________________
1557 Python fix fetchone() (Gerhard Haring)
1558 Use UTF, Unicode in Tcl where appropriate (Vsevolod Lobko, Reinhard Ma
1560 Add Tcl COPY TO/FROM (ljb)
1561 Prevent output of default index op class in pg_dump (Tom)
1562 Fix libpgeasy memory leak (Bruce)
1563 _________________________________________________________________
1567 Configure, dynamic loader, and shared library fixes (Peter E)
1568 Fixes in QNX 4 port (Bernd Tegge)
1569 Fixes in Cygwin and Win32 ports (Jason Tishler, Gerhard Haring, Dmitry
1570 Yurtaev, Darko Prenosil, Mikhail Terekhov)
1571 Fix for Win32 socket communication failures (Magnus, Mikhail Terekhov)
1572 Hurd compile fix (Oliver Elphick)
1573 BeOS fixes (Cyril Velter)
1574 Remove configure --enable-unicode-conversion, now enabled by multibyte
1576 AIX fixes (Tatsuo, Andreas)
1577 Fix parallel make (Peter E)
1578 Install SQL language manual pages into OS-specific directories (Peter
1580 Rename config.h to pg_config.h (Peter E)
1581 Reorganize installation layout of header files (Peter E)
1582 _________________________________________________________________
1586 Remove SEP_CHAR (Bruce)
1588 Merge GUC and command line handling (Marko Kreen)
1589 Remove EXTEND INDEX (Martijn van Oosterhout, Tom)
1590 New pgjindent utility to indent java code (Bruce)
1591 Remove define of true/false when compiling under C++ (Leandro Fanzone,
1593 pgindent fixes (Bruce, Tom)
1594 Replace strcasecmp() with strcmp() where appropriate (Peter E)
1595 Dynahash portability improvements (Tom)
1596 Add 'volatile' usage in spinlock structures
1597 Improve signal handling logic (Tom)
1598 _________________________________________________________________
1602 New contrib/rtree_gist (Oleg Bartunov, Teodor Sigaev)
1603 New contrib/tsearch full-text indexing (Oleg, Teodor Sigaev)
1604 Add contrib/dblink for remote database access (Joe Conway)
1605 contrib/ora2pg Oracle conversion utility (Gilles Darold)
1606 contrib/xml XML conversion utility (John Gray)
1607 contrib/fulltextindex fixes (Christopher Kings-Lynne)
1608 New contrib/fuzzystrmatch with levenshtein and metaphone, soundex merg
1610 Add contrib/intarray boolean queries, binary search, fixes (Oleg Bartu
1612 New pg_upgrade utility (Bruce)
1613 Add new pg_resetxlog options (Bruce, Tom)
1614 _________________________________________________________________
1618 Release date: 2001-08-15
1619 _________________________________________________________________
1621 Migration to version 7.1.3
1623 A dump/restore is *not* required for those running 7.1.X.
1624 _________________________________________________________________
1628 Remove unused WAL segements of large transactions (Tom)
1629 Multiaction rule fix (Tom)
1630 PL/pgSQL memory allocation fix (Jan)
1631 VACUUM buffer fix (Tom)
1632 Regression test fixes (Tom)
1633 pg_dump fixes for GRANT/REVOKE/comments on views, user-defined types (Tom)
1634 Fix subselects with DISTINCT ON or LIMIT (Tom)
1636 Disable COPY TO/FROM a view (Tom)
1637 Cygwin build (Jason Tishler)
1639 _________________________________________________________________
1643 Release date: 2001-05-11
1645 This has one fix from 7.1.1.
1646 _________________________________________________________________
1648 Migration to version 7.1.2
1650 A dump/restore is *not* required for those running 7.1.X.
1651 _________________________________________________________________
1655 Fix PL/pgSQL SELECTs when returning no rows
1656 Fix for psql backslash core dump
1657 Referential integrity permission fix
1661 _________________________________________________________________
1665 Release date: 2001-05-05
1667 This has a variety of fixes from 7.1.
1668 _________________________________________________________________
1670 Migration to version 7.1.1
1672 A dump/restore is *not* required for those running 7.1.
1673 _________________________________________________________________
1677 Fix for numeric MODULO operator (Tom)
1678 pg_dump fixes (Philip)
1679 pg_dump can dump 7.0 databases (Philip)
1680 readline 4.2 fixes (Peter E)
1682 AIX, MSWIN, VAX, N32K fixes (Tom)
1683 Multibytes fixes (Tom)
1684 Unicode fixes (Tatsuo)
1685 Optimizer improvements (Tom)
1686 Fix for whole tuples in functions (Tom)
1687 Fix for pg_ctl and option strings with spaces (Peter E)
1688 ODBC fixes (Hiroshi)
1689 EXTRACT can now take string argument (Thomas)
1690 Python fixes (Darcy)
1692 _________________________________________________________________
1696 Release date: 2001-04-13
1698 This release focuses on removing limitations that have existed in the
1699 PostgreSQL code for many years.
1701 Major changes in this release:
1703 Write-ahead Log (WAL)
1704 To maintain database consistency in case of an operating system
1705 crash, previous releases of PostgreSQL have forced all data
1706 modifications to disk before each transaction commit. With WAL,
1707 only one log file must be flushed to disk, greatly improving
1708 performance. If you have been using -F in previous releases to
1709 disable disk flushes, you may want to consider discontinuing
1713 TOAST - Previous releases had a compiled-in row length limit,
1714 typically 8k - 32k. This limit made storage of long text fields
1715 difficult. With TOAST, long rows of any length can be stored
1716 with good performance.
1719 We now support outer joins. The UNION/NOT IN workaround for
1720 outer joins is no longer required. We use the SQL92 outer join
1724 The previous C function manager did not handle null values
1725 properly, nor did it support 64-bit CPU's (Alpha). The new
1726 function manager does. You can continue using your old custom
1727 functions, but you may want to rewrite them in the future to
1728 use the new function manager call interface.
1731 A large number of complex queries that were unsupported in
1732 previous releases now work. Many combinations of views,
1733 aggregates, UNION, LIMIT, cursors, subqueries, and inherited
1734 tables now work properly. Inherited tables are now accessed by
1735 default. Subqueries in FROM are now supported.
1736 _________________________________________________________________
1738 Migration to version 7.1
1740 A dump/restore using pg_dump is required for those wishing to migrate
1741 data from any previous release.
1742 _________________________________________________________________
1748 Many multibyte/Unicode/locale fixes (Tatsuo and others)
1749 More reliable ALTER TABLE RENAME (Tom)
1750 Kerberos V fixes (David Wragg)
1751 Fix for INSERT INTO...SELECT where targetlist has subqueries (Tom)
1752 Prompt username/password on standard error (Bruce)
1753 Large objects inv_read/inv_write fixes (Tom)
1754 Fixes for to_char(), to_date(), to_ascii(), and to_timestamp() (Karel,
1756 Prevent query expressions from leaking memory (Tom)
1757 Allow UPDATE of arrays elements (Tom)
1758 Wake up lock waiters during cancel (Hiroshi)
1759 Fix rare cursor crash when using hash join (Tom)
1760 Fix for DROP TABLE/INDEX in rolled-back transaction (Hiroshi)
1761 Fix psql crash from \l+ if MULTIBYTE enabled (Peter E)
1762 Fix truncation of rule names during CREATE VIEW (Ross Reedstrom)
1763 Fix PL/perl (Alex Kapranoff)
1764 Disallow LOCK on views (Mark Hollomon)
1765 Disallow INSERT/UPDATE/DELETE on views (Mark Hollomon)
1766 Disallow DROP RULE, CREATE INDEX, TRUNCATE on views (Mark Hollomon)
1767 Allow PL/pgSQL accept non-ASCII identifiers (Tatsuo)
1768 Allow views to proper handle GROUP BY, aggregates, DISTINCT (Tom)
1769 Fix rare failure with TRUNCATE command (Tom)
1770 Allow UNION/INTERSECT/EXCEPT to be used with ALL, subqueries, views,
1771 DISTINCT, ORDER BY, SELECT...INTO (Tom)
1772 Fix parser failures during aborted transactions (Tom)
1773 Allow temporary relations to properly clean up indexes (Bruce)
1774 Fix VACUUM problem with moving rows in same page (Tom)
1775 Modify pg_dump to better handle user-defined items in template1 (Philip)
1776 Allow LIMIT in VIEW (Tom)
1777 Require cursor FETCH to honor LIMIT (Tom)
1778 Allow PRIMARY/FOREIGN Key definitions on inherited columns (Stephan)
1779 Allow ORDER BY, LIMIT in sub-selects (Tom)
1780 Allow UNION in CREATE RULE (Tom)
1781 Make ALTER/DROP TABLE rollback-able (Vadim, Tom)
1782 Store initdb collation in pg_control so collation cannot be changed (Tom)
1783 Fix INSERT...SELECT with rules (Tom)
1784 Fix FOR UPDATE inside views and subselects (Tom)
1785 Fix OVERLAPS operators conform to SQL92 spec regarding NULLs (Tom)
1786 Fix lpad() and rpad() to handle length less than input string (Tom)
1787 Fix use of NOTIFY in some rules (Tom)
1788 Overhaul btree code (Tom)
1789 Fix NOT NULL use in Pl/pgSQL variables (Tom)
1790 Overhaul GIST code (Oleg)
1791 Fix CLUSTER to preserve constraints and column default (Tom)
1792 Improved deadlock detection handling (Tom)
1793 Allow multiple SERIAL columns in a table (Tom)
1794 Prevent occasional index corruption (Vadim)
1798 Add OUTER JOINs (Tom)
1799 Function manager overhaul (Tom)
1800 Allow ALTER TABLE RENAME on indexes (Tom)
1801 Improve CLUSTER (Tom)
1802 Improve ps status display for more platforms (Peter E, Marc)
1803 Improve CREATE FUNCTION failure message (Ross)
1804 JDBC improvements (Peter, Travis Bauer, Christopher Cain, William Webber,
1806 Grand Unified Configuration scheme/GUC. Many options can now be set in
1807 data/postgresql.conf, postmaster/postgres flags, or SET commands (Peter E)
1808 Improved handling of file descriptor cache (Tom)
1809 New warning code about auto-created table alias entries (Bruce)
1810 Overhaul initdb process (Tom, Peter E)
1811 Overhaul of inherited tables; inherited tables now accessed by default;
1812 new ONLY keyword prevents it (Chris Bitmead, Tom)
1813 ODBC cleanups/improvements (Nick Gorham, Stephan Szabo, Zoltan Kovacs,
1815 Allow renaming of temp tables (Tom)
1816 Overhaul memory manager contexts (Tom)
1817 pg_dumpall uses CREATE USER or CREATE GROUP rather using COPY (Peter E)
1818 Overhaul pg_dump (Philip Warner)
1819 Allow pg_hba.conf secondary password file to specify only username (Peter E)
1820 Allow TEMPORARY or TEMP keyword when creating temporary tables (Bruce)
1821 New memory leak checker (Karel)
1822 New SET SESSION CHARACTERISTICS (Thomas)
1823 Allow nested block comments (Thomas)
1824 Add WITHOUT TIME ZONE type qualifier (Thomas)
1825 New ALTER TABLE ADD CONSTRAINT (Stephan)
1826 Use NUMERIC accumulators for INTEGER aggregates (Tom)
1827 Overhaul aggregate code (Tom)
1828 New VARIANCE and STDDEV() aggregates
1829 Improve dependency ordering of pg_dump (Philip)
1830 New pg_restore command (Philip)
1831 New pg_dump tar output option (Philip)
1832 New pg_dump of large objects (Philip)
1833 New ESCAPE option to LIKE (Thomas)
1834 New case-insensitive LIKE - ILIKE (Thomas)
1835 Allow functional indexes to use binary-compatible type (Tom)
1836 Allow SQL functions to be used in more contexts (Tom)
1837 New pg_config utility (Peter E)
1838 New PL/pgSQL EXECUTE command which allows dynamic SQL and utility statements
1840 New PL/pgSQL GET DIAGNOSTICS statement for SPI value access (Jan)
1841 New quote_identifiers() and quote_literal() functions (Jan)
1842 New ALTER TABLE table OWNER TO user command (Mark Hollomon)
1843 Allow subselects in FROM, i.e. FROM (SELECT ...) [AS] alias (Tom)
1844 Update PyGreSQL to version 3.1 (D'Arcy)
1845 Store tables as files named by OID (Vadim)
1846 New SQL function setval(seq,val,bool) for use in pg_dump (Philip)
1847 Require DROP VIEW to remove views, no DROP TABLE (Mark)
1848 Allow DROP VIEW view1, view2 (Mark)
1849 Allow multiple objects in DROP INDEX, DROP RULE, and DROP TYPE (Tom)
1850 Allow automatic conversion to/from Unicode (Tatsuo, Eiji)
1851 New /contrib/pgcrypto hashing functions (Marko Kreen)
1852 New pg_dumpall --globals-only option (Peter E)
1853 New CHECKPOINT command for WAL which creates new WAL log file (Vadim)
1854 New AT TIME ZONE syntax (Thomas)
1855 Allow location of Unix domain socket to be configurable (David J. MacKenzie)
1856 Allow postmaster to listen on a specific IP address (David J. MacKenzie)
1857 Allow socket path name to be specified in hostname by using leading slash
1858 (David J. MacKenzie)
1859 Allow CREATE DATABASE to specify template database (Tom)
1860 New utility to convert MySQL schema dumps to SQL92 and PostgreSQL (Thomas)
1861 New /contrib/rserv replication toolkit (Vadim)
1862 New file format for COPY BINARY (Tom)
1863 New /contrib/oid2name to map numeric files to table names (B Palmer)
1864 New "idle in transaction" ps status message (Marc)
1865 Update to pgaccess 0.98.7 (Constantin Teodorescu)
1866 pg_ctl now defaults to -w (wait) on shutdown, new -l (log) option
1867 Add rudimentary dependency checking to pg_dump (Philip)
1871 Fix INET/CIDR type ordering and add new functions (Tom)
1872 Make OID behave as an unsigned type (Tom)
1873 Allow BIGINT as synonym for INT8 (Peter E)
1874 New int2 and int8 comparison operators (Tom)
1875 New BIT and BIT VARYING types (Adriaan Joubert, Tom, Peter E)
1876 CHAR() no longer faster than VARCHAR() because of TOAST (Tom)
1877 New GIST seg/cube examples (Gene Selkov)
1878 Improved round(numeric) handling (Tom)
1879 Fix CIDR output formatting (Tom)
1880 New CIDR abbrev() function (Tom)
1884 Write-Ahead Log (WAL) to provide crash recovery with less performance
1886 ANALYZE stage of VACUUM no longer exclusively locks table (Bruce)
1887 Reduced file seeks (Denis Perchine)
1888 Improve BTREE code for duplicate keys (Tom)
1889 Store all large objects in a single table (Denis Perchine, Tom)
1890 Improve memory allocation performance (Karel, Tom)
1894 New function manager call conventions (Tom)
1895 SGI portability fixes (David Kaelbling)
1896 New configure --enable-syslog option (Peter E)
1897 New BSDI README (Bruce)
1898 configure script moved to top level, not /src (Peter E)
