-PostgreSQL 6.5 Fri Apr 23 17:40:19 EDT 1999
-=========================================================
-
-A dump/restore is required.
-
-PLACE HOLDER
-
-PostgreSQL 6.4.2 Sat Jan 2 11:04:05 EST 1999
-=========================================================
-
-Repackaged release to fix packaging problem of 6.4.1.
-A dump/restore is NOT required for those running 6.4.*.
-
-Changes
--------
-Fix for datetime constant problem on some platforms(Thomas)
-
-
-
-PostgreSQL 6.4.1 Fri Dec 18 00:29:11 EST 1998
-=========================================================
-
-A dump/restore is NOT required for those running 6.4. Those running
-pre-6.4 require a dump/restore, or for 6.3.* users, the use of the
-pg_upgrade utility.
-
-Changes
--------
-Add pg_dump -N flag to force double quotes around identifiers. This is
- the default(Thomas)
-Fix for NOT in where clause causing crash(Bruce)
-EXPLAIN VERBOSE coredump fix(Vadim)
-Fix shared-library problems on Linux
-Fix test for table existance to allow mixed-case and whitespace in
- the table name(Thomas)
-Fix a couple of pg_dump bugs
-Configure matches template/.similar entries better(Tom)
-Change builtin function names from SPI_* to spi_*
-OR WHERE clause fix(Vadim)
-Fixes for mixed-case table names(Billy)
-contrib/linux/postgres.init.csh/sh fix(Thomas)
-libpq memory overrun fix
-SunOS fixes(Tom)
-Change exp() behavior to generate error on underflow(Thomas)
-pg_dump fixes for memory leak, inheritance constraints, layout change
-update pgaccess to 0.93
-Fix prototype for 64-bit platforms
-Multi-byte fixes(Tatsuo)
-New ecpg man page
-Fix memory overruns(Tatsuo)
-Fix for lo_import() crash(Bruce)
-Better search for install program(Tom)
-Timezone fixes(Tom)
-HPUX fixes(Tom)
-Use implicit type coersion for matching DEFAULT values(Thomas)
-Add routines to help with single-byte (internal) character type(Thomas)
-Compilation of libpq for Win32 fixes(Magnus)
-Upgrade to PyGreSQL 2.2(D'Arcy)
-
-
-
-PostgreSQL 6.4 Mon Oct 26 11:40:42 EST 1998
-=========================================================
-
-A dump/restore is required for those wishing to migrate data from
-previous releases of PostgreSQL. You may also use the new pg_upgrade
-utility to avoid a dump/reload.
-
-Bug Fixes
----------
-Fix for a tiny memory leak in PQsetdb/PQfinish(Bryan)
-Remove char2-16 data types, use char/varchar(Darren)
-Pqfn not handles a NOTICE message(Anders)
-Reduced busywaiting overhead for spinlocks with many backends (dg)
-Stuck spinlock detection (dg)
-Fix up "ISO-style" timespan decoding and encoding(Thomas)
-Fix problem with table drop after rollback of transaction(Vadim)
-Change error message and remove non-functional update message(Vadim)
-Fix for COPY array checking
-Fix for SELECT 1 UNION SELECT NULL
-Fix for buffer leaks in large object calls(Pascal)
-Change owner from oid to int4 type(Bruce)
-Fix a bug in the oracle compatibility functions btrim() ltrim() and rtrim()
-Fix for shared invalidation cache overflow(Massimo)
-Prevent file descriptor leaks in failed COPY's(Bruce)
-Fix memory leak in libpgtcl's pg_select(Constantin)
-Fix problems with username/passwords over 8 characters(Tom)
-Fix problems with handling of asynchronous NOTIFY in backend(Tom)
-Fix of many bad system table entries(Tom)
-
-Enhancements
-------------
-Upgrade ecpg and ecpglib,see src/interfaces/ecpc/ChangeLog(Michael)
-Show the index used in an EXPLAIN(Zeugswetter)
-EXPLAIN invokes rule system and shows plan(s) for rewritten queries(Jan)
-Multi-byte awareness of many data types and functions, via configure(Tatsuo)
-New configure --with-mb option(Tatsuo)
-New initdb --pgencoding option(Tatsuo)
-New createdb -E multibyte option(Tatsuo)
-Select version(); now returns PostgreSQL version(Jeroen)
-Libpq now allows asynchronous clients(Tom)
-Allow cancel from client of backend query(Tom)
-Psql now cancels query with Control-C(Tom)
-Libpq users need not issue dummy queries to get NOTIFY messages(Tom)
-NOTIFY now sends sender's PID, so you can tell whether it was your own(Tom)
-PGresult struct now includes associated error message, if any(Tom)
-Define "tz_hour" and "tz_minute" arguments to date_part()(Thomas)
-Add routines to convert between varchar and bpchar(Thomas)
-Add routines to allow sizing of varchar and bpchar into target columns(Thomas)
-Add bit flags to support timezonehour and minute in data retrieval(Thomas)
-Allow more variations on valid floating point numbers (e.g. ".1", "1e6")(Thomas)
-Fixes for unary minus parsing with leading spaces(Thomas)
-Implement TIMEZONE_HOUR, TIMEZONE_MINUTE per SQL92 specs(Thomas)
-Check for and properly ignore FOREIGN KEY column constraints(Thomas)
-Define USER as synonym for CURRENT_USER per SQL92 specs(Thomas)
-Enable HAVING clause but no fixes elsewhere yet.
-Make "char" type a synonym for "char(1)" (actually implemented as bpchar)(Thomas)
-Save string type if specified for DEFAULT clause handling(Thomas)
-Coerce operations involving different data types(Thomas)
-Allow some index use for columns of different types(Thomas)
-Add capabilities for automatic type conversion(Thomas)
-Cleanups for large objects, so file is truncated on open(Peter)
-Readline cleanups(Tom)
-Allow psql \f \ to make spaces as delimiter(Bruce)
-Pass pg_attribute.atttypmod to the frontend for column field lengths(Tom,Bruce)
-Msql compatibility library in /contrib(Aldrin)
-Remove the requirement that ORDER/GROUP BY clause identifiers be
-included in the target list(David)
-Convert columns to match columns in UNION clauses(Thomas)
-Remove fork()/exec() and only do fork()(Bruce)
-Jdbc cleanups(Peter)
-Show backend status on ps command line(only works on some platforms)(Bruce)
-Pg_hba.conf now has a sameuser option in the database field
-Make lo_unlink take oid param, not int4
-New DISABLE_COMPLEX_MACRO for compilers that can't handle our macros(Bruce)
-Libpgtcl now handles NOTIFY as a Tcl event, need not send dummy queries(Tom)
-libpgtcl cleanups(Tom)
-Add -error option to libpgtcl's pg_result command(Tom)
-New locale patch, see docs/README/locale(Oleg)
-Fix for pg_dump so CONSTRAINT and CHECK syntax is correct(ccb)
-New contrib/lo code for large object orphan removal(Peter)
-New psql command "SET CLIENT_ENCODING TO 'encoding'" for multi-bytes
-feature, see /doc/README.mb(Tatsuo)
-/contrib/noupdate code to revoke update permission on a column
-Libpq can now be compiled on win32(Magnus)
-Add PQsetdbLogin() in libpq
-New 8-byte integer type, checked by configure for OS support(Thomas)
-Better support for quoted table/column names(Thomas)
-Surround table and column names with double-quotes in pg_dump(Thomas)
-PQreset() now works with passwords(Tom)
-Handle case of GROUP BY target list column number out of range(David)
-Allow UNION in subselects
-Add auto-size to screen to \d? commands(Bruce)
-Use UNION to show all \d? results in one query(Bruce)
-Add \d? field search feature(Bruce)
-Pg_dump issues fewer \connect requests(Tom)
-Make pg_dump -z flag work better, document it in manual page(Tom)
-Add HAVING clause with full support for subselects and unions(Stephan)
-Full text indexing routines in contrib/fulltextindex(Maarten)
-Transaction ids now stored in shared memory(Vadim)
-New PGCLIENTENCODING when issuing COPY command(Tatsuo)
-Support for SQL92 syntax "SET NAMES"(Tatsuo)
-Support for LATIN2-5(Tatsuo)
-Add UNICODE regression test case(Tatsuo)
-Lock manager cleanup, new locking modes for LLL(Vadim)
-Allow index use with OR clauses(Bruce)
-Allows "SELECT NULL ORDER BY 1;"
-Explain VERBOSE prints the plan, and now pretty-prints the plan to
-the postmaster log file(Bruce)
-Add Indices display to \d command(Bruce)
-Allow GROUP BY on functions(David)
-New pg_class.relkind for large objects(Bruce)
-New way to send libpq NOTICE messages to a different location(Tom)
-New \w write command to psql(Bruce)
-New /contrib/findoidjoins scans oid columns to find join relationships(Bruce)
-Allow binary-compatible indices to be considered when checking for valid
-indices for restriction clauses containing a constant(Thomas)
-New ISBN/ISSN code in /contrib/isbn_issn
-Allow NOT LIKE, IN, NOT IN, BETWEEN, and NOT BETWEEN constraint(Thomas)
-New rewrite system fixes many problems with rules and views(Jan)
- * Rules on relations work
- * Event qualifications on insert/update/delete work
- * New OLD variable to reference CURRENT, CURRENT will be remove in future
- * Update rules can reference NEW and OLD in rule qualifications/actions
- * Insert/update/delete rules on views work
- * Multiple rule actions are now supported, surrounded by parentheses
- * Regular users can create views/rules on tables they have RULE permits
- * Rules and views inherit the permissions on the creator
- * No rules at the column level
- * No UPDATE NEW/OLD rules
- * New pg_tables, pg_indexes, pg_rules and pg_views system views
- * Only a single action on SELECT rules
- * Total rewrite overhaul, perhaps for 6.5
- * handle subselects
- * handle aggregates on views
- * handle insert into select from view works
-System indexes are now multi-key(Bruce)
-Oidint2, oidint4, and oidname types are removed(Bruce)
-Use system cache for more system table lookups(Bruce)
-New backend programming language PL/pgSQL in backend/pl(Jan)
-New SERIAL data type, auto-creates sequence/index(Thomas)
-Enable assert checking without a recompile(Massimo)
-User lock enhancements(Massimo)
-New setval() command to set sequence value(Massimo)
-Auto-remove unix socket file on startup if no postmaster running(Massimo)
-Conditional trace package(Massimo)
-New UNLISTEN command(Massimo)
-Psql and libpq now compile under win32 using win32.mak(Magnus)
-Lo_read no longer stores trailing NULL(Bruce)
-Identifiers are now truncated to 31 characters internally(Bruce)
-Createuser options now availble on the command line
-Code for 64-bit integer supported added, configure tested, int8 type(Thomas)
-Prevent file descriptor leaf from failed COPY(Bruce)
-New pg_upgrade command(Bruce)
-Updated /contrib directories(Massimo)
-New CREATE TABLE DEFAULT VALUES statement available(Thomas)
-New INSERT INTO TABLE DEFAULT VALUES statement available(Thomas)
-New DECLARE and FETCH feature(Thomas)
-libpq's internal structures now not exported(Tom)
-Allow up to 8 key indexes(Bruce)
-Remove ARCHIVE keyword, that is no longer used(Thomas)
-pg_dump -n flag to supress quotes around indentifiers
-disable system columns for views(Jan)
-new INET and CIDR types for network addresses(TomH, Paul)
-no more double quotes in psql output
-pg_dump now dumps views(Terry)
-new SET QUERY_LIMIT(Tatsuo,Jan)
-
-Source Tree Changes
--------------------
-/contrib cleanup(Jun)
-Inline some small functions called for every row(Bruce)
-Alpha/linux fixes
-Hp/UX cleanups(Tom)
-Multi-byte regression tests(Soonmyung.)