1899 Makefile/configuration/compilation overhaul (Peter E)
1900 New configure --with-python option (Peter E)
1901 Solaris cleanups (Peter E)
1902 Overhaul /contrib Makefiles (Karel)
1903 New OpenSSL configuration option (Magnus, Peter E)
1905 QNX fixes (Maurizio)
1906 New heap_open(), heap_openr() API (Tom)
1907 Remove colon and semi-colon operators (Thomas)
1908 New pg_class.relkind value for views (Mark Hollomon)
1909 Rename ichar() to chr() (Karel)
1910 New documentation for btrim(), ascii(), chr(), repeat() (Karel)
1911 Fixes for NT/Cygwin (Pete Forman)
1912 AIX port fixes (Andreas)
1913 New BeOS port (David Reid, Cyril Velter)
1914 Add proofreader's changes to docs (Addison-Wesley, Bruce)
1915 New Alpha spinlock code (Adriaan Joubert, Compaq)
1916 UnixWare port overhaul (Peter E)
1917 New Darwin/MacOS X port (Peter Bierman, Bruce Hartzler)
1918 New FreeBSD Alpha port (Alfred)
1919 Overhaul shared memory segments (Tom)
1920 Add IBM S/390 support (Neale Ferguson)
1921 Moved macmanuf to /contrib (Larry Rosenman)
1922 Syslog improvements (Larry Rosenman)
1923 New template0 database that contains no user additions (Tom)
1924 New /contrib/cube and /contrib/seg GIST sample code (Gene Selkov)
1925 Allow NetBSD's libedit instead of readline (Peter)
1926 Improved assembly language source code format (Bruce)
1927 New contrib/pg_logger
1928 New --template option to createdb
1929 New contrib/pg_control utility (Oliver)
1930 New FreeBSD tools ipc_check, start-scripts/freebsd
1932 _________________________________________________________________
1936 Release date: 2000-11-11
1938 This has a variety of fixes from 7.0.2.
1939 _________________________________________________________________
1941 Migration to version 7.0.3
1943 A dump/restore is *not* required for those running 7.0.*.
1944 _________________________________________________________________
1949 Large object fix (Tom)
1950 Fix lean in COPY WITH OIDS leak (Tom)
1951 Fix backwards-index-scan (Tom)
1952 Fix SELECT ... FOR UPDATE so it checks for duplicate keys (Hiroshi)
1953 Add --enable-syslog to configure (Marc)
1954 Fix abort transaction at backend exit in rare cases (Tom)
1955 Fix for psql \l+ when multibyte enabled (Tatsuo)
1956 Allow PL/pgSQL to accept non ascii identifiers (Tatsuo)
1957 Make vacuum always flush buffers (Tom)
1958 Fix to allow cancel while waiting for a lock (Hiroshi)
1959 Fix for memory aloocation problem in user authentication code (Tom)
1960 Remove bogus use of int4out() (Tom)
1961 Fixes for multiple subqueries in COALESCE or BETWEEN (Tom)
1962 Fix for failure of triggers on heap open in certain cases (Jeroen van
1964 Fix for erroneous selectivity of not-equals (Tom)
1965 Fix for erroneous use of strcmp() (Tom)
1966 Fix for bug where storage manager accesses items beyond end of file
1968 Fix to include kernel errno message in all smgr elog messages (Tom)
1969 Fix for '.' not in PATH at build time (SL Baur)
1970 Fix for out-of-file-descriptors error (Tom)
1971 Fix to make pg_dump dump 'iscachable' flag for functions (Tom)
1972 Fix for subselect in targetlist of Append node (Tom)
1973 Fix for mergejoin plans (Tom)
1974 Fix TRUNCATE failure on relations with indexes (Tom)
1975 Avoid database-wide restart on write error (Hiroshi)
1976 Fix nodeMaterial to honor chgParam by recomputing its output (Tom)
1977 Fix VACUUM problem with moving chain of update tuples when source and
1978 destination of a tuple lie on the same page (Tom)
1979 Fix user.c CommandCounterIncrement (Tom)
1980 Fix for AM/PM boundary problem in to_char() (Karel Zak)
1981 Fix TIME aggregate handling (Tom)
1982 Fix to_char() to avoid coredump on NULL input (Tom)
1984 Fix for inserting/copying longer multibyte strings into char() data
1986 Fix for crash of backend, on abort (Tom)
1988 _________________________________________________________________
1992 Release date: 2000-06-05
1994 This is a repackaging of 7.0.1 with added documentation.
1995 _________________________________________________________________
1997 Migration to version 7.0.2
1999 A dump/restore is *not* required for those running 7.*.
2000 _________________________________________________________________
2004 Added documentation to tarball.
2006 _________________________________________________________________
2010 Release date: 2000-06-01
2012 This is a cleanup release for 7.0.
2013 _________________________________________________________________
2015 Migration to version 7.0.1
2017 A dump/restore is *not* required for those running 7.0.
2018 _________________________________________________________________
2022 Fix many CLUSTER failures (Tom)
2023 Allow ALTER TABLE RENAME works on indexes (Tom)
2024 Fix plpgsql to handle datetime->timestamp and timespan->interval (Bruce)
2025 New configure --with-setproctitle switch to use setproctitle() (Marc, Bruce)
2026 Fix the off by one errors in ResultSet from 6.5.3, and more.
2027 jdbc ResultSet fixes (Joseph Shraibman)
2028 optimizer tunings (Tom)
2029 Fix create user for pgaccess
2030 Fix for UNLISTEN failure
2031 IRIX fixes (David Kaelbling)
2032 QNX fixes (Andreas Kardos)
2033 Reduce COPY IN lock level (Tom)
2034 Change libpqeasy to use PQconnectdb() style parameters (Bruce)
2035 Fix pg_dump to handle OID indexes (Tom)
2036 Fix small memory leak (Tom)
2037 Solaris fix for createdb/dropdb (Tatsuo)
2038 Fix for non-blocking connections (Alfred Perlstein)
2039 Fix improper recovery after RENAME TABLE failures (Tom)
2040 Copy pg_ident.conf.sample into /lib directory in install (Bruce)
2041 Add SJIS UDC (NEC selection IBM kanji) support (Eiji Tokuya)
2042 Fix too long syslog message (Tatsuo)
2043 Fix problem with quoted indexes that are too long (Tom)
2044 JDBC ResultSet.getTimestamp() fix (Gregory Krasnow & Floyd Marinescu)
2045 ecpg changes (Michael)
2047 _________________________________________________________________
2051 Release date: 2000-05-08
2053 This release contains improvements in many areas, demonstrating the
2054 continued growth of PostgreSQL. There are more improvements and fixes
2055 in 7.0 than in any previous release. The developers have confidence
2056 that this is the best release yet; we do our best to put out only
2057 solid releases, and this one is no exception.
2059 Major changes in this release:
2062 Foreign keys are now implemented, with the exception of PARTIAL
2063 MATCH foreign keys. Many users have been asking for this
2064 feature, and we are pleased to offer it.
2067 Continuing on work started a year ago, the optimizer has been
2068 improved, allowing better query plan selection and faster
2069 performance with less memory usage.
2072 psql, our interactive terminal monitor, has been updated with a
2073 variety of new features. See the psql manual page for details.
2076 SQL92 join syntax is now supported, though only as INNER JOIN
2077 for this release. JOIN, NATURAL JOIN, JOIN/USING, and JOIN/ON
2078 are available, as are column correlation names.
2079 _________________________________________________________________
2081 Migration to version 7.0
2083 A dump/restore using pg_dump is required for those wishing to migrate
2084 data from any previous release of PostgreSQL. For those upgrading from
2085 6.5.*, you may instead use pg_upgrade to upgrade to this release;
2086 however, a full dump/reload installation is always the most robust
2087 method for upgrades.
2089 Interface and compatibility issues to consider for the new release
2092 * The date/time types datetime and timespan have been superseded by
2093 the SQL92-defined types timestamp and interval. Although there has
2094 been some effort to ease the transition by allowing PostgreSQL to
2095 recognize the deprecated type names and translate them to the new
2096 type names, this mechanism may not be completely transparent to
2097 your existing application.
2098 * The optimizer has been substantially improved in the area of query
2099 cost estimation. In some cases, this will result in decreased
2100 query times as the optimizer makes a better choice for the
2101 preferred plan. However, in a small number of cases, usually
2102 involving pathological distributions of data, your query times may
2103 go up. If you are dealing with large amounts of data, you may want
2104 to check your queries to verify performance.
2105 * The JDBC and ODBC interfaces have been upgraded and extended.
2106 * The string function CHAR_LENGTH is now a native function. Previous
2107 versions translated this into a call to LENGTH, which could result
2108 in ambiguity with other types implementing LENGTH such as the
2110 _________________________________________________________________
2116 Prevent function calls exceeding maximum number of arguments (Tom)
2117 Improve CASE construct (Tom)
2118 Fix SELECT coalesce(f1,0) FROM int4_tbl GROUP BY f1 (Tom)
2119 Fix SELECT sentence.words[0] FROM sentence GROUP BY sentence.words[0] (Tom)
2120 Fix GROUP BY scan bug (Tom)
2121 Improvements in SQL grammar processing (Tom)
2122 Fix for views involved in INSERT ... SELECT ... (Tom)
2123 Fix for SELECT a/2, a/2 FROM test_missing_target GROUP BY a/2 (Tom)
2124 Fix for subselects in INSERT ... SELECT (Tom)
2125 Prevent INSERT ... SELECT ... ORDER BY (Tom)
2126 Fixes for relations greater than 2GB, including vacuum
2127 Improve propagating system table changes to other backends (Tom)
2128 Improve propagating user table changes to other backends (Tom)
2129 Fix handling of temp tables in complex situations (Bruce, Tom)
2130 Allow table locking at table open, improving concurrent reliability (Tom)
2131 Properly quote sequence names in pg_dump (Ross J. Reedstrom)
2132 Prevent DROP DATABASE while others accessing
2133 Prevent any rows from being returned by GROUP BY if no rows processed (Tom)
2134 Fix SELECT COUNT(1) FROM table WHERE ...' if no rows matching WHERE (Tom)
2135 Fix pg_upgrade so it works for MVCC (Tom)
2136 Fix for SELECT ... WHERE x IN (SELECT ... HAVING SUM(x) > 1) (Tom)
2137 Fix for "f1 datetime DEFAULT 'now'" (Tom)
2138 Fix problems with CURRENT_DATE used in DEFAULT (Tom)
2139 Allow comment-only lines, and ;;; lines too. (Tom)
2140 Improve recovery after failed disk writes, disk full (Hiroshi)
2141 Fix cases where table is mentioned in FROM but not joined (Tom)
2142 Allow HAVING clause without aggregate functions (Tom)
2143 Fix for "--" comment and no trailing newline, as seen in perl interface
2144 Improve pg_dump failure error reports (Bruce)
2145 Allow sorts and hashes to exceed 2GB file sizes (Tom)
2146 Fix for pg_dump dumping of inherited rules (Tom)
2147 Fix for NULL handling comparisons (Tom)
2148 Fix inconsistent state caused by failed CREATE/DROP commands (Hiroshi)
2149 Fix for dbname with dash
2150 Prevent DROP INDEX from interfering with other backends (Tom)
2151 Fix file descriptor leak in verify_password()
2152 Fix for "Unable to identify an operator =$" problem
2153 Fix ODBC so no segfault if CommLog and Debug enabled (Dirk Niggemann)
2154 Fix for recursive exit call (Massimo)
2155 Fix for extra-long timezones (Jeroen van Vianen)
2156 Make pg_dump preserve primary key information (Peter E)
2157 Prevent databases with single quotes (Peter E)
2158 Prevent DROP DATABASE inside transaction (Peter E)
2159 ecpg memory leak fixes (Stephen Birch)
2160 Fix for SELECT null::text, SELECT int4fac(null) and SELECT 2 + (null) (Tom)
2161 Y2K timestamp fix (Massimo)
2162 Fix for VACUUM 'HEAP_MOVED_IN was not expected' errors (Tom)
2163 Fix for views with tables/columns containing spaces (Tom)
2164 Prevent permissions on indexes (Peter E)
2165 Fix for spinlock stuck problem when error is generated (Hiroshi)
2166 Fix ipcclean on Linux
2167 Fix handling of NULL constraint conditions (Tom)
2168 Fix memory leak in odbc driver (Nick Gorham)
2169 Fix for permission check on UNION tables (Tom)
2170 Fix to allow SELECT 'a' LIKE 'a' (Tom)
2171 Fix for SELECT 1 + NULL (Tom)
2173 Fix log() on numeric type (Tom)
2174 Deprecate ':' and ';' operators
2175 Allow vacuum of temporary tables
2176 Disallow inherited columns with the same name as new columns
2177 Recover or force failure when disk space is exhausted (Hiroshi)
2178 Fix INSERT INTO ... SELECT with AS columns matching result columns
2179 Fix INSERT ... SELECT ... GROUP BY groups by target columns not source columns
2181 Fix CREATE TABLE test (a char(5) DEFAULT text '', b int4) with INSERT (Tom)
2182 Fix UNION with LIMIT
2183 Fix CREATE TABLE x AS SELECT 1 UNION SELECT 2
2184 Fix CREATE TABLE test(col char(2) DEFAULT user)
2185 Fix mismatched types in CREATE TABLE ... DEFAULT
2186 Fix SELECT * FROM pg_class where oid in (0,-1)
2187 Fix SELECT COUNT('asdf') FROM pg_class WHERE oid=12
2188 Prevent user who can create databases can modifying pg_database table (Peter E)
2189 Fix btree to give a useful elog when key > 1/2 (page - overhead) (Tom)
2190 Fix INSERT of 0.0 into DECIMAL(4,4) field (Tom)
2194 New CLI interface include file sqlcli.h, based on SQL3/SQL98
2195 Remove all limits on query length, row length limit still exists (Tom)
2196 Update jdbc protocol to 2.0 (Jens Glaser <jens@jens.de>)
2197 Add TRUNCATE command to quickly truncate relation (Mike Mascari)
2198 Fix to give super user and createdb user proper update catalog rights (Peter E)
2199 Allow ecpg bool variables to have NULL values (Christof)
2200 Issue ecpg error if NULL value for variable with no NULL indicator (Christof)
2201 Allow ^C to cancel COPY command (Massimo)
2202 Add SET FSYNC and SHOW PG_OPTIONS commands(Massimo)
2203 Function name overloading for dynamically-loaded C functions (Frankpitt)
2204 Add CmdTuples() to libpq++(Vince)
2205 New CREATE CONSTRAINT TRIGGER and SET CONSTRAINTS commands(Jan)
2206 Allow CREATE FUNCTION/WITH clause to be used for all language types
2207 configure --enable-debug adds -g (Peter E)
2208 configure --disable-debug removes -g (Peter E)
2209 Allow more complex default expressions (Tom)
2210 First real FOREIGN KEY constraint trigger functionality (Jan)
2211 Add FOREIGN KEY ... MATCH FULL ... ON DELETE CASCADE (Jan)
2212 Add FOREIGN KEY ... MATCH <unspecified> referential actions (Don Baccus)
2213 Allow WHERE restriction on ctid (physical heap location) (Hiroshi)
2214 Move pginterface from contrib to interface directory, rename to pgeasy (Bruce)
2215 Change pgeasy connectdb() parameter ordering (Bruce)
2216 Require SELECT DISTINCT target list to have all ORDER BY columns (Tom)
2217 Add Oracle's COMMENT ON command (Mike Mascari <mascarim@yahoo.com>)
2218 libpq's PQsetNoticeProcessor function now returns previous hook(Peter E)
2219 Prevent PQsetNoticeProcessor from being set to NULL (Peter E)
2220 Make USING in COPY optional (Bruce)
2221 Allow subselects in the target list (Tom)
2222 Allow subselects on the left side of comparison operators (Tom)
2223 New parallel regression test (Jan)
2224 Change backend-side COPY to write files with permissions 644 not 666 (Tom)
2225 Force permissions on PGDATA directory to be secure, even if it exists (Tom)
2226 Added psql LASTOID variable to return last inserted oid (Peter E)
2227 Allow concurrent vacuum and remove pg_vlock vacuum lock file (Tom)
2228 Add permissions check for vacuum (Peter E)
2229 New libpq functions to allow asynchronous connections: PQconnectStart(),
2230 PQconnectPoll(), PQresetStart(), PQresetPoll(), PQsetenvStart(),
2231 PQsetenvPoll(), PQsetenvAbort (Ewan Mellor)
2232 New libpq PQsetenv() function (Ewan Mellor)
2233 create/alter user extension (Peter E)
2234 New postmaster.pid and postmaster.opts under $PGDATA (Tatsuo)
2235 New scripts for create/drop user/db (Peter E)
2236 Major psql overhaul (Peter E)
2237 Add const to libpq interface (Peter E)
2238 New libpq function PQoidValue (Peter E)
2239 Show specific non-aggregate causing problem with GROUP BY (Tom)
2240 Make changes to pg_shadow recreate pg_pwd file (Peter E)
2241 Add aggregate(DISTINCT ...) (Tom)
2242 Allow flag to control COPY input/output of NULLs (Peter E)
2243 Make postgres user have a password by default (Peter E)
2244 Add CREATE/ALTER/DROP GROUP (Peter E)
2245 All administration scripts now support --long options (Peter E, Karel)
2246 Vacuumdb script now supports --all option (Peter E)
2247 ecpg new portable FETCH syntax
2248 Add ecpg EXEC SQL IFDEF, EXEC SQL IFNDEF, EXEC SQL ELSE, EXEC SQL ELIF
2249 and EXEC SQL ENDIF directives
2250 Add pg_ctl script to control backend start-up (Tatsuo)
2251 Add postmaster.opts.default file to store start-up flags (Tatsuo)
2252 Allow --with-mb=SQL_ASCII
2253 Increase maximum number of index keys to 16 (Bruce)
2254 Increase maximum number of function arguments to 16 (Bruce)
2255 Allow configuration of maximum number of index keys and arguments (Bruce)
2256 Allow unprivileged users to change their passwords (Peter E)
2257 Password authentication enabled; required for new users (Peter E)
2258 Disallow dropping a user who owns a database (Peter E)
2259 Change initdb option --with-mb to --enable-multibyte
2260 Add option for initdb to prompts for superuser password (Peter E)
2261 Allow complex type casts like col::numeric(9,2) and col::int2::float8 (Tom)
2262 Updated user interfaces on initdb, initlocation, pg_dump, ipcclean (Peter E)
2263 New pg_char_to_encoding() and pg_encoding_to_char() functions (Tatsuo)
2264 Libpq non-blocking mode (Alfred Perlstein)
2265 Improve conversion of types in casts that don't specify a length
2266 New plperl internal programming language (Mark Hollomon)
2267 Allow COPY IN to read file that do not end with a newline (Tom)
2268 Indicate when long identifiers are truncated (Tom)
2269 Allow aggregates to use type equivalency (Peter E)
2270 Add Oracle's to_char(), to_date(), to_datetime(), to_timestamp(), to_number()
2271 conversion functions (Karel Zak <zakkr@zf.jcu.cz>)
2272 Add SELECT DISTINCT ON (expr [, expr ...]) targetlist ... (Tom)
2273 Check to be sure ORDER BY is compatible with the DISTINCT operation (Tom)
2274 Add NUMERIC and int8 types to ODBC
2275 Improve EXPLAIN results for Append, Group, Agg, Unique (Tom)
2276 Add ALTER TABLE ... ADD FOREIGN KEY (Stephan Szabo)
2277 Allow SELECT .. FOR UPDATE in PL/pgSQL (Hiroshi)
2278 Enable backward sequential scan even after reaching EOF (Hiroshi)
2279 Add btree indexing of boolean values, >= and <= (Don Baccus)
2280 Print current line number when COPY FROM fails (Massimo)
2281 Recognize POSIX time zone e.g. "PST+8" and "GMT-8" (Thomas)
2282 Add DEC as synonym for DECIMAL (Thomas)
2283 Add SESSION_USER as SQL92 keyword, same as CURRENT_USER (Thomas)
2284 Implement SQL92 column aliases (aka correlation names) (Thomas)
2285 Implement SQL92 join syntax (Thomas)
2286 Make INTERVAL reserved word allowed as a column identifier (Thomas)
2287 Implement REINDEX command (Hiroshi)
2288 Accept ALL in aggregate function SUM(ALL col) (Tom)
2289 Prevent GROUP BY from using column aliases (Tom)
2290 New psql \encoding option (Tatsuo)
2291 Allow PQrequestCancel() to terminate when in waiting-for-lock state (Hiroshi)
2292 Allow negation of a negative number in all cases
2293 Add ecpg descriptors (Christof, Michael)
2294 Allow CREATE VIEW v AS SELECT f1::char(8) FROM tbl
2295 Allow casts with length, like foo::char(8)
2296 New libpq functions PQsetClientEncoding(), PQclientEncoding() (Tatsuo)
2297 Add support for SJIS user defined characters (Tatsuo)
2298 Larger views/rules supported
2299 Make libpq's PQconndefaults() thread-safe (Tom)
2300 Disable // as comment to be ANSI conforming, should use -- (Tom)
2301 Allow column aliases on views CREATE VIEW name (collist)
2302 Fixes for views with subqueries (Tom)
2303 Allow UPDATE table SET fld = (SELECT ...) (Tom)
2304 SET command options no longer require quotes
2305 Update pgaccess to 0.98.6
2306 New SET SEED command
2307 New pg_options.sample file
2308 New SET FSYNC command (Massimo)
2309 Allow pg_descriptions when creating tables
2310 Allow pg_descriptions when creating types, columns, and functions
2311 Allow psql \copy to allow delimiters (Peter E)
2312 Allow psql to print nulls as distinct from "" [null] (Peter E)
2316 Many array fixes (Tom)
2317 Allow bare column names to be subscripted as arrays (Tom)
2318 Improve type casting of int and float constants (Tom)
2319 Cleanups for int8 inputs, range checking, and type conversion (Tom)
2320 Fix for SELECT timespan('21:11:26'::time) (Tom)
2321 netmask('x.x.x.x/0') is 255.255.255.255 instead of 0.0.0.0 (Oleg Sharoiko)
2322 Add btree index on NUMERIC (Jan)
2323 Perl fix for large objects containing NUL characters (Douglas Thomson)
2324 ODBC fix for for large objects (free)
2325 Fix indexing of cidr data type
2326 Fix for Ethernet MAC addresses (macaddr type) comparisons
2327 Fix for date/time types when overflows happened in computations (Tom)
2328 Allow array on int8 (Peter E)
2329 Fix for rounding/overflow of NUMERIC type, like NUMERIC(4,4) (Tom)
2330 Allow NUMERIC arrays
2331 Fix bugs in NUMERIC ceil() and floor() functions (Tom)
2332 Make char_length()/octet_length including trailing blanks (Tom)
2333 Made abstime/reltime use int4 instead of time_t (Peter E)
2334 New lztext data type for compressed text fields
2335 Revise code to handle coercion of int and float constants (Tom)
2336 Start at new code to implement a BIT and BIT VARYING type (Adriaan Joubert)
2337 NUMERIC now accepts scientific notation (Tom)
2338 NUMERIC to int4 rounds (Tom)
2339 Convert float4/8 to NUMERIC properly (Tom)
2340 Allow type conversion with NUMERIC (Thomas)
2341 Make ISO date style (2000-02-16 09:33) the default (Thomas)
2342 Add NATIONAL CHAR [ VARYING ] (Thomas)
2343 Allow NUMERIC round and trunc to accept negative scales (Tom)
2344 New TIME WITH TIME ZONE type (Thomas)
2345 Add MAX()/MIN() on time type (Thomas)
2346 Add abs(), mod(), fac() for int8 (Thomas)
2347 Rename functions to round(), sqrt(), cbrt(), pow() for float8 (Thomas)
2348 Add transcendental math functions (e.g. sin(), acos()) for float8 (Thomas)
2349 Add exp() and ln() for NUMERIC type
2350 Rename NUMERIC power() to pow() (Thomas)
2351 Improved TRANSLATE() function (Edwin Ramirez, Tom)
2352 Allow X=-Y operators (Tom)
2353 Allow SELECT float8(COUNT(*))/(SELECT COUNT(*) FROM t) FROM t GROUP BY f1; (Tom
2355 Allow LOCALE to use indexes in regular expression searches (Tom)
2356 Allow creation of functional indexes to use default types
2360 Prevent exponential space consumption with many AND's and OR's (Tom)
2361 Collect attribute selectivity values for system columns (Tom)
2362 Reduce memory usage of aggregates (Tom)
2363 Fix for LIKE optimization to use indexes with multibyte encodings (Tom)
2364 Fix r-tree index optimizer selectivity (Thomas)
2365 Improve optimizer selectivity computations and functions (Tom)
2366 Optimize btree searching for cases where many equal keys exist (Tom)
2367 Enable fast LIKE index processing only if index present (Tom)
2368 Re-use free space on index pages with duplicates (Tom)
2369 Improve hash join processing (Tom)
2370 Prevent descending sort if result is already sorted(Hiroshi)
2371 Allow commuting of index scan query qualifications (Tom)
2372 Prefer index scans in cases where ORDER BY/GROUP BY is required (Tom)
2373 Allocate large memory requests in fix-sized chunks for performance (Tom)
2374 Fix vacuum's performance by reducing memory allocation requests (Tom)
2375 Implement constant-expression simplification (Bernard Frankpitt, Tom)
2376 Use secondary columns to be used to determine start of index scan (Hiroshi)
2377 Prevent quadruple use of disk space when doing internal sorting (Tom)
2378 Faster sorting by calling fewer functions (Tom)
2379 Create system indexes to match all system caches (Bruce, Hiroshi)
2380 Make system caches use system indexes (Bruce)
2381 Make all system indexes unique (Bruce)
2382 Improve pg_statistics management for VACUUM speed improvement (Tom)
2383 Flush backend cache less frequently (Tom, Hiroshi)
2384 COPY now reuses previous memory allocation, improving performance (Tom)
2385 Improve optimization cost estimation (Tom)
2386 Improve optimizer estimate of range queries x > lowbound AND x < highbound (Tom
2388 Use DNF instead of CNF where appropriate (Tom, Taral)
2389 Further cleanup for OR-of-AND WHERE-clauses (Tom)
2390 Make use of index in OR clauses (x = 1 AND y = 2) OR (x = 2 AND y = 4) (Tom)
2391 Smarter optimizer computations for random index page access (Tom)
2392 New SET variable to control optimizer costs (Tom)
2393 Optimizer queries based on LIMIT, OFFSET, and EXISTS qualifications (Tom)
2394 Reduce optimizer internal housekeeping of join paths for speedup (Tom)
2395 Major subquery speedup (Tom)
2396 Fewer fsync writes when fsync is not disabled (Tom)
2397 Improved LIKE optimizer estimates (Tom)
2398 Prevent fsync in SELECT-only queries (Vadim)
2399 Make index creation use psort code, because it is now faster (Tom)
2400 Allow creation of sort temp tables > 1 Gig
2404 Fix for linux PPC compile
2405 New generic expression-tree-walker subroutine (Tom)
2406 Change form() to varargform() to prevent portability problems
2407 Improved range checking for large integers on Alphas
2408 Clean up #include in /include directory (Bruce)
2409 Add scripts for checking includes (Bruce)
2410 Remove un-needed #include's from *.c files (Bruce)
2411 Change #include's to use <> and "" as appropriate (Bruce)
2412 Enable WIN32 compilation of libpq
2413 Alpha spinlock fix from Uncle George <gatgul@voicenet.com>
2414 Overhaul of optimizer data structures (Tom)
2415 Fix to cygipc library (Yutaka Tanida)
2416 Allow pgsql to work on newer Cygwin snapshots (Dan)
2417 New catalog version number (Tom)
2419 Rename heap_replace to heap_update
2420 Update for QNX (Dr. Andreas Kardos)
2421 New platform-specific regression handling (Tom)
2422 Rename oid8 -> oidvector and int28 -> int2vector (Bruce)
2423 Included all yacc and lex files into the distribution (Peter E.)
2424 Remove lextest, no longer needed (Peter E)
2425 Fix for libpq and psql on Win32 (Magnus)
2426 Internally change datetime and timespan into timestamp and interval (Thomas)
2427 Fix for plpgsql on BSD/OS
2428 Add SQL_ASCII test case to the regression test (Tatsuo)
2429 configure --with-mb now deprecated (Tatsuo)
2431 NetBSD fixes (Johnny C. Lam <lamj@stat.cmu.edu>)
2432 Fixes for Alpha compiles
2433 New multibyte encodings
2435 _________________________________________________________________
2439 Release date: 1999-10-13
2441 This is basically a cleanup release for 6.5.2. We have added a new
2442 PgAccess that was missing in 6.5.2, and installed an NT-specific fix.
2443 _________________________________________________________________
2445 Migration to version 6.5.3
2447 A dump/restore is *not* required for those running 6.5.*.
2448 _________________________________________________________________
2452 Updated version of pgaccess 0.98
2454 Fix dumping rules on inherited tables
2456 _________________________________________________________________
2460 Release date: 1999-09-15
2462 This is basically a cleanup release for 6.5.1. We have fixed a variety
2463 of problems reported by 6.5.1 users.
2464 _________________________________________________________________
2466 Migration to version 6.5.2
2468 A dump/restore is *not* required for those running 6.5.*.
2469 _________________________________________________________________
2473 subselect+CASE fixes(Tom)
2474 Add SHLIB_LINK setting for solaris_i386 and solaris_sparc ports(Daren Sefcik)
2475 Fixes for CASE in WHERE join clauses(Tom)
2476 Fix BTScan abort(Tom)
2477 Repair the check for redundant UNIQUE and PRIMARY KEY indexes(Thomas)
2478 Improve it so that it checks for multicolumn constraints(Thomas)
2479 Fix for Win32 making problem with MB enabled(Hiroki Kataoka)
2480 Allow BSD yacc and bison to compile pl code(Bruce)
2481 Fix SET NAMES working
2483 Fix vacuum's memory consumption(Hiroshi,Tatsuo)
2484 Reduce the total memory consumption of vacuum(Tom)
2485 Fix for timestamp(datetime)
2486 Rule deparsing bugfixes(Tom)
2487 Fix quoting problems in mkMakefile.tcldefs.sh.in and mkMakefile.tkdefs.sh.in(To
2489 This is to re-use space on index pages freed by vacuum(Vadim)
2490 document -x for pg_dump(Bruce)
2491 Fix for unary operators in rule deparser(Tom)
2492 Comment out FileUnlink of excess segments during mdtruncate()(Tom)
2493 IRIX linking fix from Yu Cao >yucao@falcon.kla-tencor.com<
2494 Repair logic error in LIKE: should not return LIKE_ABORT
2495 when reach end of pattern before end of text(Tom)
2496 Repair incorrect cleanup of heap memory allocation during transaction abort(Tom
2498 Updated version of pgaccess 0.98
2500 _________________________________________________________________
2504 Release date: 1999-07-15
2506 This is basically a cleanup release for 6.5. We have fixed a variety
2507 of problems reported by 6.5 users.
2508 _________________________________________________________________
2510 Migration to version 6.5.1
2512 A dump/restore is *not* required for those running 6.5.
2513 _________________________________________________________________
2518 Portability fixes for linux_ppc, IRIX, linux_alpha, OpenBSD, alpha
2519 Remove QUERY_LIMIT, use SELECT...LIMIT
2520 Fix for EXPLAIN on inheritance(Tom)
2521 Patch to allow vacuum on multisegment tables(Hiroshi)
2522 R-Tree optimizer selectivity fix(Tom)
2523 ACL file descriptor leak fix(Atsushi Ogawa)
2524 New expresssion subtree code(Tom)
2525 Avoid disk writes for read-only transactions(Vadim)
2526 Fix for removal of temp tables if last transaction was aborted(Bruce)
2527 Fix to prevent too large tuple from being created(Bruce)
2529 Allow port numbers 32k - 64k(Bruce)
2530 Add ^ precidence(Bruce)
2531 Rename sort files called pg_temp to pg_sorttemp(Bruce)
2532 Fix for microseconds in time values(Tom)
2533 Tutorial source cleanup
2535 Fix for sorting of NULL's in some cases(Tom)
2536 Shared library dependencies fixed (Tom)
2537 Fixed glitches affecting GROUP BY in subselects(Tom)
2538 Fix some compiler warnings (Tomoaki Nishiyama)
2539 Add Win1250 (Czech) support (Pavel Behal)
2541 _________________________________________________________________
2545 Release date: 1999-06-09
2547 This release marks a major step in the development team's mastery of
2548 the source code we inherited from Berkeley. You will see we are now
2549 easily adding major features, thanks to the increasing size and
2550 experience of our world-wide development team.
2552 Here is a brief summary of the more notable changes:
2554 Multiversion concurrency control(MVCC)
2555 This removes our old table-level locking, and replaces it with
2556 a locking system that is superior to most commercial database
2557 systems. In a traditional system, each row that is modified is
2558 locked until committed, preventing reads by other users. MVCC
2559 uses the natural multiversion nature of PostgreSQL to allow
2560 readers to continue reading consistent data during writer
2561 activity. Writers continue to use the compact pg_log
2562 transaction system. This is all performed without having to
2563 allocate a lock for every row like traditional database
2564 systems. So, basically, we no longer are restricted by simple
2565 table-level locking; we have something better than row-level
2568 Hot backups from pg_dump
2569 pg_dump takes advantage of the new MVCC features to give a
2570 consistent database dump/backup while the database stays online
2571 and available for queries.
2574 We now have a true numeric data type, with user-specified
2578 Temporary tables are guaranteed to have unique names within a
2579 database session, and are destroyed on session exit.
2582 We now have CASE, INTERSECT, and EXCEPT statement support. We
2583 have new LIMIT/OFFSET, SET TRANSACTION ISOLATION LEVEL, SELECT
2584 ... FOR UPDATE, and an improved LOCK TABLE command.
2587 We continue to speed up PostgreSQL, thanks to the variety of
2588 talents within our team. We have sped up memory allocation,
2589 optimization, table joins, and row transfer routines.
2592 We continue to expand our port list, this time including
2593 Windows NT/ix86 and NetBSD/arm32.
2596 Most interfaces have new versions, and existing functionality
2600 New and updated material is present throughout the
2601 documentation. New FAQs have been contributed for SGI and AIX
2602 platforms. The Tutorial has introductory information on SQL
2603 from Stefan Simkovics. For the User's Guide, there are
2604 reference pages covering the postmaster and more utility
2605 programs, and a new appendix contains details on date/time
2606 behavior. The Administrator's Guide has a new chapter on
2607 troubleshooting from Tom Lane. And the Programmer's Guide has a
2608 description of query processing, also from Stefan, and details
2609 on obtaining the PostgreSQL source tree via anonymous CVS and
2611 _________________________________________________________________
2613 Migration to version 6.5
2615 A dump/restore using pg_dump is required for those wishing to migrate
2616 data from any previous release of PostgreSQL. pg_upgrade can *not* be
2617 used to upgrade to this release because the on-disk structure of the
2618 tables has changed compared to previous releases.