-Remove --disabled options from configure
-Define PGDOC to use POSTGRESDIR by default
-Make regression optional
-Remove extra braces code to pgindent(Bruce)
-Add bsdi shared library support(Bruce)
-New --without-CXX support configure option(Brook)
-New FAQ_CVS
-Update backend flowchart in tools/backend(Bruce)
-Change atttypmod from int16 to int32(Bruce, Tom)
-Getrusage() fix for platforms that do not have it(Tom)
-Add PQconnectdb, PGUSER, PGPASSWORD to libpq man page
-NS32K platform fixes(Phil Nelson, John Buller)
-Sco 7/UnixWare 2.x fixes(Billy,others)
-Sparc/Solaris 2.5 fixes(Ryan)
-Pgbuiltin.3 is obsolete, move to doc files(Thomas)
-Even more documention(Thomas)
-Nextstep support(Jacek)
-Aix support(David)
-pginterface manual page(Bruce)
-shared libraries all have version numbers
-merged all OS-specific shared library defines into one file
-smarter TCL/TK configuration checking(Billy)
-smarter perl configuration(Brook)
-configure uses supplied install-sh if no install script found(Tom)
-new Makefile.shlib for shared library configuration(Tom)
-
-
-
-PostgreSQL 6.3.2 Tue Apr 7 16:53:16 EDT 1998
-=========================================================
-
-A dump/restore is NOT required for those running 6.3.1. A
-'make distclean', 'make', and 'make install' is all that is required.
-This last step should be performed while the postmaster is not running.
-You should re-link any custom applications that use PostgreSQL libraries.
-
-Changes
--------
-configure detection improvements for tcl/tk(Brook Milligan, Alvin)
-Manual page improvements(Bruce)
-BETWEEN and LIKE fix(Thomas)
-fix for psql \connect used by pg_dump(Oliver Elphick)
-New odbc driver
-pgaccess, version 0.86
-qsort removed, now uses libc version, cleanups(Jeroen)
-fix for buffer over-runs detected(Maurice Gittens)
-fix for buffer overrun in libpgtcl(Randy Kunkee)
-fix for UNION with DISTINCT or ORDER BY(Bruce)
-gettimeofday configure check(Doug Winterburn)
-Fix "indexes not used" bug(Vadim)
-docs additions(Thomas)
-Fix for backend memory leak(Bruce)
-libreadline cleanup(Erwan MAS)
-Remove DISTDIR(Bruce)
-Makefile dependency cleanup(Jeroen van Vianen)
-ASSERT fixes(Bruce)
-
-
-
-PostgreSQL 6.3.1 Mon Mar 23 10:21:52 EST 1998
-=========================================================
-
-A dump/restore is NOT required for those running 6.3. A
-'make distclean', 'make', and 'make install' is all that is required.
-This last step should be performed while the postmaster is not running.
-You should re-link any custom applications that use PostgreSQL libraries.
-
-Changes
--------
-ecpg cleanup/fixes, now version 1.1(Michael Meskes)
-pg_user cleanup(Bruce)
-large object fix for pg_dump and tclsh(alvin@camberlo.demon.co.uk)
-LIKE fix for multiple adjacent underscores
-LIKE/BETWEEN fix for having function call as target(Thomas)
-fix for redefining builtin functions(Thomas)
-ultrix4 cleanup
-upgrade to pg_access 0.83
-updated CLUSTER manual page
-multi-byte character set support, see doc/README.mb(Tatsuo)
-configure --with-pgport fix
-pg_ident fix
-big-endian fix for backend communications(Kataoka)
-SUBSTR() and substring() fix(Jan)
-several jdbc fixes(Peter)
-libpgtcl improvements, see libptcl/README(Randy Kunkee)
-Fix for "Datasize = 0" error(Vadim)
-Prevent \do from wrapping(Bruce)
-Remove duplicate Russian character set entries
-Sunos4 cleanup
-Allow optional TABLE keyword in LOCK and SELECT INTO(Thomas)
-CREATE SEQUENCE options to allow a negative integer(Thomas)
-Add "PASSWORD" as an allowed column identifier(Thomas)
-Add checks for UNION target fields(Bruce)
-Fix Alpha port(Dwayne Bailey)
-Fix for text arrays containing quotes(Doug Gibson)
-Solaris compile fix(Albert Chin-A-Young)
-Better identify tcl and tk libs and includes(Bruce)
-
-
-
-PostgreSQL 6.3 Sun Mar 1 14:57:30 EST 1998
-=========================================================
-
-A dump/restore is required for those wishing to migrate data from
-previous releases of PostgreSQL.
-
-* The migration/6.2.1_to_6.3 file contains a detailed description
-* of the feature changes in this release, and is recommended reading.
-
-Bug Fixes
----------
-Fix binary cursors broken by MOVE implementation(Vadim)
-Fix for tcl library crash(Jan)
-Fix for array handling, from Gerhard Hintermayer
-Fix acl error, and remove duplicate pqtrace(Bruce)
-Fix psql \e for empty file(Bruce)
-Fix for textcat on varchar() fields(Bruce)
-Fix for DBT Sendproc (Zeugswetter Andres)
-Fix vacuum analyze syntax problem(Bruce)
-Fix for international identifiers(Tatsuo)
-Fix aggregates on inherited tables(Bruce)
-Fix substr() for out-of-bounds data
-Fix for select 1=1 or 2=2, select 1=1 and 2=2, and select sum(2+2)(Bruce)
-Fix notty output to show status result. -q option still turns it off(Bruce)
-Fix for count(*), aggs with views and multiple tables and sum(3)(Bruce)
-Fix cluster(Bruce)
-Fix for PQtrace start/stop several times(Bruce)
-Fix a variety of locking problems like newer lock waiters getting
- lock before older waiters, and having readlock people not share
- locks if a writer is waiting for a lock, and waiting writers not
- getting priority over waiting readers(Bruce)
-Fix crashes in psql when executing queries from external files(James)
-Fix problem with multiple order by columns, with the first one having
- NULL values(Jeroen)
-Use correct hash table support functions for float8 and int4(Thomas)
-Re-enable JOIN= option in CREATE OPERATOR statement (Thomas)
-Change precedence for boolean operators to match expected behavior(Thomas)
-Generate elog(ERROR) on over-large integer(Bruce)
-Allow multiple-argument functions in constraint clauses(Thomas)
-Check boolean input literals for 'true','false','yes','no','1','0'
- and throw elog(ERROR) if unrecognized(Thomas)
-Major large objects fix
-Fix for GROUP BY showing duplicates(Vadim)
-Fix for index scans in MergeJion(Vadim)
-
-Enhancements
-------------
-Subselects with EXISTS, IN, ALL, ANY keywords (Vadim, Bruce, Thomas)
-New User Manual(Thomas, others)
-Speedup by inlining some frequently-called functions
-Real deadlock detection, no more timeouts(Bruce)
-Add SQL92 "constants" CURRENT_DATE, CURRENT_TIME, CURRENT_TIMESTAMP,
- CURRENT_USER(Thomas)
-Modify constraint syntax to be SQL92-compliant(Thomas)
-Implement SQL92 PRIMARY KEY and UNIQUE clauses using indices(Thomas)
-Recognize SQL92 syntax for FOREIGN KEY. Throw elog notice(Thomas)
-Allow NOT NULL UNIQUE constraint clause (each allowed separately before)(Thomas)
-Allow Postgres-style casting ("::") of non-constants(Thomas)
-Add support for SQL3 TRUE and FALSE boolean constants(Thomas)
-Support SQL92 syntax for IS TRUE/IS FALSE/IS NOT TRUE/IS NOT FALSE(Thomas)
-Allow shorter strings for boolean literals (e.g. "t", "tr", "tru")(Thomas)
-Allow SQL92 delimited identifiers(Thomas)
-Implement SQL92 binary and hexadecimal string decoding (b'10' and x'1F')(Thomas)
-Support SQL92 syntax for type coercion of literal strings
- (e.g. "DATETIME 'now'")(Thomas)
-Add conversions for int2, int4, and OID types to and from text(Thomas)
-Use shared lock when building indices(Vadim)
-Free memory allocated for an user query inside transaction block after
- this query is done, was turned off in <= 6.2.1(Vadim)
-New SQL statement CREATE PROCEDURAL LANGUAGE(Jan)
-New PostgreSQL Procedural Language (PL) backend interface(Jan)
-Rename pg_dump -H option to -h(Bruce)
-Add Java support for passwords, European dates(Peter)
-Use indices for LIKE and ~, !~ operations(Bruce)
-Add hash functions for datetime and timespan(Thomas)
-Time Travel removed(Vadim, Bruce)
-Add paging for \d and \z, and fix \i(Bruce)
-Add Unix domain socket support to backend and to frontend library(Goran)
-Implement CREATE DATABASE/WITH LOCATION and initlocation utility(Thomas)
-Allow more SQL92 and/or Postgres reserved words as column identifiers(Thomas)
-Augment support for SQL92 SET TIME ZONE...(Thomas)
-SET/SHOW/RESET TIME ZONE uses TZ backend environment variable(Thomas)
-Implement SET keyword = DEFAULT and SET TIME ZONE DEFAULT(Thomas)
-Enable SET TIME ZONE using TZ environment variable(Thomas)
-Add PGDATESTYLE environment variable to frontend and backend initialization(Thomas)
-Add PGTZ, PGCOSTHEAP, PGCOSTINDEX, PGRPLANS, PGGEQO
- frontend library initialization environment variables(Thomas)
-Regression tests time zone automatically set with "setenv PGTZ PST8PDT"(Thomas)
-Add pg_description table for info on tables, columns, operators, types, and
- aggregates(Bruce)
-Increase 16 char limit on system table/index names to 32 characters(Bruce)
-Rename system indices(Bruce)
-Add 'GERMAN' option to SET DATESTYLE(Thomas)
-Define an "ISO-style" timespan output format with "hh:mm:ss" fields(Thomas)
-Allow fractional values for delta times (e.g. '2.5 days')(Thomas)
-Validate numeric input more carefully for delta times(Thomas)
-Implement day of year as possible input to date_part()(Thomas)
-Define timespan_finite() and text_timespan() functions(Thomas)
-Remove archive stuff(Bruce)
-Allow for a pg_password authentication database that is separate from
- the system password file(Todd)
-Dump ACLs, GRANT, REVOKE permissions(Matt)
-Define text, varchar, and bpchar string length functions(Thomas)
-Fix Query handling for inheritance, and cost computations(Bruce)
-Implement CREATE TABLE/AS SELECT (alternative to SELECT/INTO)(Thomas)
-Allow NOT, IS NULL, IS NOT NULL in constraints(Thomas)
-Implement UNIONs for SELECT(Bruce)
-Add UNION, GROUP, DISTINCT to INSERT(Bruce)
-varchar() stores only necessary bytes on disk(Bruce)
-Fix for BLOBs(Peter)
-Mega-Patch for JDBC...see README_6.3 for list of changes(Peter)
-Remove unused "option" from PQconnectdb()
-New LOCK command and lock manual page describing deadlocks(Bruce)
-Add new psql \da, \dd, \df, \do, \dS, and \dT commands(Bruce)
-Enhance psql \z to show sequences(Bruce)
-Show NOT NULL and DEFAULT in psql \d table(Bruce)
-New psql .psqlrc file startup(Andrew)
-Modify sample startup script in contrib/linux to show syslog(Thomas)
-New types for IP and MAC addresses in contrib/ip_and_mac(TomH)
-Unix system time conversions with date/time types in contrib/unixdate(Thomas)
-Update of contrib stuff(Massimo)
-Add Unix socket support to DBD::Pg(Goran)
-New python interface (PyGreSQL 2.0)(D'Arcy)
-New frontend/backend protocol has a version number, network byte order(Phil)
-Security features in pg_hba.conf enhanced and documented, many cleanups(Phil)
-CHAR() now faster access than VARCHAR() or TEXT
-ecpg embedded SQL preprocessor
-Reduce system column overhead(Vadmin)
-Remove pg_time table(Vadim)
-Add pg_type attribute to identify types that need length (bpchar, varchar)
-Add report of offending line when COPY command fails
-Allow VIEW permissions to be set separately from the underlying tables.