2620 The new Multiversion Concurrency Control (MVCC) features can give
2621 somewhat different behaviors in multiuser environments. *Read and
2622 understand the following section to ensure that your existing
2623 applications will give you the behavior you need.*
2624 _________________________________________________________________
2626 Multiversion Concurrency Control
2628 Because readers in 6.5 don't lock data, regardless of transaction
2629 isolation level, data read by one transaction can be overwritten by
2630 another. In other words, if a row is returned by "SELECT" it doesn't
2631 mean that this row really exists at the time it is returned (i.e.
2632 sometime after the statement or transaction began) nor that the row is
2633 protected from being deleted or updated by concurrent transactions
2634 before the current transaction does a commit or rollback.
2636 To ensure the actual existence of a row and protect it against
2637 concurrent updates one must use "SELECT FOR UPDATE" or an appropriate
2638 "LOCK TABLE" statement. This should be taken into account when porting
2639 applications from previous releases of PostgreSQL and other
2642 Keep the above in mind if you are using "contrib/refint.*" triggers
2643 for referential integrity. Additional techniques are required now. One
2644 way is to use "LOCK parent_table IN SHARE ROW EXCLUSIVE MODE" command
2645 if a transaction is going to update/delete a primary key and use "LOCK
2646 parent_table IN SHARE MODE" command if a transaction is going to
2647 update/insert a foreign key.
2649 Note: Note that if you run a transaction in SERIALIZABLE mode then
2650 you must execute the "LOCK" commands above before execution of any
2651 DML statement ("SELECT/INSERT/DELETE/UPDATE/FETCH/COPY_TO") in the
2654 These inconveniences will disappear in the future when the ability to
2655 read dirty (uncommitted) data (regardless of isolation level) and true
2656 referential integrity will be implemented.
2657 _________________________________________________________________
2663 Fix text<->float8 and text<->float4 conversion functions(Thomas)
2664 Fix for creating tables with mixed-case constraints(Billy)
2665 Change exp()/pow() behavior to generate error on underflow/overflow(Jan)
2666 Fix bug in pg_dump -z
2667 Memory overrun cleanups(Tatsuo)
2668 Fix for lo_import crash(Tatsuo)
2669 Adjust handling of data type names to suppress double quotes(Thomas)
2670 Use type coercion for matching columns and DEFAULT(Thomas)
2671 Fix deadlock so it only checks once after one second of sleep(Bruce)
2672 Fixes for aggregates and PL/pgsql(Hiroshi)
2673 Fix for subquery crash(Vadim)
2674 Fix for libpq function PQfnumber and case-insensitive names(Bahman Rafatjoo)
2675 Fix for large object write-in-middle, no extra block, memory consumption(Tatsuo
2677 Fix for pg_dump -d or -D and quote special characters in INSERT
2678 Repair serious problems with dynahash(Tom)
2679 Fix INET/CIDR portability problems
2680 Fix problem with selectivity error in ALTER TABLE ADD COLUMN(Bruce)
2681 Fix executor so mergejoin of different column types works(Tom)
2682 Fix for Alpha OR selectivity bug
2683 Fix OR index selectivity problem(Bruce)
2684 Fix so \d shows proper length for char()/varchar()(Ryan)
2685 Fix tutorial code(Clark)
2686 Improve destroyuser checking(Oliver)
2687 Fix for Kerberos(Rodney McDuff)
2688 Fix for dropping database while dirty buffers(Bruce)
2689 Fix so sequence nextval() can be case-sensitive(Bruce)
2691 Drop buffers before destroying database files(Bruce)
2692 Fix case where executor evaluates functions twice(Tatsuo)
2693 Allow sequence nextval actions to be case-sensitive(Bruce)
2694 Fix optimizer indexing not working for negative numbers(Bruce)
2695 Fix for memory leak in executor with fjIsNull
2696 Fix for aggregate memory leaks(Erik Riedel)
2697 Allow username containing a dash GRANT permissions
2698 Cleanup of NULL in inet types
2699 Clean up system table bugs(Tom)
2700 Fix problems of PAGER and \? command(Masaaki Sakaida)
2701 Reduce default multisegment file size limit to 1GB(Peter)
2702 Fix for dumping of CREATE OPERATOR(Tom)
2703 Fix for backward scanning of cursors(Hiroshi Inoue)
2704 Fix for COPY FROM STDIN when using \i(Tom)
2705 Fix for subselect is compared inside an expression(Jan)
2706 Fix handling of error reporting while returning rows(Tom)
2707 Fix problems with reference to array types(Tom,Jan)
2708 Prevent UPDATE SET oid(Jan)
2709 Fix pg_dump so -t option can handle case-sensitive tablenames
2710 Fixes for GROUP BY in special cases(Tom, Jan)
2711 Fix for memory leak in failed queries(Tom)
2712 DEFAULT now supports mixed-case identifiers(Tom)
2713 Fix for multisegment uses of DROP/RENAME table, indexes(Ole Gjerde)
2714 Disable use of pg_dump with both -o and -d options(Bruce)
2715 Allow pg_dump to properly dump GROUP permissions(Bruce)
2716 Fix GROUP BY in INSERT INTO table SELECT * FROM table2(Jan)
2717 Fix for computations in views(Jan)
2718 Fix for aggregates on array indexes(Tom)
2719 Fix for DEFAULT handles single quotes in value requiring too many quotes
2720 Fix security problem with non-super users importing/exporting large objects(Tom
2722 Rollback of transaction that creates table cleaned up properly(Tom)
2723 Fix to allow long table and column names to generate proper serial names(Tom)
2727 Add "vacuumdb" utility
2728 Speed up libpq by allocating memory better(Tom)
2729 EXPLAIN all indexes used(Tom)
2730 Implement CASE, COALESCE, NULLIF expression(Thomas)
2731 New pg_dump table output format(Constantin)
2732 Add string min()/max() functions(Thomas)
2733 Extend new type coercion techniques to aggregates(Thomas)
2734 New moddatetime contrib(Terry)
2735 Update to pgaccess 0.96(Constantin)
2736 Add routines for single-byte "char" type(Thomas)
2737 Improved substr() function(Thomas)
2738 Improved multibyte handling(Tatsuo)
2739 Multiversion concurrency control/MVCC(Vadim)
2740 New Serialized mode(Vadim)
2741 Fix for tables over 2gigs(Peter)
2742 New SET TRANSACTION ISOLATION LEVEL(Vadim)
2743 New LOCK TABLE IN ... MODE(Vadim)
2744 Update ODBC driver(Byron)
2745 New NUMERIC data type(Jan)
2746 New SELECT FOR UPDATE(Vadim)
2747 Handle "NaN" and "Infinity" for input values(Jan)
2748 Improved date/year handling(Thomas)
2749 Improved handling of backend connections(Magnus)
2750 New options ELOG_TIMESTAMPS and USE_SYSLOG options for log files(Massimo)
2751 New TCL_ARRAYS option(Massimo)
2752 New INTERSECT and EXCEPT(Stefan)
2753 New pg_index.indisprimary for primary key tracking(D'Arcy)
2754 New pg_dump option to allow dropping of tables before creation(Brook)
2755 Speedup of row output routines(Tom)
2756 New READ COMMITTED isolation level(Vadim)
2757 New TEMP tables/indexes(Bruce)
2758 Prevent sorting if result is already sorted(Jan)
2759 New memory allocation optimization(Jan)
2760 Allow psql to do \p\g(Bruce)
2761 Allow multiple rule actions(Jan)
2762 Added LIMIT/OFFSET functionality(Jan)
2763 Improve optimizer when joining a large number of tables(Bruce)
2764 New intro to SQL from S. Simkovics' Master's Thesis (Stefan, Thomas)
2765 New intro to backend processing from S. Simkovics' Master's Thesis (Stefan)
2766 Improved int8 support(Ryan Bradetich, Thomas, Tom)
2767 New routines to convert between int8 and text/varchar types(Thomas)
2768 New bushy plans, where meta-tables are joined(Bruce)
2769 Enable right-hand queries by default(Bruce)
2770 Allow reliable maximum number of backends to be set at configure time
2771 (--with-maxbackends and postmaster switch (-N backends))(Tom)
2772 GEQO default now 10 tables because of optimizer speedups(Tom)
2773 Allow NULL=Var for MS-SQL portability(Michael, Bruce)
2774 Modify contrib check_primary_key() so either "automatic" or "dependent"(Anand)
2775 Allow psql \d on a view show query(Ryan)
2776 Speedup for LIKE(Bruce)
2777 Ecpg fixes/features, see src/interfaces/ecpg/ChangeLog file(Michael)
2778 JDBC fixes/features, see src/interfaces/jdbc/CHANGELOG(Peter)
2779 Make % operator have precedence like /(Bruce)
2780 Add new postgres -O option to allow system table structure changes(Bruce)
2781 Update contrib/pginterface/findoidjoins script(Tom)
2782 Major speedup in vacuum of deleted rows with indexes(Vadim)
2783 Allow non-SQL functions to run different versions based on arguments(Tom)
2784 Add -E option that shows actual queries sent by \dt and friends(Masaaki Sakaida
2786 Add version number in start-up banners for psql(Masaaki Sakaida)
2787 New contrib/vacuumlo removes large objects not referenced(Peter)
2788 New initialization for table sizes so non-vacuumed tables perform better(Tom)
2789 Improve error messages when a connection is rejected(Tom)
2790 Support for arrays of char() and varchar() fields(Massimo)
2791 Overhaul of hash code to increase reliability and performance(Tom)
2792 Update to PyGreSQL 2.4(D'Arcy)
2793 Changed debug options so -d4 and -d5 produce different node displays(Jan)
2794 New pg_options: pretty_plan, pretty_parse, pretty_rewritten(Jan)
2795 Better optimization statistics for system table access(Tom)
2796 Better handling of non-default block sizes(Massimo)
2797 Improve GEQO optimizer memory consumption(Tom)
2798 UNION now suppports ORDER BY of columns not in target list(Jan)
2799 Major libpq++ improvements(Vince Vielhaber)
2800 pg_dump now uses -z(ACL's) as default(Bruce)
2801 backend cache, memory speedups(Tom)
2802 have pg_dump do everything in one snapshot transaction(Vadim)
2803 fix for large object memory leakage, fix for pg_dumping(Tom)
2804 INET type now respects netmask for comparisons
2805 Make VACUUM ANALYZE only use a readlock(Vadim)
2806 Allow VIEWs on UNIONS(Jan)
2807 pg_dump now can generate consistent snapshots on active databases(Vadim)
2811 Improve port matching(Tom)
2812 Portability fixes for SunOS
2813 Add NT/Win32 backend port and enable dynamic loading(Magnus and Daniel Horak)
2814 New port to Cobalt Qube(Mips) running Linux(Tatsuo)
2815 Port to NetBSD/m68k(Mr. Mutsuki Nakajima)
2816 Port to NetBSD/sun3(Mr. Mutsuki Nakajima)
2817 Port to NetBSD/macppc(Toshimi Aoki)
2818 Fix for tcl/tk configuration(Vince)
2819 Removed CURRENT keyword for rule queries(Jan)
2820 NT dynamic loading now works(Daniel Horak)
2821 Add ARM32 support(Andrew McMurry)
2822 Better support for HP-UX 11 and UnixWare
2823 Improve file handling to be more uniform, prevent file descriptor leak(Tom)
2824 New install commands for plpgsql(Jan)
2826 _________________________________________________________________
2830 Release date: 1998-12-20
2832 The 6.4.1 release was improperly packaged. This also has one
2834 _________________________________________________________________
2836 Migration to version 6.4.2
2838 A dump/restore is *not* required for those running 6.4.*.
2839 _________________________________________________________________
2843 Fix for datetime constant problem on some platforms(Thomas)
2844 _________________________________________________________________
2848 Release date: 1998-12-18
2850 This is basically a cleanup release for 6.4. We have fixed a variety
2851 of problems reported by 6.4 users.
2852 _________________________________________________________________
2854 Migration to version 6.4.1
2856 A dump/restore is *not* required for those running 6.4.
2857 _________________________________________________________________
2861 Add pg_dump -N flag to force double quotes around identifiers. This is
2863 Fix for NOT in where clause causing crash(Bruce)
2864 EXPLAIN VERBOSE coredump fix(Vadim)
2865 Fix shared-library problems on Linux
2866 Fix test for table existance to allow mixed-case and whitespace in
2867 the table name(Thomas)
2868 Fix a couple of pg_dump bugs
2869 Configure matches template/.similar entries better(Tom)
2870 Change builtin function names from SPI_* to spi_*
2871 OR WHERE clause fix(Vadim)
2872 Fixes for mixed-case table names(Billy)
2873 contrib/linux/postgres.init.csh/sh fix(Thomas)
2874 libpq memory overrun fix
2876 Change exp() behavior to generate error on underflow(Thomas)
2877 pg_dump fixes for memory leak, inheritance constraints, layout change
2878 update pgaccess to 0.93
2879 Fix prototype for 64-bit platforms
2880 Multibyte fixes(Tatsuo)
2882 Fix memory overruns(Tatsuo)
2883 Fix for lo_import() crash(Bruce)
2884 Better search for install program(Tom)
2887 Use implicit type coercion for matching DEFAULT values(Thomas)
2888 Add routines to help with single-byte (internal) character type(Thomas)
2889 Compilation of libpq for Win32 fixes(Magnus)
2890 Upgrade to PyGreSQL 2.2(D'Arcy)
2891 _________________________________________________________________
2895 Release date: 1998-10-30
2897 There are *many* new features and improvements in this release. Thanks
2898 to our developers and maintainers, nearly every aspect of the system
2899 has received some attention since the previous release. Here is a
2900 brief, incomplete summary:
2902 * Views and rules are now functional thanks to extensive new code in
2903 the rewrite rules system from Jan Wieck. He also wrote a chapter
2904 on it for the Programmer's Guide.
2905 * Jan also contributed a second procedural language, PL/pgSQL, to go
2906 with the original PL/pgTCL procedural language he contributed last
2908 * We have optional multiple-byte character set support from Tatsuo
2909 Ishii to complement our existing locale support.
2910 * Client/server communications has been cleaned up, with better
2911 support for asynchronous messages and interrupts thanks to Tom
2913 * The parser will now perform automatic type coercion to match
2914 arguments to available operators and functions, and to match
2915 columns and expressions with target columns. This uses a generic
2916 mechanism which supports the type extensibility features of
2917 PostgreSQL. There is a new chapter in the User's Guide which
2919 * Three new data types have been added. Two types, inet and cidr,
2920 support various forms of IP network, subnet, and machine
2921 addressing. There is now an 8-byte integer type available on some
2922 platforms. See the chapter on data types in the User's Guide for
2923 details. A fourth type, serial, is now supported by the parser as
2924 an amalgam of the int4 type, a sequence, and a unique index.
2925 * Several more SQL92-compatible syntax features have been added,
2926 including "INSERT DEFAULT VALUES"
2927 * The automatic configuration and installation system has received
2928 some attention, and should be more robust for more platforms than
2930 _________________________________________________________________
2932 Migration to version 6.4
2934 A dump/restore using pg_dump or pg_dumpall is required for those
2935 wishing to migrate data from any previous release of PostgreSQL.
2936 _________________________________________________________________
2942 Fix for a tiny memory leak in PQsetdb/PQfinish(Bryan)
2943 Remove char2-16 data types, use char/varchar(Darren)
2944 Pqfn not handles a NOTICE message(Anders)
2945 Reduced busywaiting overhead for spinlocks with many backends (dg)
2946 Stuck spinlock detection (dg)
2947 Fix up "ISO-style" timespan decoding and encoding(Thomas)
2948 Fix problem with table drop after rollback of transaction(Vadim)
2949 Change error message and remove non-functional update message(Vadim)
2950 Fix for COPY array checking
2951 Fix for SELECT 1 UNION SELECT NULL
2952 Fix for buffer leaks in large object calls(Pascal)
2953 Change owner from oid to int4 type(Bruce)
2954 Fix a bug in the oracle compatibility functions btrim() ltrim() and rtrim()
2955 Fix for shared invalidation cache overflow(Massimo)
2956 Prevent file descriptor leaks in failed COPY's(Bruce)
2957 Fix memory leak in libpgtcl's pg_select(Constantin)
2958 Fix problems with username/passwords over 8 characters(Tom)
2959 Fix problems with handling of asynchronous NOTIFY in backend(Tom)
2960 Fix of many bad system table entries(Tom)
2964 Upgrade ecpg and ecpglib,see src/interfaces/ecpc/ChangeLog(Michael)
2965 Show the index used in an EXPLAIN(Zeugswetter)
2966 EXPLAIN invokes rule system and shows plan(s) for rewritten queries(Jan)
2967 Multibyte awareness of many data types and functions, via configure(Tatsuo)
2968 New configure --with-mb option(Tatsuo)
2969 New initdb --pgencoding option(Tatsuo)
2970 New createdb -E multibyte option(Tatsuo)
2971 Select version(); now returns PostgreSQL version(Jeroen)
2972 Libpq now allows asynchronous clients(Tom)
2973 Allow cancel from client of backend query(Tom)
2974 Psql now cancels query with Control-C(Tom)
2975 Libpq users need not issue dummy queries to get NOTIFY messages(Tom)
2976 NOTIFY now sends sender's PID, so you can tell whether it was your own(Tom)
2977 PGresult struct now includes associated error message, if any(Tom)
2978 Define "tz_hour" and "tz_minute" arguments to date_part()(Thomas)
2979 Add routines to convert between varchar and bpchar(Thomas)
2980 Add routines to allow sizing of varchar and bpchar into target columns(Thomas)
2981 Add bit flags to support timezonehour and minute in data retrieval(Thomas)
2982 Allow more variations on valid floating point numbers (e.g. ".1", "1e6")(Thomas
2984 Fixes for unary minus parsing with leading spaces(Thomas)
2985 Implement TIMEZONE_HOUR, TIMEZONE_MINUTE per SQL92 specs(Thomas)
2986 Check for and properly ignore FOREIGN KEY column constraints(Thomas)
2987 Define USER as synonym for CURRENT_USER per SQL92 specs(Thomas)
2988 Enable HAVING clause but no fixes elsewhere yet.
2989 Make "char" type a synonym for "char(1)" (actually implemented as bpchar)(Thoma
2991 Save string type if specified for DEFAULT clause handling(Thomas)
2992 Coerce operations involving different data types(Thomas)
2993 Allow some index use for columns of different types(Thomas)
2994 Add capabilities for automatic type conversion(Thomas)
2995 Cleanups for large objects, so file is truncated on open(Peter)
2996 Readline cleanups(Tom)
2997 Allow psql \f \ to make spaces as delimiter(Bruce)
2998 Pass pg_attribute.atttypmod to the frontend for column field lengths(Tom,Bruce)
2999 Msql compatibility library in /contrib(Aldrin)
3000 Remove the requirement that ORDER/GROUP BY clause identifiers be
3001 included in the target list(David)
3002 Convert columns to match columns in UNION clauses(Thomas)
3003 Remove fork()/exec() and only do fork()(Bruce)
3004 Jdbc cleanups(Peter)
3005 Show backend status on ps command line(only works on some platforms)(Bruce)
3006 Pg_hba.conf now has a sameuser option in the database field
3007 Make lo_unlink take oid param, not int4
3008 New DISABLE_COMPLEX_MACRO for compilers that can't handle our macros(Bruce)
3009 Libpgtcl now handles NOTIFY as a Tcl event, need not send dummy queries(Tom)
3010 libpgtcl cleanups(Tom)
3011 Add -error option to libpgtcl's pg_result command(Tom)
3012 New locale patch, see docs/README/locale(Oleg)
3013 Fix for pg_dump so CONSTRAINT and CHECK syntax is correct(ccb)
3014 New contrib/lo code for large object orphan removal(Peter)
3015 New psql command "SET CLIENT_ENCODING TO 'encoding'" for multibytes
3016 feature, see /doc/README.mb(Tatsuo)
3017 /contrib/noupdate code to revoke update permission on a column
3018 Libpq can now be compiled on win32(Magnus)
3019 Add PQsetdbLogin() in libpq
3020 New 8-byte integer type, checked by configure for OS support(Thomas)
3021 Better support for quoted table/column names(Thomas)
3022 Surround table and column names with double-quotes in pg_dump(Thomas)
3023 PQreset() now works with passwords(Tom)
3024 Handle case of GROUP BY target list column number out of range(David)
3025 Allow UNION in subselects
3026 Add auto-size to screen to \d? commands(Bruce)
3027 Use UNION to show all \d? results in one query(Bruce)
3028 Add \d? field search feature(Bruce)
3029 Pg_dump issues fewer \connect requests(Tom)
3030 Make pg_dump -z flag work better, document it in manual page(Tom)
3031 Add HAVING clause with full support for subselects and unions(Stephan)
3032 Full text indexing routines in contrib/fulltextindex(Maarten)
3033 Transaction ids now stored in shared memory(Vadim)
3034 New PGCLIENTENCODING when issuing COPY command(Tatsuo)
3035 Support for SQL92 syntax "SET NAMES"(Tatsuo)
3036 Support for LATIN2-5(Tatsuo)
3037 Add UNICODE regression test case(Tatsuo)
3038 Lock manager cleanup, new locking modes for LLL(Vadim)
3039 Allow index use with OR clauses(Bruce)
3040 Allows "SELECT NULL ORDER BY 1;"
3041 Explain VERBOSE prints the plan, and now pretty-prints the plan to
3042 the postmaster log file(Bruce)
3043 Add indexes display to \d command(Bruce)
3044 Allow GROUP BY on functions(David)
3045 New pg_class.relkind for large objects(Bruce)
3046 New way to send libpq NOTICE messages to a different location(Tom)
3047 New \w write command to psql(Bruce)
3048 New /contrib/findoidjoins scans oid columns to find join relationships(Bruce)
3049 Allow binary-compatible indexes to be considered when checking for valid
3050 Indexes for restriction clauses containing a constant(Thomas)
3051 New ISBN/ISSN code in /contrib/isbn_issn
3052 Allow NOT LIKE, IN, NOT IN, BETWEEN, and NOT BETWEEN constraint(Thomas)
3053 New rewrite system fixes many problems with rules and views(Jan)
3054 * Rules on relations work
3055 * Event qualifications on insert/update/delete work
3056 * New OLD variable to reference CURRENT, CURRENT will be remove in futu
3058 * Update rules can reference NEW and OLD in rule qualifications/actions
3059 * Insert/update/delete rules on views work
3060 * Multiple rule actions are now supported, surrounded by parentheses
3061 * Regular users can create views/rules on tables they have RULE permits
3062 * Rules and views inherit the permissions on the creator
3063 * No rules at the column level
3064 * No UPDATE NEW/OLD rules
3065 * New pg_tables, pg_indexes, pg_rules and pg_views system views
3066 * Only a single action on SELECT rules
3067 * Total rewrite overhaul, perhaps for 6.5
3069 * handle aggregates on views
3070 * handle insert into select from view works
3071 System indexes are now multikey(Bruce)
3072 Oidint2, oidint4, and oidname types are removed(Bruce)
3073 Use system cache for more system table lookups(Bruce)
3074 New backend programming language PL/pgSQL in backend/pl(Jan)
3075 New SERIAL data type, auto-creates sequence/index(Thomas)
3076 Enable assert checking without a recompile(Massimo)
3077 User lock enhancements(Massimo)
3078 New setval() command to set sequence value(Massimo)
3079 Auto-remove unix socket file on start-up if no postmaster running(Massimo)
3080 Conditional trace package(Massimo)
3081 New UNLISTEN command(Massimo)
3082 Psql and libpq now compile under win32 using win32.mak(Magnus)
3083 Lo_read no longer stores trailing NULL(Bruce)
3084 Identifiers are now truncated to 31 characters internally(Bruce)
3085 Createuser options now availble on the command line
3086 Code for 64-bit integer supported added, configure tested, int8 type(Thomas)
3087 Prevent file descriptor leaf from failed COPY(Bruce)
3088 New pg_upgrade command(Bruce)
3089 Updated /contrib directories(Massimo)
3090 New CREATE TABLE DEFAULT VALUES statement available(Thomas)
3091 New INSERT INTO TABLE DEFAULT VALUES statement available(Thomas)
3092 New DECLARE and FETCH feature(Thomas)
3093 libpq's internal structures now not exported(Tom)
3094 Allow up to 8 key indexes(Bruce)
3095 Remove ARCHIVE keyword, that is no longer used(Thomas)
3096 pg_dump -n flag to supress quotes around indentifiers
3097 disable system columns for views(Jan)
3098 new INET and CIDR types for network addresses(TomH, Paul)
3099 no more double quotes in psql output
3100 pg_dump now dumps views(Terry)
3101 new SET QUERY_LIMIT(Tatsuo,Jan)
3105 /contrib cleanup(Jun)
3106 Inline some small functions called for every row(Bruce)
3109 Multibyte regression tests(Soonmyung.)
3110 Remove --disabled options from configure
3111 Define PGDOC to use POSTGRESDIR by default
3112 Make regression optional
3113 Remove extra braces code to pgindent(Bruce)
3114 Add bsdi shared library support(Bruce)
3115 New --without-CXX support configure option(Brook)
3117 Update backend flowchart in tools/backend(Bruce)
3118 Change atttypmod from int16 to int32(Bruce, Tom)
3119 Getrusage() fix for platforms that do not have it(Tom)
3120 Add PQconnectdb, PGUSER, PGPASSWORD to libpq man page
3121 NS32K platform fixes(Phil Nelson, John Buller)
3122 SCO 7/UnixWare 2.x fixes(Billy,others)
3123 Sparc/Solaris 2.5 fixes(Ryan)
3124 Pgbuiltin.3 is obsolete, move to doc files(Thomas)
3125 Even more documention(Thomas)
3126 Nextstep support(Jacek)
3128 pginterface manual page(Bruce)
3129 shared libraries all have version numbers
3130 merged all OS-specific shared library defines into one file
3131 smarter TCL/TK configuration checking(Billy)
3132 smarter perl configuration(Brook)
3133 configure uses supplied install-sh if no install script found(Tom)
3134 new Makefile.shlib for shared library configuration(Tom)
3135 _________________________________________________________________
3139 Release date: 1998-04-07
3141 This is a bug-fix release for 6.3.x. Refer to the release notes for
3142 version 6.3 for a more complete summary of new features.
3146 * Repairs automatic configuration support for some platforms,
3147 including Linux, from breakage inadvertently introduced in version
3149 * Correctly handles function calls on the left side of BETWEEN and
3152 A dump/restore is NOT required for those running 6.3 or 6.3.1. A make
3153 distclean, make, and make install is all that is required. This last
3154 step should be performed while the postmaster is not running. You
3155 should re-link any custom applications that use PostgreSQL libraries.
3157 For upgrades from pre-6.3 installations, refer to the installation and
3158 migration instructions for version 6.3.
3159 _________________________________________________________________
3163 Configure detection improvements for tcl/tk(Brook Milligan, Alvin)
3164 Manual page improvements(Bruce)
3165 BETWEEN and LIKE fix(Thomas)
3166 fix for psql \connect used by pg_dump(Oliver Elphick)
3168 pgaccess, version 0.86
3169 qsort removed, now uses libc version, cleanups(Jeroen)
3170 fix for buffer over-runs detected(Maurice Gittens)
3171 fix for buffer overrun in libpgtcl(Randy Kunkee)
3172 fix for UNION with DISTINCT or ORDER BY(Bruce)
3173 gettimeofday configure check(Doug Winterburn)
3174 Fix "indexes not used" bug(Vadim)
3175 docs additions(Thomas)
3176 Fix for backend memory leak(Bruce)
3177 libreadline cleanup(Erwan MAS)
3178 Remove DISTDIR(Bruce)
3179 Makefile dependency cleanup(Jeroen van Vianen)
3182 _________________________________________________________________
3186 Release date: 1998-03-23
3190 * Additional support for multibyte character sets.
3191 * Repair byte ordering for mixed-endian clients and servers.
3192 * Minor updates to allowed SQL syntax.
3193 * Improvements to the configuration autodetection for installation.
3195 A dump/restore is NOT required for those running 6.3. A make
3196 distclean, make, and make install is all that is required. This last
3197 step should be performed while the postmaster is not running. You
3198 should re-link any custom applications that use PostgreSQL libraries.
3200 For upgrades from pre-6.3 installations, refer to the installation and
3201 migration instructions for version 6.3.
3202 _________________________________________________________________
3206 ecpg cleanup/fixes, now version 1.1(Michael Meskes)
3207 pg_user cleanup(Bruce)
3208 large object fix for pg_dump and tclsh (alvin)
3209 LIKE fix for multiple adjacent underscores
3210 fix for redefining builtin functions(Thomas)
3212 upgrade to pg_access 0.83
3213 updated CLUSTER manual page
3214 multibyte character set support, see doc/README.mb(Tatsuo)
3215 configure --with-pgport fix
3217 big-endian fix for backend communications(Kataoka)
3218 SUBSTR() and substring() fix(Jan)
3219 several jdbc fixes(Peter)
3220 libpgtcl improvements, see libptcl/README(Randy Kunkee)
3221 Fix for "Datasize = 0" error(Vadim)
3222 Prevent \do from wrapping(Bruce)
3223 Remove duplicate Russian character set entries
3225 Allow optional TABLE keyword in LOCK and SELECT INTO(Thomas)
3226 CREATE SEQUENCE options to allow a negative integer(Thomas)
3227 Add "PASSWORD" as an allowed column identifier(Thomas)
3228 Add checks for UNION target fields(Bruce)
3229 Fix Alpha port(Dwayne Bailey)
3230 Fix for text arrays containing quotes(Doug Gibson)
3231 Solaris compile fix(Albert Chin-A-Young)
3232 Better identify tcl and tk libs and includes(Bruce)
3234 _________________________________________________________________
3238 Release date: 1998-03-01
3240 There are *many* new features and improvements in this release. Here
3241 is a brief, incomplete summary:
3243 * Many new SQL features, including full SQL92 subselect capability
3244 (everything is here but target-list subselects).
3245 * Support for client-side environment variables to specify time zone
3247 * Socket interface for client/server connection. This is the default
3248 now so you may need to start postmaster with the "-i" flag.
3249 * Better password authorization mechanisms. Default table
3250 permissions have changed.
3251 * Old-style time travel has been removed. Performance has been
3254 Note: Bruce Momjian wrote the following notes to introduce the new
3257 There are some general 6.3 issues that I want to mention. These are
3258 only the big items that can not be described in one sentence. A review
3259 of the detailed changes list is still needed.
3261 First, we now have subselects. Now that we have them, I would like to
3262 mention that without subselects, SQL is a very limited language.
3263 Subselects are a major feature, and you should review your code for
3264 places where subselects provide a better solution for your queries. I
3265 think you will find that there are more uses for subselects than you
3266 may think. Vadim has put us on the big SQL map with subselects, and
3267 fully functional ones too. The only thing you can't do with subselects
3268 is to use them in the target list.
3270 Second, 6.3 uses Unix domain sockets rather than TCP/IP by default. To
3271 enable connections from other machines, you have to use the new
3272 postmaster -i option, and of course edit "pg_hba.conf". Also, for this
3273 reason, the format of "pg_hba.conf" has changed.
3275 Third, char() fields will now allow faster access than varchar() or
3276 text. Specifically, the text and varchar() have a penalty for access
3277 to any columns after the first column of this type. char() used to
3278 also have this access penalty, but it no longer does. This may suggest
3279 that you redesign some of your tables, especially if you have short
3280 character columns that you have defined as varchar() or text. This and
3281 other changes make 6.3 even faster than earlier releases.
3283 We now have passwords definable independent of any Unix file. There
3284 are new SQL USER commands. See the Administrator's Guide for more
3285 information. There is a new table, pg_shadow, which is used to store
3286 user information and user passwords, and it by default only
3287 SELECT-able by the postgres super-user. pg_user is now a view of
3288 pg_shadow, and is SELECT-able by PUBLIC. You should keep using pg_user
3289 in your application without changes.
3291 User-created tables now no longer have SELECT permission to PUBLIC by
3292 default. This was done because the ANSI standard requires it. You can
3293 of course GRANT any permissions you want after the table is created.
3294 System tables continue to be SELECT-able by PUBLIC.
3296 We also have real deadlock detection code. No more sixty-second
3297 timeouts. And the new locking code implements a FIFO better, so there
3298 should be less resource starvation during heavy use.
3300 Many complaints have been made about inadequate documentation in
3301 previous releases. Thomas has put much effort into many new manuals
3302 for this release. Check out the doc/ directory.
3304 For performance reasons, time travel is gone, but can be implemented
3305 using triggers (see "pgsql/contrib/spi/README"). Please check out the
3306 new \d command for types, operators, etc. Also, views have their own
3307 permissions now, not based on the underlying tables, so permissions on
3308 them have to be set separately. Check "/pgsql/interfaces" for some new
3309 ways to talk to PostgreSQL.
3311 This is the first release that really required an explanation for
3312 existing users. In many ways, this was necessary because the new
3313 release removes many limitations, and the work-arounds people were
3314 using are no longer needed.
3315 _________________________________________________________________
3317 Migration to version 6.3
3319 A dump/restore using pg_dump or pg_dumpall is required for those
3320 wishing to migrate data from any previous release of PostgreSQL.