- For security, use GRANT/REVOKE on views as appropriate(Jan)
-Tables now have no default GRANT SELECT TO PUBLIC. You must
- explicitly grant such permissions.
-Clean up tutorial examples(Darren)
-
-Source Tree Changes
--------------------
-Add new html development tools, and flow chart in /tools/backend
-Fix for SCO compiles
-Stratus computer port "Gillies, Robert" <GilliesR@Nichols.com>
-Added support for shlib for BSD44_derived & i386_solaris
-Make configure more automated(Brook)
-Add script to check regression test results
-Break parser functions into smaller files, group together(Bruce)
-Rename heap_create to heap_create_and_catalog, rename heap_creatr
- to heap_create()(Bruce)
-Sparc/Linux patch for locking(TomS)
-Remove PORTNAME and reorganize port-specific stuff(Marc)
-Add optimizer README file(Bruce)
-Remove some recursion in optimizer and clean up some code there(Bruce)
-Fix for NetBSD locking(Henry)
-Fix for libptcl make(Tatsuo)
-AIX patch(Darren)
-Change IS TRUE, IS FALSE, ... to expressions using "=" rather than
- function calls to istrue() or isfalse() to allow optimization(Thomas)
-Various fixes NetBSD/Sparc related(TomH)
-Alpha linux locking(Travis,Ryan)
-Change elog(WARN) to elog(ERROR)(Bruce)
-FAQ for FreeBSD(Marc)
-Bring in the PostODBC source tree as part of our standard distribution(Marc)
-A minor patch for HP/UX 10 vs 9(Stan)
-New pg_attribute.atttypmod for type-specific info like varchar length(Bruce)
-Unixware patches(Billy)
-New i386 'lock' for spin lock asm(Billy)
-Support for multiplexed backends is removed
-Start an OpenBSD port
-Start an AUX port
-Start a Cygnus port
-Add string functions to regression suite(Thomas)
-Expand a few function names formerly truncated to 16 characters(Thomas)
-Remove un-needed malloc() calls and replace with palloc()(Bruce)
-
-
-
-PostgreSQL 6.2.1 Fri Oct 17 00:01:27 EDT 1997
-=========================================================
-
-This release does NOT require a dump/restore for those running 6.2, but
-there is an SQL query in /migration/6.2_to_6.2.1 that should be run. See
-that file for more information.
-
-Changes in this release
------------------------
-Allow TIME and TYPE column names(Thomas)
-Allow larger range of true/false as boolean values(Thomas)
-Support output of "now" and "current"(Thomas)
-Handle DEFAULT with INSERT of NULL properly(Vadim)
-Fix for relation reference counts problem in buffer manager(Vadim)
-Allow strings to span lines, like ANSI(Thomas)
-Fix for backward cursor with ORDER BY(Vadim)
-Fix avg(cash) computation(Thomas)
-Fix for specifying a column twice in ORDER/GROUP BY(Vadim)
-Documented new libpq function to return affected rows, PQcmdTuples(Bruce)
-Trigger function for inserting user names for INSERT/UPDATE(Brook Milligan)
-
-
-
-PostgreSQL 6.2 Thu Oct 02 12:53:46 EDT 1997
-=========================================================
-
-A dump/restore is required for those wishing to migrate data from
-previous releases of PostgreSQL.
-
-Bug Fixes
----------
-Fix problems with pg_dump for inheritance, sequences, archive tables(Bruce)
-Fix compile errors on overflow due to shifts, unsigned, and bad prototypes
- from Solaris(Diab Jerius)
-Fix bugs in geometric line arithmetic (bad intersection calculations)(Thomas)
-Check for geometric intersections at endpoints to avoid rounding ugliness(Thomas)
-Catch non-functional delete attempts(Vadim)
-Change time function names to be more consistent(Michael Reifenberg)
-Check for zero divides(Michael Reifenberg)
-Fix very old bug which made tuples changed/inserted by a commnd
- visible to the command itself (so we had multiple update of
- updated tuples, etc)(Vadim)
-Fix for SELECT null, 'fail' FROM pg_am (Patrick)
-SELECT NULL as EMPTY_FIELD now allowed(Patrick)
-Remove un-needed signal stuff from contrib/pginterface
-Fix OR (where x <> 1 or x isnull didn't return tuples with x NULL) (Vadim)
-Fix time_cmp function (Vadim)
-Fix handling of functions with non-attribute first argument in
- WHERE clauses (Vadim)
-Fix GROUP BY when order of entries is different from order
- in target list (Vadim)
-Fix pg_dump for aggregates without sfunc1 (Vadim)
-
-Enhancements
-------------
-Default genetic optimizer GEQO parameter is now 8(Bruce)
-Allow use parameters in target list having aggregates in functions(Vadim)
-Added JDBC driver as an interface(Adrian & Peter)
-pg_password utility
-Return number of tuples inserted/affected by INSERT/UPDATE/DELETE etc.(Vadim)
-Triggers implemented with CREATE TRIGGER (SQL3)(Vadim)
-SPI (Server Programming Interface) allows execution of queries inside
- C-functions (Vadim)
-NOT NULL implemented (SQL92)(Robson Paniago de Miranda)
-Include reserved words for string handling, outer joins, and unions(Thomas)
-Implement extended comments ("/* ... */") using exclusive states(Thomas)
-Add "//" single-line comments(Bruce)
-Remove some restrictions on characters in operator names(Thomas)
-DEFAULT and CONSTRAINT for tables implemented (SQL92)(Vadim & Thomas)
-Add text concatenation operator and function (SQL92)(Thomas)
-Support WITH TIME ZONE syntax (SQL92)(Thomas)
-Support INTERVAL <unit> TO <unit> syntax (SQL92)(Thomas)
-Define types DOUBLE PRECISION, INTERVAL, CHARACTER,
- and CHARACTER VARYING (SQL92)(Thomas)
-Define type FLOAT(p) and rudimentary DECIMAL(p,s), NUMERIC(p,s) (SQL92)(Thomas)
-Define EXTRACT(), POSITION(), SUBSTRING(), and TRIM() (SQL92)(Thomas)
-Define CURRENT_DATE, CURRENT_TIME, CURRENT_TIMESTAMP (SQL92)(Thomas)
-Add syntax and warnings for UNION, HAVING, INNER and OUTER JOIN (SQL92)(Thomas)
-Add more reserved words, mostly for SQL92 compliance(Thomas)
-Allow hh:mm:ss time entry for timespan/reltime types(Thomas)
-Add center() routines for lseg, path, polygon(Thomas)
-Add distance() routines for circle-polygon, polygon-polygon(Thomas)
-Check explicitly for points and polygons contained within polygons
- using an axis-crossing algorithm(Thomas)
-Add routine to convert circle-box(Thomas)
-Merge conflicting operators for different geometric data types(Thomas)
-Replace distance operator "<===>" with "<->"(Thomas)
-Replace "above" operator "!^" with ">^" and "below" operator "!|" with "<^"(Thomas)
-Add routines for text trimming on both ends, substring, and string position(Thomas)
-Added conversion routines circle(box) and poly(circle)(Thomas)
-Allow internal sorts to be stored in memory rather than in files(Bruce & Vadim)
-Allow functions and operators on internally-identical types to succeed(Bruce)
-Speed up backend startup after profiling analysis(Bruce)
-Inline frequently called functions for performance(Bruce)
-Reduce open() calls(Bruce)
-psql: Add PAGER for \h and \?,\C fix
-Fix for psql pager when no tty(Bruce)
-New entab utility(Bruce)
-General trigger functions for referential integrity (Vadim)
-General trigger functions for time travel (Vadim)
-General trigger functions for AUTOINCREMENT/IDENTITY feature (Vadim)
-MOVE implementation (Vadim)
-
-Source Tree Changes
--------------------
-HPUX 10 patches (Vladimir Turin)
-Added SCO support, (Daniel Harris)
-mkLinux patches (Tatsuo Ishii)
-Change geometric box terminology from "length" to "width"(Thomas)
-Deprecate temporary unstored slope fields in geometric code(Thomas)
-Remove restart instructions from INSTALL(Bruce)
-Look in /usr/ucb first for install(Bruce)
-Fix c++ copy example code(Thomas)
-Add -o to psql manual page(Bruce)
-Prevent relname unallocated string length from being copied into database(Bruce)
-Cleanup for NAMEDATALEN use(Bruce)
-Fix pg_proc names over 15 chars in output(Bruce)
-Add strNcpy() function(Bruce)
-remove some (void) casts that are unnecessary(Bruce)
-new interfaces directory(Marc)
-Replace fopen() calls with calls to fd.c functions(Bruce)
-Make functions static where possible(Bruce)
-enclose unused functions in #ifdef NOT_USED(Bruce)
-Remove call to difftime() in timestamp support to fix SunOS(Bruce & Thomas)
-Changes for Digital Unix
-Portability fix for pg_dumpall(Bruce)
-Rename pg_attribute.attnvals to attdisbursion(Bruce)
-"intro/unix" manual page now "pgintro"(Bruce)
-"built-in" manual page now "pgbuiltin"(Bruce)
-"drop" manual page now "drop_table"(Bruce)
-Add "create_trigger", "drop_trigger" manual pages(Thomas)
-Add constraints regression test(Vadim & Thomas)
-Add comments syntax regression test(Thomas)
-Add PGINDENT and support program(Bruce)
-Massive commit to run PGINDENT on all *.c and *.h files(Bruce)
-Files moved to /src/tools directory(Bruce)
-SPI and Trigger programming guides (Vadim & D'Arcy)
-
-
-
-PostgreSQL 6.1.1 Mon Jul 22 18:04:49 EDT 1997
-=========================================================
-
-This release does NOT require a dump/restore for those running 6.1.
-
-Changes in this release
------------------------
-fix for SET with options (Thomas)
-allow pg_dump/pg_dumpall to preserve ownership of all tables/objects(Bruce)
-new psql \connect option allows changing usernames without chaning databases
-fix for initdb --debug option(Yoshihiko Ichikawa))
-lextest cleanup(Bruce)
-hash fixes(Vadim)
-fix date/time month boundary arithmetic(Thomas)
-fix timezone daylight handling for some ports(Thomas, Bruce, Tatsuo)
-timestamp overhauled to use standard functions(Thomas)
-other code cleanup in date/time routines(Thomas)
-psql's \d now case-insensitive(Bruce)
-psql's backslash commands can now have trailing semicolon(Bruce)
-fix memory leak in psql when using \g(Bruce)
-major fix for endian handling of communication to server(Thomas, Tatsuo)
-Fix for Solaris assembler and include files(Yoshihiko Ichikawa)
-allow underscores in usernames(Bruce)
-pg_dumpall now returns proper status, portability fix(Bruce)
-
-
-
-PostgreSQL 6.1 Sun Jun 8 14:41:13 EDT 1997
-=========================================================
-
-A dump/restore is required for those wishing to migrate data from
-previous releases of PostgreSQL.