3321 _________________________________________________________________
3327 Fix binary cursors broken by MOVE implementation(Vadim)
3328 Fix for tcl library crash(Jan)
3329 Fix for array handling, from Gerhard Hintermayer
3330 Fix acl error, and remove duplicate pqtrace(Bruce)
3331 Fix psql \e for empty file(Bruce)
3332 Fix for textcat on varchar() fields(Bruce)
3333 Fix for DBT Sendproc (Zeugswetter Andres)
3334 Fix vacuum analyze syntax problem(Bruce)
3335 Fix for international identifiers(Tatsuo)
3336 Fix aggregates on inherited tables(Bruce)
3337 Fix substr() for out-of-bounds data
3338 Fix for select 1=1 or 2=2, select 1=1 and 2=2, and select sum(2+2)(Bruce)
3339 Fix notty output to show status result. -q option still turns it off(Bruce)
3340 Fix for count(*), aggs with views and multiple tables and sum(3)(Bruce)
3342 Fix for PQtrace start/stop several times(Bruce)
3343 Fix a variety of locking problems like newer lock waiters getting
3344 lock before older waiters, and having readlock people not share
3345 locks if a writer is waiting for a lock, and waiting writers not
3346 getting priority over waiting readers(Bruce)
3347 Fix crashes in psql when executing queries from external files(James)
3348 Fix problem with multiple order by columns, with the first one having
3350 Use correct hash table support functions for float8 and int4(Thomas)
3351 Re-enable JOIN= option in CREATE OPERATOR statement (Thomas)
3352 Change precedence for boolean operators to match expected behavior(Thomas)
3353 Generate elog(ERROR) on over-large integer(Bruce)
3354 Allow multiple-argument functions in constraint clauses(Thomas)
3355 Check boolean input literals for 'true','false','yes','no','1','0'
3356 and throw elog(ERROR) if unrecognized(Thomas)
3357 Major large objects fix
3358 Fix for GROUP BY showing duplicates(Vadim)
3359 Fix for index scans in MergeJion(Vadim)
3363 Subselects with EXISTS, IN, ALL, ANY keywords (Vadim, Bruce, Thomas)
3364 New User Manual(Thomas, others)
3365 Speedup by inlining some frequently-called functions
3366 Real deadlock detection, no more timeouts(Bruce)
3367 Add SQL92 "constants" CURRENT_DATE, CURRENT_TIME, CURRENT_TIMESTAMP,
3368 CURRENT_USER(Thomas)
3369 Modify constraint syntax to be SQL92-compliant(Thomas)
3370 Implement SQL92 PRIMARY KEY and UNIQUE clauses using indexes(Thomas)
3371 Recognize SQL92 syntax for FOREIGN KEY. Throw elog notice(Thomas)
3372 Allow NOT NULL UNIQUE constraint clause (each allowed separately before)(Thomas
3374 Allow PostgreSQL-style casting ("::") of non-constants(Thomas)
3375 Add support for SQL3 TRUE and FALSE boolean constants(Thomas)
3376 Support SQL92 syntax for IS TRUE/IS FALSE/IS NOT TRUE/IS NOT FALSE(Thomas)
3377 Allow shorter strings for boolean literals (e.g. "t", "tr", "tru")(Thomas)
3378 Allow SQL92 delimited identifiers(Thomas)
3379 Implement SQL92 binary and hexadecimal string decoding (b'10' and x'1F')(Thomas
3381 Support SQL92 syntax for type coercion of literal strings
3382 (e.g. "DATETIME 'now'")(Thomas)
3383 Add conversions for int2, int4, and OID types to and from text(Thomas)
3384 Use shared lock when building indexes(Vadim)
3385 Free memory allocated for an user query inside transaction block after
3386 this query is done, was turned off in <= 6.2.1(Vadim)
3387 New SQL statement CREATE PROCEDURAL LANGUAGE(Jan)
3388 New PostgreSQL Procedural Language (PL) backend interface(Jan)
3389 Rename pg_dump -H option to -h(Bruce)
3390 Add Java support for passwords, European dates(Peter)
3391 Use indexes for LIKE and ~, !~ operations(Bruce)
3392 Add hash functions for datetime and timespan(Thomas)
3393 Time Travel removed(Vadim, Bruce)
3394 Add paging for \d and \z, and fix \i(Bruce)
3395 Add Unix domain socket support to backend and to frontend library(Goran)
3396 Implement CREATE DATABASE/WITH LOCATION and initlocation utility(Thomas)
3397 Allow more SQL92 and/or PostgreSQL reserved words as column identifiers(Thomas)
3398 Augment support for SQL92 SET TIME ZONE...(Thomas)
3399 SET/SHOW/RESET TIME ZONE uses TZ backend environment variable(Thomas)
3400 Implement SET keyword = DEFAULT and SET TIME ZONE DEFAULT(Thomas)
3401 Enable SET TIME ZONE using TZ environment variable(Thomas)
3402 Add PGDATESTYLE environment variable to frontend and backend initialization(Tho
3404 Add PGTZ, PGCOSTHEAP, PGCOSTINDEX, PGRPLANS, PGGEQO
3405 frontend library initialization environment variables(Thomas)
3406 Regression tests time zone automatically set with "setenv PGTZ PST8PDT"(Thomas)
3407 Add pg_description table for info on tables, columns, operators, types, and
3409 Increase 16 char limit on system table/index names to 32 characters(Bruce)
3410 Rename system indexes(Bruce)
3411 Add 'GERMAN' option to SET DATESTYLE(Thomas)
3412 Define an "ISO-style" timespan output format with "hh:mm:ss" fields(Thomas)
3413 Allow fractional values for delta times (e.g. '2.5 days')(Thomas)
3414 Validate numeric input more carefully for delta times(Thomas)
3415 Implement day of year as possible input to date_part()(Thomas)
3416 Define timespan_finite() and text_timespan() functions(Thomas)
3417 Remove archive stuff(Bruce)
3418 Allow for a pg_password authentication database that is separate from
3419 the system password file(Todd)
3420 Dump ACLs, GRANT, REVOKE permissions(Matt)
3421 Define text, varchar, and bpchar string length functions(Thomas)
3422 Fix Query handling for inheritance, and cost computations(Bruce)
3423 Implement CREATE TABLE/AS SELECT (alternative to SELECT/INTO)(Thomas)
3424 Allow NOT, IS NULL, IS NOT NULL in constraints(Thomas)
3425 Implement UNIONs for SELECT(Bruce)
3426 Add UNION, GROUP, DISTINCT to INSERT(Bruce)
3427 varchar() stores only necessary bytes on disk(Bruce)
3428 Fix for BLOBs(Peter)
3429 Mega-Patch for JDBC...see README_6.3 for list of changes(Peter)
3430 Remove unused "option" from PQconnectdb()
3431 New LOCK command and lock manual page describing deadlocks(Bruce)
3432 Add new psql \da, \dd, \df, \do, \dS, and \dT commands(Bruce)
3433 Enhance psql \z to show sequences(Bruce)
3434 Show NOT NULL and DEFAULT in psql \d table(Bruce)
3435 New psql .psqlrc file start-up(Andrew)
3436 Modify sample start-up script in contrib/linux to show syslog(Thomas)
3437 New types for IP and MAC addresses in contrib/ip_and_mac(TomH)
3438 Unix system time conversions with date/time types in contrib/unixdate(Thomas)
3439 Update of contrib stuff(Massimo)
3440 Add Unix socket support to DBD::Pg(Goran)
3441 New python interface (PyGreSQL 2.0)(D'Arcy)
3442 New frontend/backend protocol has a version number, network byte order(Phil)
3443 Security features in pg_hba.conf enhanced and documented, many cleanups(Phil)
3444 CHAR() now faster access than VARCHAR() or TEXT
3445 ecpg embedded SQL preprocessor
3446 Reduce system column overhead(Vadmin)
3447 Remove pg_time table(Vadim)
3448 Add pg_type attribute to identify types that need length (bpchar, varchar)
3449 Add report of offending line when COPY command fails
3450 Allow VIEW permissions to be set separately from the underlying tables.
3451 For security, use GRANT/REVOKE on views as appropriate(Jan)
3452 Tables now have no default GRANT SELECT TO PUBLIC. You must
3453 explicitly grant such permissions.
3454 Clean up tutorial examples(Darren)
3458 Add new html development tools, and flow chart in /tools/backend
3459 Fix for SCO compiles
3460 Stratus computer port Robert Gillies
3461 Added support for shlib for BSD44_derived & i386_solaris
3462 Make configure more automated(Brook)
3463 Add script to check regression test results
3464 Break parser functions into smaller files, group together(Bruce)
3465 Rename heap_create to heap_create_and_catalog, rename heap_creatr
3466 to heap_create()(Bruce)
3467 Sparc/Linux patch for locking(TomS)
3468 Remove PORTNAME and reorganize port-specific stuff(Marc)
3469 Add optimizer README file(Bruce)
3470 Remove some recursion in optimizer and clean up some code there(Bruce)
3471 Fix for NetBSD locking(Henry)
3472 Fix for libptcl make(Tatsuo)
3474 Change IS TRUE, IS FALSE, ... to expressions using "=" rather than
3475 function calls to istrue() or isfalse() to allow optimization(Thomas)
3476 Various fixes NetBSD/Sparc related(TomH)
3477 Alpha linux locking(Travis,Ryan)
3478 Change elog(WARN) to elog(ERROR)(Bruce)
3479 FAQ for FreeBSD(Marc)
3480 Bring in the PostODBC source tree as part of our standard distribution(Marc)
3481 A minor patch for HP/UX 10 vs 9(Stan)
3482 New pg_attribute.atttypmod for type-specific info like varchar length(Bruce)
3483 UnixWare patches(Billy)
3484 New i386 'lock' for spin lock asm(Billy)
3485 Support for multiplexed backends is removed
3486 Start an OpenBSD port
3489 Add string functions to regression suite(Thomas)
3490 Expand a few function names formerly truncated to 16 characters(Thomas)
3491 Remove un-needed malloc() calls and replace with palloc()(Bruce)
3492 _________________________________________________________________
3496 Release date: 1997-10-17
3498 6.2.1 is a bug-fix and usability release on 6.2.
3502 * Allow strings to span lines, per SQL92.
3503 * Include example trigger function for inserting user names on table
3506 This is a minor bug-fix release on 6.2. For upgrades from pre-6.2
3507 systems, a full dump/reload is required. Refer to the 6.2 release
3508 notes for instructions.
3509 _________________________________________________________________
3511 Migration from version 6.2 to version 6.2.1
3513 This is a minor bug-fix release. A dump/reload is not required from
3514 version 6.2, but is required from any release prior to 6.2.
3516 In upgrading from version 6.2, if you choose to dump/reload you will
3517 find that avg(money) is now calculated correctly. All other bug fixes
3518 take effect upon updating the executables.
3520 Another way to avoid dump/reload is to use the following SQL command
3521 from "psql" to update the existing system table:
3522 update pg_aggregate set aggfinalfn = 'cash_div_flt8'
3523 where aggname = 'avg' and aggbasetype = 790;
3525 This will need to be done to every existing database, including
3527 _________________________________________________________________
3531 Allow TIME and TYPE column names(Thomas)
3532 Allow larger range of true/false as boolean values(Thomas)
3533 Support output of "now" and "current"(Thomas)
3534 Handle DEFAULT with INSERT of NULL properly(Vadim)
3535 Fix for relation reference counts problem in buffer manager(Vadim)
3536 Allow strings to span lines, like ANSI(Thomas)
3537 Fix for backward cursor with ORDER BY(Vadim)
3538 Fix avg(cash) computation(Thomas)
3539 Fix for specifying a column twice in ORDER/GROUP BY(Vadim)
3540 Documented new libpq function to return affected rows, PQcmdTuples(Bruce)
3541 Trigger function for inserting user names for INSERT/UPDATE(Brook Milligan)
3543 _________________________________________________________________
3547 Release date: 1997-10-02
3549 A dump/restore is required for those wishing to migrate data from
3550 previous releases of PostgreSQL.
3551 _________________________________________________________________
3553 Migration from version 6.1 to version 6.2
3555 This migration requires a complete dump of the 6.1 database and a
3556 restore of the database in 6.2.
3558 Note that the "pg_dump" and "pg_dumpall" utility from 6.2 should be
3559 used to dump the 6.1 database.
3560 _________________________________________________________________
3562 Migration from version 1.x to version 6.2
3564 Those migrating from earlier 1.* releases should first upgrade to 1.09
3565 because the COPY output format was improved from the 1.02 release.
3566 _________________________________________________________________
3572 Fix problems with pg_dump for inheritance, sequences, archive tables(Bruce)
3573 Fix compile errors on overflow due to shifts, unsigned, and bad prototypes
3574 from Solaris(Diab Jerius)
3575 Fix bugs in geometric line arithmetic (bad intersection calculations)(Thomas)
3576 Check for geometric intersections at endpoints to avoid rounding ugliness(Thoma
3578 Catch non-functional delete attempts(Vadim)
3579 Change time function names to be more consistent(Michael Reifenberg)
3580 Check for zero divides(Michael Reifenberg)
3581 Fix very old bug which made tuples changed/inserted by a commnd
3582 visible to the command itself (so we had multiple update of
3583 updated tuples, etc)(Vadim)
3584 Fix for SELECT null, 'fail' FROM pg_am (Patrick)
3585 SELECT NULL as EMPTY_FIELD now allowed(Patrick)
3586 Remove un-needed signal stuff from contrib/pginterface
3587 Fix OR (where x != 1 or x isnull didn't return tuples with x NULL) (Vadim)
3588 Fix time_cmp function (Vadim)
3589 Fix handling of functions with non-attribute first argument in
3590 WHERE clauses (Vadim)
3591 Fix GROUP BY when order of entries is different from order
3592 in target list (Vadim)
3593 Fix pg_dump for aggregates without sfunc1 (Vadim)
3597 Default genetic optimizer GEQO parameter is now 8(Bruce)
3598 Allow use parameters in target list having aggregates in functions(Vadim)
3599 Added JDBC driver as an interface(Adrian & Peter)
3601 Return number of tuples inserted/affected by INSERT/UPDATE/DELETE etc.(Vadim)
3602 Triggers implemented with CREATE TRIGGER (SQL3)(Vadim)
3603 SPI (Server Programming Interface) allows execution of queries inside
3605 NOT NULL implemented (SQL92)(Robson Paniago de Miranda)
3606 Include reserved words for string handling, outer joins, and unions(Thomas)
3607 Implement extended comments ("/* ... */") using exclusive states(Thomas)
3608 Add "//" single-line comments(Bruce)
3609 Remove some restrictions on characters in operator names(Thomas)
3610 DEFAULT and CONSTRAINT for tables implemented (SQL92)(Vadim & Thomas)
3611 Add text concatenation operator and function (SQL92)(Thomas)
3612 Support WITH TIME ZONE syntax (SQL92)(Thomas)
3613 Support INTERVAL unit TO unit syntax (SQL92)(Thomas)
3614 Define types DOUBLE PRECISION, INTERVAL, CHARACTER,
3615 and CHARACTER VARYING (SQL92)(Thomas)
3616 Define type FLOAT(p) and rudimentary DECIMAL(p,s), NUMERIC(p,s) (SQL92)(Thomas)
3617 Define EXTRACT(), POSITION(), SUBSTRING(), and TRIM() (SQL92)(Thomas)
3618 Define CURRENT_DATE, CURRENT_TIME, CURRENT_TIMESTAMP (SQL92)(Thomas)
3619 Add syntax and warnings for UNION, HAVING, INNER and OUTER JOIN (SQL92)(Thomas)
3620 Add more reserved words, mostly for SQL92 compliance(Thomas)
3621 Allow hh:mm:ss time entry for timespan/reltime types(Thomas)
3622 Add center() routines for lseg, path, polygon(Thomas)
3623 Add distance() routines for circle-polygon, polygon-polygon(Thomas)
3624 Check explicitly for points and polygons contained within polygons
3625 using an axis-crossing algorithm(Thomas)
3626 Add routine to convert circle-box(Thomas)
3627 Merge conflicting operators for different geometric data types(Thomas)
3628 Replace distance operator "<===>" with "<->"(Thomas)
3629 Replace "above" operator "!^" with ">^" and "below" operator "!|" with "<^"(Tho
3631 Add routines for text trimming on both ends, substring, and string position(Tho
3633 Added conversion routines circle(box) and poly(circle)(Thomas)
3634 Allow internal sorts to be stored in memory rather than in files(Bruce & Vadim)
3635 Allow functions and operators on internally-identical types to succeed(Bruce)
3636 Speed up backend start-up after profiling analysis(Bruce)
3637 Inline frequently called functions for performance(Bruce)
3638 Reduce open() calls(Bruce)
3639 psql: Add PAGER for \h and \?,\C fix
3640 Fix for psql pager when no tty(Bruce)
3641 New entab utility(Bruce)
3642 General trigger functions for referential integrity (Vadim)
3643 General trigger functions for time travel (Vadim)
3644 General trigger functions for AUTOINCREMENT/IDENTITY feature (Vadim)
3645 MOVE implementation (Vadim)
3649 HP-UX 10 patches (Vladimir Turin)
3650 Added SCO support, (Daniel Harris)
3651 MkLinux patches (Tatsuo Ishii)
3652 Change geometric box terminology from "length" to "width"(Thomas)
3653 Deprecate temporary unstored slope fields in geometric code(Thomas)
3654 Remove restart instructions from INSTALL(Bruce)
3655 Look in /usr/ucb first for install(Bruce)
3656 Fix c++ copy example code(Thomas)
3657 Add -o to psql manual page(Bruce)
3658 Prevent relname unallocated string length from being copied into database(Bruce
3660 Cleanup for NAMEDATALEN use(Bruce)
3661 Fix pg_proc names over 15 chars in output(Bruce)
3662 Add strNcpy() function(Bruce)
3663 remove some (void) casts that are unnecessary(Bruce)
3664 new interfaces directory(Marc)
3665 Replace fopen() calls with calls to fd.c functions(Bruce)
3666 Make functions static where possible(Bruce)
3667 enclose unused functions in #ifdef NOT_USED(Bruce)
3668 Remove call to difftime() in timestamp support to fix SunOS(Bruce & Thomas)
3669 Changes for Digital Unix
3670 Portability fix for pg_dumpall(Bruce)
3671 Rename pg_attribute.attnvals to attdispersion(Bruce)
3672 "intro/unix" manual page now "pgintro"(Bruce)
3673 "built-in" manual page now "pgbuiltin"(Bruce)
3674 "drop" manual page now "drop_table"(Bruce)
3675 Add "create_trigger", "drop_trigger" manual pages(Thomas)
3676 Add constraints regression test(Vadim & Thomas)
3677 Add comments syntax regression test(Thomas)
3678 Add PGINDENT and support program(Bruce)
3679 Massive commit to run PGINDENT on all *.c and *.h files(Bruce)
3680 Files moved to /src/tools directory(Bruce)
3681 SPI and Trigger programming guides (Vadim & D'Arcy)
3682 _________________________________________________________________
3686 Release date: 1997-07-22
3687 _________________________________________________________________
3689 Migration from version 6.1 to version 6.1.1
3691 This is a minor bug-fix release. A dump/reload is not required from
3692 version 6.1, but is required from any release prior to 6.1. Refer to
3693 the release notes for 6.1 for more details.