-
-Bug Fixes
----------
-packet length checking in library routines
-lock manager priority patch
-check for under/over flow of float8(Bruce)
-multi-table join fix(Vadim)
-SIGPIPE crash fix(Darren)
-large object fixes(Sven)
-allow btree indexes to handle NULLs(Vadim)
-timezone fixes(D'Arcy)
-select SUM(x) can return NULL on no rows(Thomas)
-internal optimizer, executor bug fixes(Vadim)
-fix problem where inner loop in < or <= has no rows(Vadim)
-prevent re-commuting join index clauses(Vadim)
-fix join clauses for multiple tables(Vadim)
-fix hash, hashjoin for arrays(Vadim)
-fix btree for abstime type(Vadim)
-large object fixes(Raymond)
-fix buffer leak in hash indices (Vadim)
-fix rtree for use in inner scan (Vadim)
-fix gist for use in inner scan, cleanups (Vadim, Andrea)
-avoid unnecessary local buffers allocation (Vadim, Massimo)
-fix local buffers leak in transaction aborts (Vadim)
-fix file manager memmory leaks, cleanups (Vadim, Massimo)
-fix storage manager memmory leaks (Vadim)
-fix btree duplicates handling (Vadim)
-fix deleted tuples re-incarnation caused by vacuum (Vadim)
-fix SELECT varchar()/char() INTO TABLE made zero-length fields(Bruce)
-many psql, pg_dump, and libpq memory leaks fixed using Purify (Igor)
-
-Enhancements
-------------
-attribute optimization statistics(Bruce)
-much faster new btree bulk load code(Paul)
-BTREE UNIQUE added to bulk load code(Vadim)
-new lock debug code(Massimo)
-massive changes to libpg++(Leo)
-new GEQO optimizer speeds table multi-table optimization(Martin)
-new WARN message for non-unique insert into unique key(Marc)
-update x=-3, no spaces, now valid(Bruce)
-remove case-sensitive identifier handling(Bruce,Thomas,Dan)
-debug backend now pretty-prints tree(Darren)
-new Oracle character functions(Edmund)
-new plaintext password functions(Dan)
-no such class or insufficient privilege changed to distinct messages(Dan)
-new ANSI timestamp function(Dan)
-new ANSI Time and Date types (Thomas)
-move large chunks of data in backend(Martin)
-multi-column btree indexes(Vadim)
-new SET var TO value command(Martin)
-update transaction status on reads(Dan)
-new locale settings for character types(Oleg)
-new SEQUENCE serial number generator(Vadim)
-GROUP BY function now possible(Vadim)
-re-organize regression test(Thomas,Marc)
-new optimizer operation weights(Vadim)
-new psql \z grant/permit option(Marc)
-new MONEY data type(D'Arcy,Thomas)
-tcp socket communication speed improved(Vadim)
-new VACUUM option for attribute statistics, and for certain columns (Vadim)
-many geometric type improvements(Thomas,Keith)
-additional regression tests(Thomas)
-new datestyle variable(Thomas,Vadim,Martin)
-more comparison operators for sorting types(Thomas)
-new conversion functions(Thomas)
-new more compact btree format(Vadim)
-allow pg_dumpall to preserve database ownership(Bruce)
-new SET GEQO=# and R_PLANS variable(Vadim)
-old (!GEQO) optimizer can use right-sided plans (Vadim)
-typechecking improvement in SQL parser(Bruce)
-new SET, SHOW, RESET commands(Thomas,Vadim)
-new \connect database USER option
-new destroydb -i option (Igor)
-new \dt and \di psql commands (Darren)
-SELECT "\n" now escapes newline (A. Duursma)
-new geometry conversion functions from old format (Thomas)
-
-Source tree changes
--------------------
-new configuration script(Marc)
-readline configuration option added(Marc)
-OS-specific configuration options removed(Marc)
-new OS-specific template files(Marc)
-no more need to edit Makefile.global(Marc)
-re-arrange include files(Marc)
-nextstep patches (Gregor Hoffleit)
-removed WIN32-specific code(Bruce)
-removed postmaster -e option, now only postgres -e option (Bruce)
-merge duplicate library code in front/backends(Martin)
-now works with eBones, international Kerberos(Jun)
-more shared library support
-c++ include file cleanup(Bruce)
-warn about buggy flex(Bruce)
-DG-UX, Ultrix, Irix, AIX portability fixes
-
-
-
-PostgreSQL 6.0 Wed Jan 29 00:19:54 EST 1997
-=========================================================
-
-A dump/restore is required for those wishing to migrate data from
-previous releases of PostgreSQL.
-
-Bug Fixes
----------
-ALTER TABLE bug - running postgress process needs to re-read table definition
-Allow vacuum to be run on one table or entire database(Bruce)
-Array fixes
-Fix array over-runs of memory writes(Kurt)
-Fix elusive btree range/non-range bug(Dan)
-Fix for hash indexes on some types like time and date
-Fix for pg_log size explosion
-Fix permissions on lo_export()(Bruce)
-Fix unitialized reads of memory(Kurt)
-Fixed ALTER TABLE ... char(3) bug(Bruce)
-Fixed a few small memory leaks
-Fixed EXPLAIN handling of options and changed full_path option name
-Fixed output of group acl permissions
-Memory leaks (hunt and destroy with tools like Purify(Kurt)
-Minor improvements to rules system
-NOTIFY fixes
-New asserts for run-checking
-Overhauled parser/analyze code to properly report errors and increase speed
-Pg_dump -d now handles NULL's properly(Bruce)
-Prevent SELECT NULL from crashing server (Bruce)
-Properly report errors when INSERT ... SELECT columns did not match
-Properly report errors when insert column names were not correct
-Psql \g filename now works(Bruce)
-Psql fixed problem with multiple statements on one line with multiple outputs
-Removed duplicate system oid's
-SELECT * INTO TABLE . GROUP/ORDER BY gives unlink error if table exists(Bruce)
-Several fixes for queries that crashed the backend
-Starting quote in insert string errors(Bruce)
-Submiting an empty query now returns empty status, not just " " query(Bruce)
-
-Enhancements
-------------
-Add EXPLAIN manual page(Bruce)
-Add UNIQUE index capability(Dan)
-Add hostname/user level access control rather than just hostname and user
-Add synonym of != for <>(Bruce)
-Allow "select oid,* from table"
-Allow BY,ORDER BY to specify columns by number, or by non-alias table.column(Bruce)
-Allow COPY from the frontend(Bryan)
-Allow GROUP BY to use alias column name(Bruce)
-Allow actual compression, not just reuse on the same page(Vadim)
-Allow installation-configuration option to auto-add all local users(Bryan)
-Allow libpq to distinguish between text value '' and null(Bruce)
-Allow non-postgres users with createdb privs to destroydb's
-Allow restriction on who can create C functions(Bryan)
-Allow restriction on who can do backend COPY(Bryan)
-Can shrink tables, pg_time and pg_log(Vadim & Erich)
-Change debug level 2 to print queries only, changed debug heading layout(Bruce)
-Change default decimal constant representation from float4 to float8(Bruce)
-European date format now set when postmaster is started
-Execute lowercase function names if not found with exact case
-Fixes for aggregate/GROUP processing, allow 'select sum(func(x),sum(x+y) from z'
-Gist now included in the distrubution(Marc)
-Idend authentication of local users(Bryan)
-Implement BETWEEN qualifier(Bruce)
-Implement IN qualifier(Bruce)
-Libpq has PQgetisnull()(Bruce)
-Libpq++ improvements
-New options to initdb(Bryan)
-Pg_dump allow dump of oid's(Bruce)
-Pg_dump create indexes after tables are loaded for speed(Bruce)
-Pg_dumpall dumps all databases, and the user table
-Pginterface additions for NULL values(Bruce)
-Prevent postmaster from being run as root
-Psql \h and \? is now readable(Bruce)
-Psql allow backslashed, semicolons anywhere on the line(Bruce)
-Psql changed command prompt for lines in query or in quotes(Bruce)
-Psql char(3) now displays as (bp)char in \d output(Bruce)
-Psql return code now more accurate(Bryan?)
-Psql updated help syntax(Bruce)
-Re-visit and fix vacuum(Vadim)
-Reduce size of regression diffs, remove timezone name difference(Bruce)
-Remove compile-time parameters to enable binary distributions(Bryan)
-Reverse meaning of HBA masks(Bryan)
-Secure Authentication of local users(Bryan)
-Speed up vacuum(Vadim)
-Vacuum now had VERBOSE option(Bruce)
-
-Source tree changes
--------------------
-All functions now have prototypes that are compared against the calls
-Allow asserts to be disabled easly from Makefile.global(Bruce)
-Change oid constants used in code to #define names
-Decoupled sparc and solaris defines(Kurt)
-Gcc -Wall compiles cleanly with warnings only from unfixable constructs
-Major include file reorganization/reduction(Marc)
-Make now stops on compile failure(Bryan)
-Makefile restructuring(Bryan, Marc)
-Merge bsdi_2_1 to bsdi(Bruce)
-Monitor program removed
-Name change from Postgres95 to PostgreSQL
-New config.h file(Marc, Bryan)
-PG_VERSION now set to 6.0 and used by postmaster
-Portability additions, including Ultrix, DG/UX, AIX, and Solaris
-Reduced the number of #define's, centeralized #define's
-Remove duplicate OIDS in system tables(Dan)
-Remove duplicate system catalog info or report mismatches(Dan)
-Removed many os-specific #define's
-Restructured object file generation/location(Bryan, Marc)
-Restructured port-specific file locations(Bryan, Marc)
-Unused/uninialized variables corrected
-
-
-
-PostgreSQL 1.09 ???
-=========================================================
-
-Sorry, we stopped keeping track of changes from 1.02 to 1.09. Some of
-the changes listed in 6.0 were actually included in the 1.02.1 to 1.09
-releases.
-
-
-
-Postgres95 1.02 Thu Aug 1 18:00:00 EDT 1996
-=========================================================
-
-Source code maintainenance and development
- * worldwide team of volunteers
- * the source tree now in CVS at ftp.ki.net
- * developers mailing list - pg95-dev@ki.net
-
-Enhancements
- * psql (and underlying libpq library) now has many more options for
- formatting output, including HTML
- * pg_dump now output the schema and/or the data, with many fixes to
- enhance completeness.
- * psql used in place of monitor in administration shell scripts.
- monitor to be depreciated in next release.
- * date/time functions enhanced
- * NULL insert/update/comparison fixed/enhanced
- * TCL/TK lib and shell fixed to work with both tck7.4/tk4.0 and tcl7.5/tk4.1
-
-Bug Fixes (almost too numerous to mention)
- * indexes
- * storage management
- * check for NULL pointer before dereferencing
- * Makefile fixes
-
-New Ports
- * added SolarisX86 port
- * added BSDI 2.1 port
- * added DGUX port
-
-Contributors (appologies to any missed)
- * Kurt J. Lidl <lidl@va.pubnix.com>
- (missed in first run, but no less important)
- * Erich Stamberger <eberger@gewi.kfunigraz.ac.at>
- * Jason Wright <jason@shiloh.vnet.net>
- * Cees de Groot <C.deGroot@inter.NL.net>
- * ernst.molitor@uni-bonn.de
- * michael.siebenborn@ae3.Hypo.DE (Michael Siebenborn (6929))
- * Brian E. Gallew <geek+@cmu.edu>
- * Vadim B. Mikheev <vadim@sable.krasnoyarsk.su>
- * Adam Sussman <myddryn@vidya.com>
- * Chris Dunlop <chris@onthe.net.au>
- * Marc G. Fournier <scrappy@ki.net>
- * Dan McGuirk <mcguirk@indirect.com>
- * Dr_George_D_Detlefsen <drgeorge@ilt.com>
- * Erich Stamberger <eberger@gewi.kfunigraz.ac.at>
- * Massimo Dal Zotto <dz@cs.unitn.it>
- * Randy Kunkee <kunkee@Starbase.NeoSoft.COM>
- * Rick Weldon <rick@wisetech.com>
- * Thomas van Reimersdahl <reimersd@dali.techinfo.rwth-aachen.de>
- * david bennett <dave@bensoft.com>
- * ernst.molitor@uni-bonn.de
- * Julian Assange <proff@suburbia.net>
- * Bruce Momjian <maillist@candle.pha.pa.us>
- * Paul "Shag" Walmsley <ccshag@cclabs.missouri.edu>
- * "Alistair G. Crooks" <azcb0@sde.uts.amdahl.com>
-
-
-
-Postgres95 1.01 Fri Feb 23 18:20:36 PST 1996
-=========================================================
-Incompatibilities:
- * 1.01 is backwards compatible with 1.0 database provided the user
- follow the steps outlined in the MIGRATION_from_1.0_to_1.01 file.
- If those steps are not taken, 1.01 is not compatible with 1.0 database.
-
-Enhancements:
- * added PQdisplayTuples() to libpq and changed monitor and psql to use it
- * added NeXT port (requires SysVIPC implementation)
- * added CAST .. AS ... syntax
- * added ASC and DESC keywords
- * added 'internal' as a possible language for CREATE FUNCTION
- internal functions are C functions which have been statically linked
- into the postgres backend.
- * a new type "name" has been added for system identifiers (table names,
- attribute names, etc.) This replaces the old char16 type. The
- of name is set by the NAMEDATALEN #define in src/Makefile.global
- * a readable reference manual that describes the query language.
- * added host-based access control. A configuration file ($PGDATA/pg_hba)
- is used to hold the configuration data. If host-based access control
- is not desired, comment out HBA=1 in src/Makefile.global.
- * changed regex handling to be uniform use of Henry Spencer's regex code
- regardless of platform. The regex code is included in the distribution
- * added functions and operators for case-insensitive regular expressions.
- The operators are ~* and !~*.
- * pg_dump uses COPY instead of SELECT loop for better performance
-
-Bug fixes:
- * fixed an optimizer bug that was causing core dumps when
- functions calls were used in comparisons in the WHERE clause
- * changed all uses of getuid to geteuid so that effective uids are used
- * psql now returns non-zero status on errors when using -c
- * applied public patches 1-14
-
-
-
-Postgres95 1.0 Tue Sep 5 11:24:11 PDT 1995
-=========================================================
-
-Copyright change:
- * The copyright of Postgres 1.0 has been loosened to be freely modifiable
- and modifiable for any purpose. Please read the COPYRIGHT file.
- Thanks to Professor Michael Stonebraker for making this possible.
-
-Incompatibilities:
- * date formats have to be MM-DD-YYYY (or DD-MM-YYYY if you're using
- EUROPEAN STYLE). This follows SQL-92 specs.
- * "delimiters" is now a keyword
-
-Enhancements:
- * sql LIKE syntax has been added
- * copy command now takes an optional USING DELIMITER specification.
- delimiters can be any single-character string.
- * IRIX 5.3 port has been added.
- Thanks to Paul Walmsley (ccshag@everest.cclabs.missouri.edu) and others.
- * updated pg_dump to work with new libpq
- * \d has been added psql
- Thanks to Keith Parks (emkxp01@mtcc.demon.co.uk)
- * regexp performance for architectures that use POSIX regex has been
- improved due to caching of precompiled patterns.
- Thanks to Alistair Crooks (agc@uts.amdahl.com)
- * a new version of libpq++
- Thanks to William Wanders (wwanders@sci.kun.nl)
-
-Bug fixes:
- * arbitrary userids can be specified in the createuser script
- * \c to connect to other databases in psql now works.
- * bad pg_proc entry for float4inc() is fixed
- * users with usecreatedb field set can now create databases without
- having to be usesuper
- * remove access control entries when the entry no longer has any
- permissions
- * fixed non-portable datetimes implementation
- * added kerberos flags to the src/backend/Makefile
- * libpq now works with kerberos
- * typographic errors in the user manual have been corrected.
- * btrees with multiple index never worked, now we tell you they don't
- work when you try to use them
-
-
-
-Postgres95 Beta 0.03 Fri Jul 21 14:49:31 PDT 1995
-=========================================================
-Incompatible changes:
- * BETA-0.3 IS INCOMPATIBLE WITH DATABASES CREATED WITH PREVIOUS VERSIONS
- (due to system catalog changes and indexing structure changes).
- * double-quote (") is deprecated as a quoting character for string literals;
- you need to convert them to single quotes (').
- * name of aggregates (eg. int4sum) are renamed in accordance with the
- SQL standard (eg. sum).
- * CHANGE ACL syntax is replaced by GRANT/REVOKE syntax.
- * float literals (eg. 3.14) are now of type float4 (instead of float8 in
- previous releases); you might have to do typecasting if you depend on it
- being of type float8. If you neglect to do the typecasting and you assign
- a float literal to a field of type float8, you may get incorrect values
- stored!
- * LIBPQ has been totally revamped so that frontend applications
- can connect to multiple backends
- * the usesysid field in pg_user has been changed from int2 to int4 to
- allow wider range of Unix user ids.
- * the netbsd/freebsd/bsd o/s ports have been consolidated into a
- single BSD44_derived port. (thanks to Alistair Crooks)
-
-SQL standard-compliance (the following details changes that makes postgres95
-more compliant to the SQL-92 standard):
- * the following SQL types are now built-in: smallint, int(eger), float, real,
- char(N), varchar(N), date and time.
-
- The following are aliases to existing postgres types:
- smallint -> int2
- integer, int -> int4
- float, real -> float4
- char(N) and varchar(N) are implemented as truncated text types. In
- addition, char(N) does blank-padding.
- * single-quote (') is used for quoting string literals; '' (in addition to
- \') is supported as means of inserting a single quote in a string
- * SQL standard aggregate names (MAX, MIN, AVG, SUM, COUNT) are used
- (Also, aggregates can now be overloaded, i.e. you can define your
- own MAX aggregate to take in a user-defined type.)
- * CHANGE ACL removed. GRANT/REVOKE syntax added.
- - Privileges can be given to a group using the "GROUP" keyword.
- For example:
- GRANT SELECT ON foobar TO GROUP my_group;
- The keyword 'PUBLIC' is also supported to mean all users.
-
- Privileges can only be granted or revoked to one user or group
- at a time.
-
- "WITH GRANT OPTION" is not supported. Only class owners can change
- access control
- - The default access control is to to grant users readonly access.
- You must explicitly grant insert/update access to users. To change
- this, modify the line in
- src/backend/utils/acl.h
- that defines ACL_WORLD_DEFAULT
-
-Bug fixes:
- * the bug where aggregates of empty tables were not run has been fixed. Now,
- aggregates run on empty tables will return the initial conditions of the
- aggregates. Thus, COUNT of an empty table will now properly return 0.
- MAX/MIN of an empty table will return a tuple of value NULL.
- * allow the use of \; inside the monitor
- * the LISTEN/NOTIFY asynchronous notification mechanism now work
- * NOTIFY in rule action bodies now work
- * hash indices work, and access methods in general should perform better.
- creation of large btree indices should be much faster. (thanks to Paul
- Aoki)
-
-Other changes and enhancements:
- * addition of an EXPLAIN statement used for explaining the query execution
- plan (eg. "EXPLAIN SELECT * FROM EMP" prints out the execution plan for
- the query).
- * WARN and NOTICE messages no longer have timestamps on them. To turn on
- timestamps of error messages, uncomment the line in
- src/backend/utils/elog.h:
- /* define ELOG_TIMESTAMPS */
- * On an access control violation, the message
- "Either no such class or insufficient privilege"
- will be given. This is the same message that is returned when
- a class is not found. This dissuades non-privileged users from
- guessing the existence of privileged classes.
- * some additional system catalog changes have been made that are not
- visible to the user.
-
-libpgtcl changes:
- * The -oid option has been added to the "pg_result" tcl command.
- pg_result -oid returns oid of the last tuple inserted. If the
- last command was not an INSERT, then pg_result -oid returns "".
- * the large object interface is available as pg_lo* tcl commands:
- pg_lo_open, pg_lo_close, pg_lo_creat, etc.
-
-Portability enhancements and New Ports:
- * flex/lex problems have been cleared up. Now, you should be able to use
- flex instead of lex on any platforms. We no longer make assumptions of
- what lexer you use based on the platform you use.
- * The Linux-ELF port is now supported. Various configuration have been
- tested: The following configuration is known to work:
- kernel 1.2.10, gcc 2.6.3, libc 4.7.2, flex 2.5.2, bison 1.24
- with everything in ELF format,
-
-New utilities:
- * ipcclean added to the distribution
- ipcclean usually does not need to be run, but if your backend crashes
- and leaves shared memory segments hanging around, ipcclean will
- clean them up for you.
-
-New documentation:
- * the user manual has been revised and libpq documentation added.
-
-
-
-Postgres95 Beta 0.02 Thu May 25 16:54:46 PDT 1995
-=========================================================
-Incompatible changes:
- * The SQL statement for creating a database is 'CREATE DATABASE' instead
- of 'CREATEDB'. Similarly, dropping a database is 'DROP DATABASE' instead
- of 'DESTROYDB'. However, the names of the executables 'createdb' and
- 'destroydb' remain the same.
-
-New tools:
- * pgperl - a Perl (4.036) interface to Postgres95
- * pg_dump - a utility for dumping out a postgres database into a
- script file containing query commands. The script files are in a ASCII
- format and can be used to reconstruct the database, even on other
- machines and other architectures. (Also good for converting
- a Postgres 4.2 database to Postgres95 database.)
-
-The following ports have been incorporated into postgres95-beta-0.02:
- * the NetBSD port by Alistair Crooks
- * the AIX port by Mike Tung
- * the Windows NT port by Jon Forrest (more stuff but not done yet)
- * the Linux ELF port by Brian Gallew
-
-The following bugs have been fixed in postgres95-beta-0.02:
- * new lines not escaped in COPY OUT and problem with COPY OUT when first
- attribute is a '.'
- * cannot type return to use the default user id in createuser
- * SELECT DISTINCT on big tables crashes
- * Linux installation problems
- * monitor doesn't allow use of 'localhost' as PGHOST
- * psql core dumps when doing \c or \l
- * the "pgtclsh" target missing from src/bin/pgtclsh/Makefile
- * libpgtcl has a hard-wired default port number
- * SELECT DISTINCT INTO TABLE hangs
- * CREATE TYPE doesn't accept 'variable' as the internallength
- * wrong result using more than 1 aggregate in a SELECT
-
-
-
-Postgres95 Beta 0.01 Mon May 1 19:03:10 PDT 1995
-=========================================================
-Initial release.