3694 _________________________________________________________________
3698 fix for SET with options (Thomas)
3699 allow pg_dump/pg_dumpall to preserve ownership of all tables/objects(Bruce)
3700 new psql \connect option allows changing usernames without changing databases
3701 fix for initdb --debug option(Yoshihiko Ichikawa))
3702 lextest cleanup(Bruce)
3704 fix date/time month boundary arithmetic(Thomas)
3705 fix timezone daylight handling for some ports(Thomas, Bruce, Tatsuo)
3706 timestamp overhauled to use standard functions(Thomas)
3707 other code cleanup in date/time routines(Thomas)
3708 psql's \d now case-insensitive(Bruce)
3709 psql's backslash commands can now have trailing semicolon(Bruce)
3710 fix memory leak in psql when using \g(Bruce)
3711 major fix for endian handling of communication to server(Thomas, Tatsuo)
3712 Fix for Solaris assembler and include files(Yoshihiko Ichikawa)
3713 allow underscores in usernames(Bruce)
3714 pg_dumpall now returns proper status, portability fix(Bruce)
3716 _________________________________________________________________
3720 Release date: 1997-06-08
3722 The regression tests have been adapted and extensively modified for
3723 the 6.1 release of PostgreSQL.
3725 Three new data types (datetime, timespan, and circle) have been added
3726 to the native set of PostgreSQL types. Points, boxes, paths, and
3727 polygons have had their output formats made consistent across the data
3728 types. The polygon output in misc.out has only been spot-checked for
3729 correctness relative to the original regression output.
3731 PostgreSQL 6.1 introduces a new, alternate optimizer which uses
3732 genetic algorithms. These algorithms introduce a random behavior in
3733 the ordering of query results when the query contains multiple
3734 qualifiers or multiple tables (giving the optimizer a choice on order
3735 of evaluation). Several regression tests have been modified to
3736 explicitly order the results, and hence are insensitive to optimizer
3737 choices. A few regression tests are for data types which are
3738 inherently unordered (e.g. points and time intervals) and tests
3739 involving those types are explicitly bracketed with "set geqo to
3740 'off'" and "reset geqo".
3742 The interpretation of array specifiers (the curly braces around atomic
3743 values) appears to have changed sometime after the original regression
3744 tests were generated. The current "./expected/*.out" files reflect
3745 this new interpretation, which may not be correct!
3747 The float8 regression test fails on at least some platforms. This is
3748 due to differences in implementations of pow() and exp() and the
3749 signaling mechanisms used for overflow and underflow conditions.
3751 The "random" results in the random test should cause the "random" test
3752 to be "failed", since the regression tests are evaluated using a
3753 simple diff. However, "random" does not seem to produce random results
3754 on my test machine (Linux/gcc/i686).
3755 _________________________________________________________________
3757 Migration to version 6.1
3759 This migration requires a complete dump of the 6.0 database and a
3760 restore of the database in 6.1.
3762 Those migrating from earlier 1.* releases should first upgrade to 1.09
3763 because the COPY output format was improved from the 1.02 release.
3764 _________________________________________________________________
3770 packet length checking in library routines
3771 lock manager priority patch
3772 check for under/over flow of float8(Bruce)
3773 multitable join fix(Vadim)
3774 SIGPIPE crash fix(Darren)
3775 large object fixes(Sven)
3776 allow btree indexes to handle NULLs(Vadim)
3777 timezone fixes(D'Arcy)
3778 select SUM(x) can return NULL on no rows(Thomas)
3779 internal optimizer, executor bug fixes(Vadim)
3780 fix problem where inner loop in < or <= has no rows(Vadim)
3781 prevent re-commuting join index clauses(Vadim)
3782 fix join clauses for multiple tables(Vadim)
3783 fix hash, hashjoin for arrays(Vadim)
3784 fix btree for abstime type(Vadim)
3785 large object fixes(Raymond)
3786 fix buffer leak in hash indexes (Vadim)
3787 fix rtree for use in inner scan (Vadim)
3788 fix gist for use in inner scan, cleanups (Vadim, Andrea)
3789 avoid unnecessary local buffers allocation (Vadim, Massimo)
3790 fix local buffers leak in transaction aborts (Vadim)
3791 fix file manager memmory leaks, cleanups (Vadim, Massimo)
3792 fix storage manager memmory leaks (Vadim)
3793 fix btree duplicates handling (Vadim)
3794 fix deleted tuples re-incarnation caused by vacuum (Vadim)
3795 fix SELECT varchar()/char() INTO TABLE made zero-length fields(Bruce)
3796 many psql, pg_dump, and libpq memory leaks fixed using Purify (Igor)
3800 attribute optimization statistics(Bruce)
3801 much faster new btree bulk load code(Paul)
3802 BTREE UNIQUE added to bulk load code(Vadim)
3803 new lock debug code(Massimo)
3804 massive changes to libpg++(Leo)
3805 new GEQO optimizer speeds table multitable optimization(Martin)
3806 new WARN message for non-unique insert into unique key(Marc)
3807 update x=-3, no spaces, now valid(Bruce)
3808 remove case-sensitive identifier handling(Bruce,Thomas,Dan)
3809 debug backend now pretty-prints tree(Darren)
3810 new Oracle character functions(Edmund)
3811 new plaintext password functions(Dan)
3812 no such class or insufficient privilege changed to distinct messages(Dan)
3813 new ANSI timestamp function(Dan)
3814 new ANSI Time and Date types (Thomas)
3815 move large chunks of data in backend(Martin)
3816 multicolumn btree indexes(Vadim)
3817 new SET var TO value command(Martin)
3818 update transaction status on reads(Dan)
3819 new locale settings for character types(Oleg)
3820 new SEQUENCE serial number generator(Vadim)
3821 GROUP BY function now possible(Vadim)
3822 re-organize regression test(Thomas,Marc)
3823 new optimizer operation weights(Vadim)
3824 new psql \z grant/permit option(Marc)
3825 new MONEY data type(D'Arcy,Thomas)
3826 tcp socket communication speed improved(Vadim)
3827 new VACUUM option for attribute statistics, and for certain columns (Vadim)
3828 many geometric type improvements(Thomas,Keith)
3829 additional regression tests(Thomas)
3830 new datestyle variable(Thomas,Vadim,Martin)
3831 more comparison operators for sorting types(Thomas)
3832 new conversion functions(Thomas)
3833 new more compact btree format(Vadim)
3834 allow pg_dumpall to preserve database ownership(Bruce)
3835 new SET GEQO=# and R_PLANS variable(Vadim)
3836 old (!GEQO) optimizer can use right-sided plans (Vadim)
3837 typechecking improvement in SQL parser(Bruce)
3838 new SET, SHOW, RESET commands(Thomas,Vadim)
3839 new \connect database USER option
3840 new destroydb -i option (Igor)
3841 new \dt and \di psql commands (Darren)
3842 SELECT "\n" now escapes newline (A. Duursma)
3843 new geometry conversion functions from old format (Thomas)
3847 new configuration script(Marc)
3848 readline configuration option added(Marc)
3849 OS-specific configuration options removed(Marc)
3850 new OS-specific template files(Marc)
3851 no more need to edit Makefile.global(Marc)
3852 re-arrange include files(Marc)
3853 nextstep patches (Gregor Hoffleit)
3854 removed WIN32-specific code(Bruce)
3855 removed postmaster -e option, now only postgres -e option (Bruce)
3856 merge duplicate library code in front/backends(Martin)
3857 now works with eBones, international Kerberos(Jun)
3858 more shared library support
3859 c++ include file cleanup(Bruce)
3860 warn about buggy flex(Bruce)
3861 DG/UX, Ultrix, IRIX, AIX portability fixes
3862 _________________________________________________________________
3866 Release date: 1997-01-29
3868 A dump/restore is required for those wishing to migrate data from
3869 previous releases of PostgreSQL.
3870 _________________________________________________________________
3872 Migration from version 1.09 to version 6.0
3874 This migration requires a complete dump of the 1.09 database and a
3875 restore of the database in 6.0.
3876 _________________________________________________________________
3878 Migration from pre-1.09 to version 6.0
3880 Those migrating from earlier 1.* releases should first upgrade to 1.09
3881 because the COPY output format was improved from the 1.02 release.
3882 _________________________________________________________________
3888 ALTER TABLE bug - running postgress process needs to re-read table definition
3889 Allow vacuum to be run on one table or entire database(Bruce)
3891 Fix array over-runs of memory writes(Kurt)
3892 Fix elusive btree range/non-range bug(Dan)
3893 Fix for hash indexes on some types like time and date
3894 Fix for pg_log size explosion
3895 Fix permissions on lo_export()(Bruce)
3896 Fix unitialized reads of memory(Kurt)
3897 Fixed ALTER TABLE ... char(3) bug(Bruce)
3898 Fixed a few small memory leaks
3899 Fixed EXPLAIN handling of options and changed full_path option name
3900 Fixed output of group acl permissions
3901 Memory leaks (hunt and destroy with tools like Purify(Kurt)
3902 Minor improvements to rules system
3904 New asserts for run-checking
3905 Overhauled parser/analyze code to properly report errors and increase speed
3906 Pg_dump -d now handles NULL's properly(Bruce)
3907 Prevent SELECT NULL from crashing server (Bruce)
3908 Properly report errors when INSERT ... SELECT columns did not match
3909 Properly report errors when insert column names were not correct
3910 Psql \g filename now works(Bruce)
3911 Psql fixed problem with multiple statements on one line with multiple outputs
3912 Removed duplicate system OIDs
3913 SELECT * INTO TABLE . GROUP/ORDER BY gives unlink error if table exists(Bruce)
3914 Several fixes for queries that crashed the backend
3915 Starting quote in insert string errors(Bruce)
3916 Submitting an empty query now returns empty status, not just " " query(Bruce)
3920 Add EXPLAIN manual page(Bruce)
3921 Add UNIQUE index capability(Dan)
3922 Add hostname/user level access control rather than just hostname and user
3923 Add synonym of != for <>(Bruce)
3924 Allow "select oid,* from table"
3925 Allow BY,ORDER BY to specify columns by number, or by non-alias table.column(Br
3927 Allow COPY from the frontend(Bryan)
3928 Allow GROUP BY to use alias column name(Bruce)
3929 Allow actual compression, not just reuse on the same page(Vadim)
3930 Allow installation-configuration option to auto-add all local users(Bryan)
3931 Allow libpq to distinguish between text value '' and null(Bruce)
3932 Allow non-postgres users with createdb privs to destroydb's
3933 Allow restriction on who can create C functions(Bryan)
3934 Allow restriction on who can do backend COPY(Bryan)
3935 Can shrink tables, pg_time and pg_log(Vadim & Erich)
3936 Change debug level 2 to print queries only, changed debug heading layout(Bruce)
3937 Change default decimal constant representation from float4 to float8(Bruce)
3938 European date format now set when postmaster is started
3939 Execute lowercase function names if not found with exact case
3940 Fixes for aggregate/GROUP processing, allow 'select sum(func(x),sum(x+y) from z
3942 Gist now included in the distrubution(Marc)
3943 Idend authentication of local users(Bryan)
3944 Implement BETWEEN qualifier(Bruce)
3945 Implement IN qualifier(Bruce)
3946 Libpq has PQgetisnull()(Bruce)
3947 Libpq++ improvements
3948 New options to initdb(Bryan)
3949 Pg_dump allow dump of OIDs(Bruce)
3950 Pg_dump create indexes after tables are loaded for speed(Bruce)
3951 Pg_dumpall dumps all databases, and the user table
3952 Pginterface additions for NULL values(Bruce)
3953 Prevent postmaster from being run as root
3954 Psql \h and \? is now readable(Bruce)
3955 Psql allow backslashed, semicolons anywhere on the line(Bruce)
3956 Psql changed command prompt for lines in query or in quotes(Bruce)
3957 Psql char(3) now displays as (bp)char in \d output(Bruce)
3958 Psql return code now more accurate(Bryan?)
3959 Psql updated help syntax(Bruce)
3960 Re-visit and fix vacuum(Vadim)
3961 Reduce size of regression diffs, remove timezone name difference(Bruce)
3962 Remove compile-time parameters to enable binary distributions(Bryan)
3963 Reverse meaning of HBA masks(Bryan)
3964 Secure Authentication of local users(Bryan)
3965 Speed up vacuum(Vadim)
3966 Vacuum now had VERBOSE option(Bruce)
3970 All functions now have prototypes that are compared against the calls
3971 Allow asserts to be disabled easly from Makefile.global(Bruce)
3972 Change oid constants used in code to #define names
3973 Decoupled sparc and solaris defines(Kurt)
3974 Gcc -Wall compiles cleanly with warnings only from unfixable constructs
3975 Major include file reorganization/reduction(Marc)
3976 Make now stops on compile failure(Bryan)
3977 Makefile restructuring(Bryan, Marc)
3978 Merge bsdi_2_1 to bsdi(Bruce)
3979 Monitor program removed
3980 Name change from Postgres95 to PostgreSQL
3981 New config.h file(Marc, Bryan)
3982 PG_VERSION now set to 6.0 and used by postmaster
3983 Portability additions, including Ultrix, DG/UX, AIX, and Solaris
3984 Reduced the number of #define's, centeralized #define's
3985 Remove duplicate OIDS in system tables(Dan)
3986 Remove duplicate system catalog info or report mismatches(Dan)
3987 Removed many os-specific #define's
3988 Restructured object file generation/location(Bryan, Marc)
3989 Restructured port-specific file locations(Bryan, Marc)
3990 Unused/uninialized variables corrected
3991 _________________________________________________________________
3995 Release date: 1996-11-04
3997 Sorry, we didn't keep track of changes from 1.02 to 1.09. Some of the
3998 changes listed in 6.0 were actually included in the 1.02.1 to 1.09
4000 _________________________________________________________________
4004 Release date: 1996-08-01
4005 _________________________________________________________________
4007 Migration from version 1.02 to version 1.02.1
4009 Here is a new migration file for 1.02.1. It includes the 'copy' change
4010 and a script to convert old ASCII files.
4012 Note: The following notes are for the benefit of users who want to
4013 migrate databases from Postgres95 1.01 and 1.02 to Postgres95
4016 If you are starting afresh with Postgres95 1.02.1 and do not need
4017 to migrate old databases, you do not need to read any further.
4019 In order to upgrade older Postgres95 version 1.01 or 1.02 databases to
4020 version 1.02.1, the following steps are required:
4021 1. Start up a new 1.02.1 postmaster
4022 2. Add the new built-in functions and operators of 1.02.1 to 1.01 or
4023 1.02 databases. This is done by running the new 1.02.1 server
4024 against your own 1.01 or 1.02 database and applying the queries
4025 attached at the end of the file. This can be done easily through
4026 "psql". If your 1.01 or 1.02 database is named testdb and you have
4027 cut the commands from the end of this file and saved them in
4029 % psql testdb -f addfunc.sql
4030 Those upgrading 1.02 databases will get a warning when executing
4031 the last two statements in the file because they are already
4032 present in 1.02. This is not a cause for concern.
4033 _________________________________________________________________
4035 Dump/Reload Procedure
4037 If you are trying to reload a pg_dump or text-mode, copy tablename to
4038 stdout generated with a previous version, you will need to run the
4039 attached "sed" script on the ASCII file before loading it into the
4040 database. The old format used '.' as end-of-data, while '\.' is now
4041 the end-of-data marker. Also, empty strings are now loaded in as ''
4042 rather than NULL. See the copy manual page for full details.
4043 sed 's/^\.$/\\./g' <in_file >out_file
4045 If you are loading an older binary copy or non-stdout copy, there is
4046 no end-of-data character, and hence no conversion necessary.
4047 -- following lines added by agc to reflect the case-insensitive
4048 -- regexp searching for varchar (in 1.02), and bpchar (in 1.02.1)
4049 create operator ~* (leftarg = bpchar, rightarg = text, procedure = texticregexe
4051 create operator !~* (leftarg = bpchar, rightarg = text, procedure = texticregex
4053 create operator ~* (leftarg = varchar, rightarg = text, procedure = texticregex
4055 create operator !~* (leftarg = varchar, rightarg = text, procedure = texticrege
4057 _________________________________________________________________
4061 Source code maintenance and development
4062 * worldwide team of volunteers
4063 * the source tree now in CVS at ftp.ki.net
4066 * psql (and underlying libpq library) now has many more options for
4067 formatting output, including HTML
4068 * pg_dump now output the schema and/or the data, with many fixes to
4069 enhance completeness.
4070 * psql used in place of monitor in administration shell scripts.
4071 monitor to be deprecated in next release.
4072 * date/time functions enhanced
4073 * NULL insert/update/comparison fixed/enhanced
4074 * TCL/TK lib and shell fixed to work with both tck7.4/tk4.0 and tcl7.5/tk4.1
4076 Bug Fixes (almost too numerous to mention)
4078 * storage management
4079 * check for NULL pointer before dereferencing
4083 * added SolarisX86 port
4084 * added BSD/OS 2.1 port
4086 _________________________________________________________________
4090 Release date: 1996-02-23
4091 _________________________________________________________________
4093 Migration from version 1.0 to version 1.01
4095 The following notes are for the benefit of users who want to migrate
4096 databases from Postgres95 1.0 to Postgres95 1.01.
4098 If you are starting afresh with Postgres95 1.01 and do not need to
4099 migrate old databases, you do not need to read any further.
4101 In order to Postgres95 version 1.01 with databases created with
4102 Postgres95 version 1.0, the following steps are required:
4103 1. Set the definition of NAMEDATALEN in "src/Makefile.global" to 16
4104 and OIDNAMELEN to 20.
4105 2. Decide whether you want to use Host based authentication.
4106 a. If you do, you must create a file name pg_hba in your
4107 top-level data directory (typically the value of your
4108 $PGDATA). "src/libpq/pg_hba" shows an example syntax.
4109 b. If you do not want host-based authentication, you can comment
4112 in "src/Makefile.global"
4113 Note that host-based authentication is turned on by default,
4114 and if you do not take steps A or B above, the out-of-the-box
4115 1.01 will not allow you to connect to 1.0 databases.
4116 3. Compile and install 1.01, but DO NOT do the "initdb" step.
4117 4. Before doing anything else, terminate your 1.0 postmaster, and
4118 backup your existing $PGDATA directory.
4119 5. Set your PGDATA environment variable to your 1.0 databases, but
4120 set up path up so that 1.01 binaries are being used.
4121 6. Modify the file "$PGDATA/PG_VERSION" from 5.0 to 5.1
4122 7. Start up a new 1.01 postmaster
4123 8. Add the new built-in functions and operators of 1.01 to 1.0
4124 databases. This is done by running the new 1.01 server against
4125 your own 1.0 database and applying the queries attached and saving
4126 in the file 1.0_to_1.01.sql. This can be done easily through
4127 "psql". If your 1.0 database is name testdb:
4128 % psql testdb -f 1.0_to_1.01.sql
4129 and then execute the following commands (cut and paste from here):
4130 -- add builtin functions that are new to 1.01
4132 create function int4eqoid (int4, oid) returns bool as 'foo'
4133 language 'internal';
4134 create function oideqint4 (oid, int4) returns bool as 'foo'
4135 language 'internal';
4136 create function char2icregexeq (char2, text) returns bool as 'foo'
4137 language 'internal';
4138 create function char2icregexne (char2, text) returns bool as 'foo'
4139 language 'internal';
4140 create function char4icregexeq (char4, text) returns bool as 'foo'
4141 language 'internal';
4142 create function char4icregexne (char4, text) returns bool as 'foo'
4143 language 'internal';
4144 create function char8icregexeq (char8, text) returns bool as 'foo'
4145 language 'internal';
4146 create function char8icregexne (char8, text) returns bool as 'foo'
4147 language 'internal';
4148 create function char16icregexeq (char16, text) returns bool as 'foo'
4149 language 'internal';
4150 create function char16icregexne (char16, text) returns bool as 'foo'
4151 language 'internal';
4152 create function texticregexeq (text, text) returns bool as 'foo'
4153 language 'internal';
4154 create function texticregexne (text, text) returns bool as 'foo'
4155 language 'internal';
4157 -- add builtin functions that are new to 1.01
4159 create operator = (leftarg = int4, rightarg = oid, procedure = int4eqoid);
4160 create operator = (leftarg = oid, rightarg = int4, procedure = oideqint4);
4161 create operator ~* (leftarg = char2, rightarg = text, procedure = char2icregexe
4163 create operator !~* (leftarg = char2, rightarg = text, procedure = char2icregex
4165 create operator ~* (leftarg = char4, rightarg = text, procedure = char4icregexe
4167 create operator !~* (leftarg = char4, rightarg = text, procedure = char4icregex
4169 create operator ~* (leftarg = char8, rightarg = text, procedure = char8icregexe
4171 create operator !~* (leftarg = char8, rightarg = text, procedure = char8icregex
4173 create operator ~* (leftarg = char16, rightarg = text, procedure = char16icrege
4175 create operator !~* (leftarg = char16, rightarg = text, procedure = char16icreg
4177 create operator ~* (leftarg = text, rightarg = text, procedure = texticregexeq)
4179 create operator !~* (leftarg = text, rightarg = text, procedure = texticregexne
4181 _________________________________________________________________
4186 * 1.01 is backwards compatible with 1.0 database provided the user
4187 follow the steps outlined in the MIGRATION_from_1.0_to_1.01 file.
4188 If those steps are not taken, 1.01 is not compatible with 1.0 database.
4191 * added PQdisplayTuples() to libpq and changed monitor and psql to use it
4192 * added NeXT port (requires SysVIPC implementation)
4193 * added CAST .. AS ... syntax
4194 * added ASC and DESC keywords
4195 * added 'internal' as a possible language for CREATE FUNCTION
4196 internal functions are C functions which have been statically linked
4197 into the postgres backend.
4198 * a new type "name" has been added for system identifiers (table names,
4199 attribute names, etc.) This replaces the old char16 type. The
4200 of name is set by the NAMEDATALEN #define in src/Makefile.global
4201 * a readable reference manual that describes the query language.
4202 * added host-based access control. A configuration file ($PGDATA/pg_hba)
4203 is used to hold the configuration data. If host-based access control
4204 is not desired, comment out HBA=1 in src/Makefile.global.
4205 * changed regex handling to be uniform use of Henry Spencer's regex code
4206 regardless of platform. The regex code is included in the distribution
4207 * added functions and operators for case-insensitive regular expressions.
4208 The operators are ~* and !~*.
4209 * pg_dump uses COPY instead of SELECT loop for better performance
4212 * fixed an optimizer bug that was causing core dumps when
4213 functions calls were used in comparisons in the WHERE clause
4214 * changed all uses of getuid to geteuid so that effective uids are used
4215 * psql now returns non-zero status on errors when using -c
4216 * applied public patches 1-14
4217 _________________________________________________________________
4221 Release date: 1995-09-05
4222 _________________________________________________________________
4227 * The copyright of Postgres 1.0 has been loosened to be freely modifiable
4228 and modifiable for any purpose. Please read the COPYRIGHT file.
4229 Thanks to Professor Michael Stonebraker for making this possible.
4232 * date formats have to be MM-DD-YYYY (or DD-MM-YYYY if you're using
4233 EUROPEAN STYLE). This follows SQL-92 specs.
4234 * "delimiters" is now a keyword
4237 * sql LIKE syntax has been added
4238 * copy command now takes an optional USING DELIMITER specification.
4239 delimiters can be any single-character string.
4240 * IRIX 5.3 port has been added.
4241 Thanks to Paul Walmsley and others.
4242 * updated pg_dump to work with new libpq
4243 * \d has been added psql
4244 Thanks to Keith Parks
4245 * regexp performance for architectures that use POSIX regex has been
4246 improved due to caching of precompiled patterns.
4247 Thanks to Alistair Crooks
4248 * a new version of libpq++
4249 Thanks to William Wanders
4252 * arbitrary userids can be specified in the createuser script
4253 * \c to connect to other databases in psql now works.
4254 * bad pg_proc entry for float4inc() is fixed
4255 * users with usecreatedb field set can now create databases without
4256 having to be usesuper
4257 * remove access control entries when the entry no longer has any
4259 * fixed non-portable datetimes implementation
4260 * added kerberos flags to the src/backend/Makefile
4261 * libpq now works with kerberos
4262 * typographic errors in the user manual have been corrected.
4263 * btrees with multiple index never worked, now we tell you they don't
4264 work when you try to use them
4265 _________________________________________________________________
4267 Postgres95 Release 0.03
4269 Release date: 1995-07-21
4270 _________________________________________________________________
4274 Incompatible changes:
4275 * BETA-0.3 IS INCOMPATIBLE WITH DATABASES CREATED WITH PREVIOUS VERSIONS
4276 (due to system catalog changes and indexing structure changes).
4277 * double-quote (") is deprecated as a quoting character for string literals;
4278 you need to convert them to single quotes (').
4279 * name of aggregates (eg. int4sum) are renamed in accordance with the
4280 SQL standard (eg. sum).
4281 * CHANGE ACL syntax is replaced by GRANT/REVOKE syntax.
4282 * float literals (eg. 3.14) are now of type float4 (instead of float8 in
4283 previous releases); you might have to do typecasting if you depend on it
4284 being of type float8. If you neglect to do the typecasting and you assign
4285 a float literal to a field of type float8, you may get incorrect values
4287 * LIBPQ has been totally revamped so that frontend applications
4288 can connect to multiple backends
4289 * the usesysid field in pg_user has been changed from int2 to int4 to
4290 allow wider range of Unix user ids.
4291 * the netbsd/freebsd/bsd o/s ports have been consolidated into a
4292 single BSD44_derived port. (thanks to Alistair Crooks)
4294 SQL standard-compliance (the following details changes that makes postgres95
4295 more compliant to the SQL-92 standard):
4296 * the following SQL types are now built-in: smallint, int(eger), float, real,
4297 char(N), varchar(N), date and time.
4299 The following are aliases to existing postgres types:
4301 integer, int -> int4
4302 float, real -> float4
4303 char(N) and varchar(N) are implemented as truncated text types. In
4304 addition, char(N) does blank-padding.
4305 * single-quote (') is used for quoting string literals; '' (in addition to
4306 \') is supported as means of inserting a single quote in a string
4307 * SQL standard aggregate names (MAX, MIN, AVG, SUM, COUNT) are used
4308 (Also, aggregates can now be overloaded, i.e. you can define your
4309 own MAX aggregate to take in a user-defined type.)
4310 * CHANGE ACL removed. GRANT/REVOKE syntax added.
4311 - Privileges can be given to a group using the "GROUP" keyword.
4313 GRANT SELECT ON foobar TO GROUP my_group;
4314 The keyword 'PUBLIC' is also supported to mean all users.
4316 Privileges can only be granted or revoked to one user or group
4319 "WITH GRANT OPTION" is not supported. Only class owners can change
4321 - The default access control is to to grant users readonly access.
4322 You must explicitly grant insert/update access to users. To change
4323 this, modify the line in
4324 src/backend/utils/acl.h
4325 that defines ACL_WORLD_DEFAULT
4328 * the bug where aggregates of empty tables were not run has been fixed. Now,
4329 aggregates run on empty tables will return the initial conditions of the
4330 aggregates. Thus, COUNT of an empty table will now properly return 0.
4331 MAX/MIN of an empty table will return a tuple of value NULL.
4332 * allow the use of \; inside the monitor
4333 * the LISTEN/NOTIFY asynchronous notification mechanism now work
4334 * NOTIFY in rule action bodies now work
4335 * hash indexes work, and access methods in general should perform better.
4336 creation of large btree indexes should be much faster. (thanks to Paul
4339 Other changes and enhancements:
4340 * addition of an EXPLAIN statement used for explaining the query execution
4341 plan (eg. "EXPLAIN SELECT * FROM EMP" prints out the execution plan for
4343 * WARN and NOTICE messages no longer have timestamps on them. To turn on
4344 timestamps of error messages, uncomment the line in
4345 src/backend/utils/elog.h:
4346 /* define ELOG_TIMESTAMPS */
4347 * On an access control violation, the message
4348 "Either no such class or insufficient privilege"
4349 will be given. This is the same message that is returned when
4350 a class is not found. This dissuades non-privileged users from
4351 guessing the existence of privileged classes.
4352 * some additional system catalog changes have been made that are not
4353 visible to the user.
4356 * The -oid option has been added to the "pg_result" tcl command.
4357 pg_result -oid returns oid of the last tuple inserted. If the
4358 last command was not an INSERT, then pg_result -oid returns "".
4359 * the large object interface is available as pg_lo* tcl commands:
4360 pg_lo_open, pg_lo_close, pg_lo_creat, etc.
4362 Portability enhancements and New Ports:
4363 * flex/lex problems have been cleared up. Now, you should be able to use
4364 flex instead of lex on any platforms. We no longer make assumptions of
4365 what lexer you use based on the platform you use.
4366 * The Linux-ELF port is now supported. Various configuration have been
4367 tested: The following configuration is known to work:
4368 kernel 1.2.10, gcc 2.6.3, libc 4.7.2, flex 2.5.2, bison 1.24
4369 with everything in ELF format,
4372 * ipcclean added to the distribution
4373 ipcclean usually does not need to be run, but if your backend crashes
4374 and leaves shared memory segments hanging around, ipcclean will
4375 clean them up for you.
4378 * the user manual has been revised and libpq documentation added.
4379 _________________________________________________________________
4381 Postgres95 Release 0.02
4383 Release date: 1995-05-25
4384 _________________________________________________________________
4388 Incompatible changes:
4389 * The SQL statement for creating a database is 'CREATE DATABASE' instead
4390 of 'CREATEDB'. Similarly, dropping a database is 'DROP DATABASE' instead
4391 of 'DESTROYDB'. However, the names of the executables 'createdb' and
4392 'destroydb' remain the same.
4395 * pgperl - a Perl (4.036) interface to Postgres95
4396 * pg_dump - a utility for dumping out a postgres database into a
4397 script file containing query commands. The script files are in a ASCII
4398 format and can be used to reconstruct the database, even on other
4399 machines and other architectures. (Also good for converting
4400 a Postgres 4.2 database to Postgres95 database.)
4402 The following ports have been incorporated into postgres95-beta-0.02:
4403 * the NetBSD port by Alistair Crooks
4404 * the AIX port by Mike Tung
4405 * the Windows NT port by Jon Forrest (more stuff but not done yet)
4406 * the Linux ELF port by Brian Gallew
4408 The following bugs have been fixed in postgres95-beta-0.02:
4409 * new lines not escaped in COPY OUT and problem with COPY OUT when first
4411 * cannot type return to use the default user id in createuser
4412 * SELECT DISTINCT on big tables crashes
4413 * Linux installation problems
4414 * monitor doesn't allow use of 'localhost' as PGHOST
4415 * psql core dumps when doing \c or \l
4416 * the "pgtclsh" target missing from src/bin/pgtclsh/Makefile
4417 * libpgtcl has a hard-wired default port number
4418 * SELECT DISTINCT INTO TABLE hangs
4419 * CREATE TYPE doesn't accept 'variable' as the internallength
4420 * wrong result using more than 1 aggregate in a SELECT
4421 _________________________________________________________________
4423 Postgres95 Release 0.01
4425 Release date: 1995-05-01
projects / postgresql / blob