+
+PostgreSQL History
+by The PostgreSQL Development Team
+Edited by Thomas Lockhart
+PostgreSQL is © 1996-9 by the Postgres Global Development Group.
+
+Release 6.5
+
+ This release marks a major step in the development team's mastery of the
+ source code we inherited from Berkeley. You will see we are now easily
+ adding major features, thanks to the increasing size and experience of our
+ world-wide development team.
+ Here is a brief summary of some of the more noticable changes:
+
+ Multi-version concurrency control(MVCC)
+ This removes our old table-level locking, and replaces it with a locking
+ system that is superior to most commercial database systems. In a
+ traditional system, each row that is modified is locked until committed,
+ preventing reads by other users. MVCC uses the natural multi-version
+ nature of PostgreSQL to allow readers to continue reading consistent data
+ during writer activity. Writers continue to use the compact pg_log
+ transaction system. This is all performed without having to allocate a
+ lock for every row like traditional database systems. So, basically, we
+ no longer are restricted by simple table-level locking; we have something
+ better than row-level locking.
+
+ Numeric data type
+ We now have a true numeric data type, with user-specified precision.
+
+ Temporary tables
+ Temporary tables are guaranteed to have unique names within a database
+ session, and are destroyed on session exit.
+
+ New SQL features
+ We now have CASE, INTERSECT, and EXCEPT statement support. We have new
+ LIMIT/OFFSET, SET TRANSACTION ISOLATION LEVEL, SELECT ... FOR UPDATE, and
+ an improved LOCK command.
+
+ Speedups
+ We continue to speed up PostgreSQL, thanks to the variety of talents
+ within our team. We have sped up memory allocation, optimization, table
+ joins, and row transfer routines.
+
+ Ports
+ We continue to expand our port list, this time including WinNT/ix86 and
+ NetBSD/arm32.
+
+ Interfaces
+ Most interfaces have new versions, and existing functionality has been
+ improved.
+
+ Documentation
+ New and updated material is present throughout the documentation. New
+ FAQs have been contributed for SGI and AIX platforms. The Tutorial has
+ introductory information on SQL from Stefan Simkovics. For the User's
+ Guide, there are reference pages covering the postmaster and more utility
+ programs, and a new appendix contains details on date/time behavior. The
+ Administrator's Guide has a new chapter on troubleshooting from Tom Lane.
+ And the Programmer's Guide has a description of query processing, also
+ from Stefan, and details on obtaining the Postgres source tree via
+ anonymous CVS and CVSup.
+
+
+Migration to v6.5
+
+ A dump/restore using pg_dump or pg_dumpall is required for those wishing
+ to migrate data from any previous release of Postgres.
+ The new Multi-Version Concurrency Control (MVCC) features can give
+ somewhat different behaviors in multi-user environments. Read and
+ understand the following section to ensure that your existing applications
+ will give you the behavior you need.
+
+ Multi-Version Concurrency Control
+ Because readers in 6.5 don't lock data, regardless of transaction
+ isolation level, data read by one transaction can be overwritten by
+ another. In the other words, if a row is returned by SELECT it doesn't mean
+ that this row really exists at the time it is returned (i.e. sometime after
+ the statement or transaction began) nor that the row is protected from
+ deletion or updation by concurrent transactions before the current
+ transaction does a commit or rollback.
+ To ensure the actual existance of a row and protect it against concurrent
+ updates one must use SELECT FOR UPDATE or an appropriate LOCK TABLE
+ statement. This should be taken into account when porting applications from
+ previous releases of Postgres and other environments.
+ Keep above in mind if you are using contrib/refint.* triggers for
+ referential integrity. Additional technics are required now. One way is to
+ use LOCK parent_table IN SHARE ROW EXCLUSIVE MODE command if a transaction
+ is going to update/delete a primary key and use LOCK parent_table IN SHARE
+ MODE command if a transaction is going to update/insert a foreign key.
+
+ Note: Note that if you run a transaction in SERIALIZABLE mode then you
+ must execute the LOCK commands above before execution of any DML
+ statement (SELECT/INSERT/DELETE/UPDATE/FETCH/COPY_TO) in the transaction.
+
+
+ These inconveniences will disappear in the future when the ability to read
+ dirty (uncommitted) data (regardless of isolation level) and true
+ referential integrity will be implemented.
+
+Detailed Change List
+
+
+
+ Bug Fixes
+ ---------
+ Fix text<->float8 and text<->float4 conversion functions(Thomas)
+ Fix for creating tables with mixed-case constraints(Billy)
+ Change exp()/pow() behavior to generate error on underflow/overflow(Jan)
+ Fix bug in pg_dump -z
+ Memory overrun cleanups(Tatsuo)
+ Fix for lo_import crash(Tatsuo)
+ Adjust handling of data type names to suppress double quotes(Thomas)
+ Use type coersion for matching columns and DEFAULT(Thomas)
+ Fix deadlock so it only checks once after one second of sleep(Bruce)
+ Fixes for aggregates and PL/pgsql(Hiroshi)
+ Fix for subquery crash(Vadim)
+ Fix for libpq function PQfnumber and case-insensitive names(Bahman
+ Rafatjoo)
+ Fix for large object write-in-middle, no extra block, memory
+ consumption(Tatsuo)
+ Fix for pg_dump -d or -D and quote special characters in INSERT
+ Repair serious problems with dynahash(Tom)
+ Fix INET/CIDR portability problems
+ Fix problem with selectivity error in ALTER TABLE ADD COLUMN(Bruce)
+ Fix executor so mergejoin of different column types works(Tom)
+ Fix for Alpha OR selectivity bug
+ Fix OR index selectivity problem(Bruce)
+ Fix so \d shows proper length for char()/varchar()(Ryan)
+ Fix tutorial code(Clark)
+ Improve destroyuser checking(Oliver)
+ Fix for Kerberos(Rodney McDuff)
+ Fix for dropping database while dirty buffers(Bruce)
+ Fix so sequence nextval() can be case-sensitive(Bruce)
+ Fix !!= operator
+ Drop buffers before destroying database files(Bruce)
+ Fix case where executor evaluates functions twice(Tatsuo)
+ Allow sequence nextval actions to be case-sensitive(Bruce)
+ Fix optimizer indexing not working for negative numbers(Bruce)
+ Fix for memory leak in executor with fjIsNull
+ Fix for aggregate memory leaks(Erik Riedel)
+ Allow username containing a dash GRANT permissions
+ Cleanup of NULL in inet types
+ Clean up system table bugs(Tom)
+ Fix problems of PAGER and \? command(Masaaki Sakaida)
+ Reduce default multi-segment file size limit to 1GB(Peter)
+ Fix for dumping of CREATE OPERATOR(Tom)
+ Fix for backward scanning of cursors(Hiroshi Inoue)
+ Fix for COPY FROM STDIN when using \i(Tom)
+ Fix for subselect is compared inside an expression(Jan)
+ Fix handling of error reporting while returning rows(Tom)
+ Fix problems with reference to array types(Tom,Jan)
+ Prevent UPDATE SET oid(Jan)
+ Fix pg_dump so -t option can handle case-sensitive tablenames
+ Fixes for GROUP BY in special cases(Tom, Jan)
+ Fix for memory leak in failed queries(Tom)
+ DEFAULT now supports mixed-case identifiers(Tom)
+ Fix for multi-segment uses of DROP/RENAME table, indexes(Ole Gjerde)
+ Disable use of pg_dump with both -o and -d options(Bruce)
+ Allow pg_dump to properly dump GROUP permissions(Bruce)
+
+ Enhancements
+ ------------
+ Add "vacuumdb" utility
+ Speed up libpq by allocating memory better(Tom)
+ EXPLAIN all indices used(Tom)
+ Implement CASE, COALESCE, NULLIF expression(Thomas)
+ New pg_dump table output format(Constantin)
+ Add string min()/max() functions(Thomas)
+ Extend new type coersion techniques to aggregates(Thomas)
+ New moddatetime contrib(Terry)
+ Update to pgaccess 0.96(Constantin)
+ Add routines for single-byte "char" type(Thomas)
+ Improved substr() function(Thomas)
+ Improved multi-byte handling(Tatsuo)
+ Multi-version concurrency control/MVCC(Vadim)
+ New Serialized mode(Vadim)
+ Fix for tables over 2gigs(Peter)
+ New SET TRANSACTION ISOLATION LEVEL(Vadim)
+ New LOCK TABLE IN ... MODE(Vadim)
+ Update ODBC driver(Byron)
+ New NUMERIC data type(Jan)
+ New SELECT FOR UPDATE(Vadim)
+ Handle "NaN" and "Infinity" for input values(Jan)
+ Improved date/year handling(Thomas)
+ Improved handling of backend connections(Magnus)
+ New options ELOG_TIMESTAMPS and USE_SYSLOG options for log files(Massimo)
+ New TCL_ARRAYS option(Massimo)
+ New INTERSECT and EXCEPT(Stefan)
+ New pg_index.indisprimary for primary key tracking(D'Arcy)
+ New pg_dump option to allow dropping of tables before creation(Brook)
+ Speedup of row output routines(Tom)
+ New READ COMMITTED isolation level(Vadim)
+ New TEMP tables/indexes(Bruce)
+ Prevent sorting if result is already sorted(Jan)
+ New memory allocation optimization(Jan)
+ Allow psql to do \p\g(Bruce)
+ Allow multiple rule actions(Jan)
+ Added LIMIT/OFFSET functionality(Jan)
+ Improve optimizer when joining a large number of tables(Bruce)
+ New intro to SQL from S. Simkovics' Master's Thesis (Stefan, Thomas)
+ New intro to backend processing from S. Simkovics' Master's Thesis (Stefan)
+ Improved int8 support(Ryan Bradetich, Thomas, Tom)
+ New routines to convert between int8 and text/varchar types(Thomas)
+ New bushy plans, where meta-tables are joined(Bruce)
+ Enable right-hand queries by default(Bruce)
+ Allow reliable maximum number of backends to be set at configure time
+ (--with-maxbackends and postmaster switch (-N backends))(Tom)
+ GEQO default now 10 tables because of optimizer speedups(Tom)
+ Allow NULL=Var for MS-SQL portability(Michael, Bruce)
+ Modify contrib check_primary_key() so either "automatic" or
+ "dependent"(Anand)
+ Allow psql \d on a view show query(Ryan)
+ Speedup for LIKE(Bruce)
+ Ecpg fixes/features, see src/interfaces/ecpg/ChangeLog file(Michael)
+ JDBC fixes/features, see src/interfaces/jdbc/CHANGELOG(Peter)
+ Make % operator have precedence like /(Bruce)
+ Add new postgres -O option to allow system table structure changes(Bruce)
+ Update contrib/pginterface/findoidjoins script(Tom)
+ Major speedup in vacuum of deleted rows with indexes(Vadim)
+ Allow non-SQL functions to run different versions based on arguments(Tom)
+ Add -E option that shows actual queries sent by \dt and friends(Masaaki
+ Sakaida)
+ Add version number in startup banners for psql(Masaaki Sakaida)
+ New contrib/vacuumlo removes large objects not referenced(Peter)
+ New initialization for table sizes so non-vacuumed tables perform
+ better(Tom)
+ Improve error messages when a connection is rejected(Tom)
+ Support for arrays of char() and varchar() fields(Massimo)
+ Overhaul of hash code to increase reliability and performance(Tom)
+ Update to PyGreSQL 2.4(D'Arcy)
+ Changed debug options so -d4 and -d5 produce different node displays(Jan)
+ New pg_options: pretty_plan, pretty_parse, pretty_rewritten(Jan)
+ Better optimization statistics for system table access(Tom)
+ Better handling of non-default block sizes(Massimo)
+ Improve GEQO optimizer memory consumption(Tom)
+ UNION now suppports ORDER BY of columns not in target list(Jan)
+ Major libpq++ improvements(Vince Vielhaber)
+ pg_dump now uses -z(ACL's) as default(Bruce)
+ backend cache, memory speedups(Tom)
+ have pg_dump do everything in one snapshot transaction(Vadim)
+ fix for large object memory leakage, fix for pg_dumping(Tom)
+ INET type now respects netmask for comparisons
+
+ Source Tree Changes
+ -------------------
+ Improve port matching(Tom)
+ Portability fixes for SunOS
+ Add NT/Win32 backend port and enable dynamic loading(Magnus and Daniel
+ Horak)
+ New port to Cobalt Qube(Mips) running Linux(Tatsuo)
+ Port to NetBSD/m68k(Mr. Mutsuki Nakajima)
+ Port to NetBSD/sun3(Mr. Mutsuki Nakajima)
+ Port to NetBSD/macppc(Toshimi Aoki)
+ Fix for tcl/tk configuration(Vince)
+ Removed CURRENT keyword for rule queries(Jan)
+ NT dynamic loading now works(Daniel Horak)
+ Add ARM32 support(Andrew McMurry)
+ Better support for HPUX 11 and Unixware
+ Improve file handling to be more uniform, prevent file descriptor leak(Tom)
+ New install commands for plpgsql(Jan)
+
+
+
+
+Release 6.4.2
+
+ The 6.4.1 release was improperly packaged. This also has one additional bug
+ fix.
+
+Migration to v6.4.2
+
+ A dump/restore is not required for those running 6.4.*.
+
+Detailed Change List
+
+ Fix for datetime constant problem on some platforms(Thomas)
+
+Release 6.4.1
+
+ This is basically a cleanup release for 6.4. We have fixed a variety of
+ problems reported by 6.4 users.
+
+Migration to v6.4.1
+
+ A dump/restore is not required for those running 6.4.
+
+Detailed Change List
+
+ Add pg_dump -N flag to force double quotes around identifiers. This is
+ the default(Thomas)
+ Fix for NOT in where clause causing crash(Bruce)
+ EXPLAIN VERBOSE coredump fix(Vadim)
+ Fix shared-library problems on Linux
+ Fix test for table existance to allow mixed-case and whitespace in
+ the table name(Thomas)
+ Fix a couple of pg_dump bugs
+ Configure matches template/.similar entries better(Tom)
+ Change builtin function names from SPI_* to spi_*
+ OR WHERE clause fix(Vadim)
+ Fixes for mixed-case table names(Billy)
+ contrib/linux/postgres.init.csh/sh fix(Thomas)
+ libpq memory overrun fix
+ SunOS fixes(Tom)
+ Change exp() behavior to generate error on underflow(Thomas)
+ pg_dump fixes for memory leak, inheritance constraints, layout change
+ update pgaccess to 0.93
+ Fix prototype for 64-bit platforms
+ Multi-byte fixes(Tatsuo)
+ New ecpg man page
+ Fix memory overruns(Tatsuo)
+ Fix for lo_import() crash(Bruce)
+ Better search for install program(Tom)
+ Timezone fixes(Tom)
+ HPUX fixes(Tom)
+ Use implicit type coersion for matching DEFAULT values(Thomas)
+ Add routines to help with single-byte (internal) character type(Thomas)
+ Compilation of libpq for Win32 fixes(Magnus)
+ Upgrade to PyGreSQL 2.2(D'Arcy)
+
+Release 6.4
+
+ There are many new features and improvements in this release. Thanks to our
+ developers and maintainers, nearly every aspect of the system has received
+ some attention since the previous release. Here is a brief, incomplete
+ summary:
+ o Views and rules are now functional thanks to extensive new code in the
+ rewrite rules system from Jan Wieck. He also wrote a chapter on it for the
+ Programmer's Guide.
+ o Jan also contributed a second procedural language, PL/pgSQL, to go with
+ the original PL/pgTCL procedural language he contributed last release.
+ o We have optional multiple-byte character set support from Tatsuo Iishi to
+ complement our existing locale support.
+ o Client/server communications has been cleaned up, with better support for
+ asynchronous messages and interrupts thanks to Tom Lane.
+ o The parser will now perform automatic type coersion to match arguments to
+ available operators and functions, and to match columns and expressions
+ with target columns. This uses a generic mechanism which supports the type
+ extensibility features of Postgres. There is a new chapter in the User's
+ Guide which covers this topic.
+ o Three new data types have been added. Two types, inet and cidr, support
+ various forms of IP network, subnet, and machine addressing. There is now
+ an 8-byte integer type available on some platforms. See the chapter on
+ data types in the User's Guide for details. A fourth type, serial, is now
+ supported by the parser as an amalgam of the int4 type, a sequence, and a
+ unique index.
+ o Several more SQL92-compatible syntax features have been added, including
+ INSERT DEFAULT VALUES
+ o The automatic configuration and installation system has received some
+ attention, and should be more robust for more platforms than it has ever
+ been.
+
+Migration to v6.4
+
+ A dump/restore using pg_dump or pg_dumpall is required for those wishing to
+ migrate data from any previous release of Postgres.
+
+Detailed Change List
+
+ Bug Fixes
+ ---------
+ Fix for a tiny memory leak in PQsetdb/PQfinish(Bryan)
+ Remove char2-16 data types, use char/varchar(Darren)
+ Pqfn not handles a NOTICE message(Anders)
+ Reduced busywaiting overhead for spinlocks with many backends (dg)
+ Stuck spinlock detection (dg)
+ Fix up "ISO-style" timespan decoding and encoding(Thomas)
+ Fix problem with table drop after rollback of transaction(Vadim)
+ Change error message and remove non-functional update message(Vadim)
+ Fix for COPY array checking
+ Fix for SELECT 1 UNION SELECT NULL
+ Fix for buffer leaks in large object calls(Pascal)
+ Change owner from oid to int4 type(Bruce)
+ Fix a bug in the oracle compatibility functions btrim() ltrim() and rtrim()
+ Fix for shared invalidation cache overflow(Massimo)
+ Prevent file descriptor leaks in failed COPY's(Bruce)
+ Fix memory leak in libpgtcl's pg_select(Constantin)
+ Fix problems with username/passwords over 8 characters(Tom)
+ Fix problems with handling of asynchronous NOTIFY in backend(Tom)
+ Fix of many bad system table entries(Tom)
+
+ Enhancements
+ ------------
+ Upgrade ecpg and ecpglib,see src/interfaces/ecpc/ChangeLog(Michael)
+ Show the index used in an EXPLAIN(Zeugswetter)
+ EXPLAIN invokes rule system and shows plan(s) for rewritten queries(Jan)
+ Multi-byte awareness of many data types and functions, via
+ configure(Tatsuo)
+ New configure --with-mb option(Tatsuo)
+ New initdb --pgencoding option(Tatsuo)
+ New createdb -E multibyte option(Tatsuo)
+ Select version(); now returns PostgreSQL version(Jeroen)
+ Libpq now allows asynchronous clients(Tom)
+ Allow cancel from client of backend query(Tom)
+ Psql now cancels query with Control-C(Tom)
+ Libpq users need not issue dummy queries to get NOTIFY messages(Tom)
+ NOTIFY now sends sender's PID, so you can tell whether it was your own(Tom)
+ PGresult struct now includes associated error message, if any(Tom)
+ Define "tz_hour" and "tz_minute" arguments to date_part()(Thomas)
+ Add routines to convert between varchar and bpchar(Thomas)
+ Add routines to allow sizing of varchar and bpchar into target
+ columns(Thomas)
+ Add bit flags to support timezonehour and minute in data retrieval(Thomas)
+ Allow more variations on valid floating point numbers (e.g. ".1",
+ "1e6")(Thomas)
+ Fixes for unary minus parsing with leading spaces(Thomas)
+ Implement TIMEZONE_HOUR, TIMEZONE_MINUTE per SQL92 specs(Thomas)
+ Check for and properly ignore FOREIGN KEY column constraints(Thomas)
+ Define USER as synonym for CURRENT_USER per SQL92 specs(Thomas)
+ Enable HAVING clause but no fixes elsewhere yet.
+ Make "char" type a synonym for "char(1)" (actually implemented as
+ bpchar)(Thomas)
+ Save string type if specified for DEFAULT clause handling(Thomas)
+ Coerce operations involving different data types(Thomas)
+ Allow some index use for columns of different types(Thomas)
+ Add capabilities for automatic type conversion(Thomas)
+ Cleanups for large objects, so file is truncated on open(Peter)
+ Readline cleanups(Tom)
+ Allow psql \f \ to make spaces as delimiter(Bruce)
+ Pass pg_attribute.atttypmod to the frontend for column field
+ lengths(Tom,Bruce)
+ Msql compatibility library in /contrib(Aldrin)
+ Remove the requirement that ORDER/GROUP BY clause identifiers be
+ included in the target list(David)
+ Convert columns to match columns in UNION clauses(Thomas)
+ Remove fork()/exec() and only do fork()(Bruce)
+ Jdbc cleanups(Peter)
+ Show backend status on ps command line(only works on some platforms)(Bruce)
+ Pg_hba.conf now has a sameuser option in the database field
+ Make lo_unlink take oid param, not int4
+ New DISABLE_COMPLEX_MACRO for compilers that can't handle our macros(Bruce)
+ Libpgtcl now handles NOTIFY as a Tcl event, need not send dummy
+ queries(Tom)
+ libpgtcl cleanups(Tom)
+ Add -error option to libpgtcl's pg_result command(Tom)
+ New locale patch, see docs/README/locale(Oleg)
+ Fix for pg_dump so CONSTRAINT and CHECK syntax is correct(ccb)
+ New contrib/lo code for large object orphan removal(Peter)
+ New psql command "SET CLIENT_ENCODING TO 'encoding'" for multi-bytes
+ feature, see /doc/README.mb(Tatsuo)
+ /contrib/noupdate code to revoke update permission on a column
+ Libpq can now be compiled on win32(Magnus)
+ Add PQsetdbLogin() in libpq
+ New 8-byte integer type, checked by configure for OS support(Thomas)
+ Better support for quoted table/column names(Thomas)
+ Surround table and column names with double-quotes in pg_dump(Thomas)
+ PQreset() now works with passwords(Tom)
+ Handle case of GROUP BY target list column number out of range(David)
+ Allow UNION in subselects
+ Add auto-size to screen to \d? commands(Bruce)
+ Use UNION to show all \d? results in one query(Bruce)
+ Add \d? field search feature(Bruce)
+ Pg_dump issues fewer \connect requests(Tom)
+ Make pg_dump -z flag work better, document it in manual page(Tom)
+ Add HAVING clause with full support for subselects and unions(Stephan)
+ Full text indexing routines in contrib/fulltextindex(Maarten)
+ Transaction ids now stored in shared memory(Vadim)
+ New PGCLIENTENCODING when issuing COPY command(Tatsuo)
+ Support for SQL92 syntax "SET NAMES"(Tatsuo)
+ Support for LATIN2-5(Tatsuo)
+ Add UNICODE regression test case(Tatsuo)
+ Lock manager cleanup, new locking modes for LLL(Vadim)
+ Allow index use with OR clauses(Bruce)
+ Allows "SELECT NULL ORDER BY 1;"
+ Explain VERBOSE prints the plan, and now pretty-prints the plan to
+ the postmaster log file(Bruce)
+ Add Indices display to \d command(Bruce)
+ Allow GROUP BY on functions(David)
+ New pg_class.relkind for large objects(Bruce)
+ New way to send libpq NOTICE messages to a different location(Tom)
+ New \w write command to psql(Bruce)
+ New /contrib/findoidjoins scans oid columns to find join
+ relationships(Bruce)
+ Allow binary-compatible indices to be considered when checking for valid
+ indices for restriction clauses containing a constant(Thomas)
+ New ISBN/ISSN code in /contrib/isbn_issn
+ Allow NOT LIKE, IN, NOT IN, BETWEEN, and NOT BETWEEN constraint(Thomas)
+ New rewrite system fixes many problems with rules and views(Jan)
+ * Rules on relations work
+ * Event qualifications on insert/update/delete work
+ * New OLD variable to reference CURRENT, CURRENT will be remove in
+ future
+ * Update rules can reference NEW and OLD in rule
+ qualifications/actions
+ * Insert/update/delete rules on views work
+ * Multiple rule actions are now supported, surrounded by
+ parentheses
+ * Regular users can create views/rules on tables they have RULE
+ permits
+ * Rules and views inherit the permissions on the creator
+ * No rules at the column level
+ * No UPDATE NEW/OLD rules
+ * New pg_tables, pg_indexes, pg_rules and pg_views system views
+ * Only a single action on SELECT rules
+ * Total rewrite overhaul, perhaps for 6.5
+ * handle subselects
+ * handle aggregates on views
+ * handle insert into select from view works
+ System indexes are now multi-key(Bruce)
+ Oidint2, oidint4, and oidname types are removed(Bruce)
+ Use system cache for more system table lookups(Bruce)
+ New backend programming language PL/pgSQL in backend/pl(Jan)
+ New SERIAL data type, auto-creates sequence/index(Thomas)
+ Enable assert checking without a recompile(Massimo)
+ User lock enhancements(Massimo)
+ New setval() command to set sequence value(Massimo)
+ Auto-remove unix socket file on startup if no postmaster running(Massimo)
+ Conditional trace package(Massimo)
+ New UNLISTEN command(Massimo)
+ Psql and libpq now compile under win32 using win32.mak(Magnus)
+ Lo_read no longer stores trailing NULL(Bruce)
+ Identifiers are now truncated to 31 characters internally(Bruce)
+ Createuser options now availble on the command line
+ Code for 64-bit integer supported added, configure tested, int8
+ type(Thomas)
+ Prevent file descriptor leaf from failed COPY(Bruce)
+ New pg_upgrade command(Bruce)
+ Updated /contrib directories(Massimo)
+ New CREATE TABLE DEFAULT VALUES statement available(Thomas)
+ New INSERT INTO TABLE DEFAULT VALUES statement available(Thomas)
+ New DECLARE and FETCH feature(Thomas)
+ libpq's internal structures now not exported(Tom)
+ Allow up to 8 key indexes(Bruce)
+ Remove ARCHIVE keyword, that is no longer used(Thomas)
+ pg_dump -n flag to supress quotes around indentifiers
+ disable system columns for views(Jan)
+ new INET and CIDR types for network addresses(TomH, Paul)
+ no more double quotes in psql output
+ pg_dump now dumps views(Terry)
+ new SET QUERY_LIMIT(Tatsuo,Jan)
+
+ Source Tree Changes
+ -------------------
+ /contrib cleanup(Jun)
+ Inline some small functions called for every row(Bruce)
+ Alpha/linux fixes
+ Hp/UX cleanups(Tom)
+ Multi-byte regression tests(Soonmyung.)
+ Remove --disabled options from configure
+ Define PGDOC to use POSTGRESDIR by default
+ Make regression optional
+ Remove extra braces code to pgindent(Bruce)
+ Add bsdi shared library support(Bruce)
+ New --without-CXX support configure option(Brook)
+ New FAQ_CVS
+ Update backend flowchart in tools/backend(Bruce)
+ Change atttypmod from int16 to int32(Bruce, Tom)
+ Getrusage() fix for platforms that do not have it(Tom)
+ Add PQconnectdb, PGUSER, PGPASSWORD to libpq man page
+ NS32K platform fixes(Phil Nelson, John Buller)
+ Sco 7/UnixWare 2.x fixes(Billy,others)
+ Sparc/Solaris 2.5 fixes(Ryan)
+ Pgbuiltin.3 is obsolete, move to doc files(Thomas)
+ Even more documention(Thomas)
+ Nextstep support(Jacek)
+ Aix support(David)
+ pginterface manual page(Bruce)
+ shared libraries all have version numbers
+ merged all OS-specific shared library defines into one file
+ smarter TCL/TK configuration checking(Billy)
+ smarter perl configuration(Brook)
+ configure uses supplied install-sh if no install script found(Tom)
+ new Makefile.shlib for shared library configuration(Tom)
+
+Release 6.3.2
+
+ This is a bugfix release for 6.3.x. Refer to the release notes for v6.3 for
+ a more complete summary of new features.
+ Summary:
+ o Repairs automatic configuration support for some platforms, including
+ Linux, from breakage inadvertently introduced in v6.3.1.
+ o Correctly handles function calls on the left side of BETWEEN and LIKE
+ clauses.
+ A dump/restore is NOT required for those running 6.3 or 6.3.1. A 'make
+ distclean', 'make', and 'make install' is all that is required. This last
+ step should be performed while the postmaster is not running. You should
+ re-link any custom applications that use Postgres libraries.
+ For upgrades from pre-v6.3 installations, refer to the installation and
+ migration instructions for v6.3.
+
+Detailed Change List
+
+ Changes
+ -------
+ Configure detection improvements for tcl/tk(Brook Milligan, Alvin)
+ Manual page improvements(Bruce)
+ BETWEEN and LIKE fix(Thomas)
+ fix for psql \connect used by pg_dump(Oliver Elphick)
+ New odbc driver
+ pgaccess, version 0.86
+ qsort removed, now uses libc version, cleanups(Jeroen)
+ fix for buffer over-runs detected(Maurice Gittens)
+ fix for buffer overrun in libpgtcl(Randy Kunkee)
+ fix for UNION with DISTINCT or ORDER BY(Bruce)
+ gettimeofday configure check(Doug Winterburn)
+ Fix "indexes not used" bug(Vadim)
+ docs additions(Thomas)
+ Fix for backend memory leak(Bruce)
+ libreadline cleanup(Erwan MAS)
+ Remove DISTDIR(Bruce)
+ Makefile dependency cleanup(Jeroen van Vianen)
+ ASSERT fixes(Bruce)
+
+Release 6.3.1
+
+ Summary:
+ o Additional support for multi-byte character sets.
+ o Repair byte ordering for mixed-endian clients and servers.
+ o Minor updates to allowed SQL syntax.
+ o Improvements to the configuration autodetection for installation.
+ A dump/restore is NOT required for those running 6.3. A 'make distclean',
+ 'make', and 'make install' is all that is required. This last step should
+ be performed while the postmaster is not running. You should re-link any
+ custom applications that use Postgres libraries.
+ For upgrades from pre-v6.3 installations, refer to the installation and
+ migration instructions for v6.3.
+
+Detailed Change List
+
+ Changes
+ -------
+ ecpg cleanup/fixes, now version 1.1(Michael Meskes)
+ pg_user cleanup(Bruce)
+ large object fix for pg_dump and tclsh (alvin)
+ LIKE fix for multiple adjacent underscores
+ fix for redefining builtin functions(Thomas)
+ ultrix4 cleanup
+ upgrade to pg_access 0.83
+ updated CLUSTER manual page
+ multi-byte character set support, see doc/README.mb(Tatsuo)
+ configure --with-pgport fix
+ pg_ident fix
+ big-endian fix for backend communications(Kataoka)
+ SUBSTR() and substring() fix(Jan)
+ several jdbc fixes(Peter)
+ libpgtcl improvements, see libptcl/README(Randy Kunkee)
+ Fix for "Datasize = 0" error(Vadim)
+ Prevent \do from wrapping(Bruce)
+ Remove duplicate Russian character set entries
+ Sunos4 cleanup
+ Allow optional TABLE keyword in LOCK and SELECT INTO(Thomas)
+ CREATE SEQUENCE options to allow a negative integer(Thomas)
+ Add "PASSWORD" as an allowed column identifier(Thomas)
+ Add checks for UNION target fields(Bruce)
+ Fix Alpha port(Dwayne Bailey)
+ Fix for text arrays containing quotes(Doug Gibson)
+ Solaris compile fix(Albert Chin-A-Young)
+ Better identify tcl and tk libs and includes(Bruce)
+
+Release 6.3
+
+ There are many new features and improvements in this release. Here is a
+ brief, incomplete summary:
+ o Many new SQL features, including full SQL92 subselect capability
+ (everything is here but target-list subselects).
+ o Support for client-side environment variables to specify time zone and
+ date style.
+ o Socket interface for client/server connection. This is the default now so
+ you may need to start postmaster with the ?-i? flag.
+ o Better password authorization mechanisms. Default table permissions have
+ changed.
+ o Old-style ?time travel? has been removed. Performance has been improved.
+
+ Note: Bruce Momjian wrote the following notes to introduce the new
+ release.
+
+ There are some general 6.3 issues that I want to mention. These are only
+ the big items that can not be described in one sentence. A review of the
+ detailed changes list is still needed.
+ First, we now have subselects. Now that we have them, I would like to
+ mention that without subselects, SQL is a very limited language. Subselects
+ are a major feature, and you should review your code for places where
+ subselects provide a better solution for your queries. I think you will
+ find that there are more uses for subselects than you may think. Vadim has
+ put us on the big SQL map with subselects, and fully functional ones too.
+ The only thing you can't do with subselects is to use them in the target
+ list.
+ Second, 6.3 uses unix domain sockets rather than TCP/IP by default. To
+ enable connections from other machines, you have to use the new postmaster
+ -i option, and of course edit pg_hba.conf. Also, for this reason, the
+ format of pg_hba.conf has changed.
+ Third, char() fields will now allow faster access than varchar() or text.
+ Specifically, the text and varchar() have a penalty for access to any
+ columns after the first column of this type. char() used to also have this
+ access penalty, but it no longer does. This may suggest that you redesign
+ some of your tables, especially if you have short character columns that
+ you have defined as varchar() or text. This and other changes make 6.3 even
+ faster than earlier releases.
+ We now have passwords definable independent of any Unix file. There are new
+ SQL USER commands. See the pg_hba.conf manual page for more information.
+ There is a new table, pg_shadow, which is used to store user information
+ and user passwords, and it by default only SELECT-able by the postgres
+ super-user. pg_user is now a view of pg_shadow, and is SELECT-able by
+ PUBLIC. You should keep using pg_user in your application without changes.
+ User-created tables now no longer have SELECT permission to PUBLIC by
+ default. This was done because the ANSI standard requires it. You can of
+ course GRANT any permissions you want after the table is created. System
+ tables continue to be SELECT-able by PUBLIC.
+ We also have real deadlock detection code. No more sixty-second timeouts.
+ And the new locking code implements a FIFO better, so there should be less
+ resource starvation during heavy use.
+ Many complaints have been made about inadequate documenation in previous
+ releases. Thomas has put much effort into many new manuals for this
+ release. Check out the doc/ directory.
+ For performance reasons, time travel is gone, but can be implemented using
+ triggers (see pgsql/contrib/spi/README). Please check out the new \d
+ command for types, operators, etc. Also, views have their own permissions
+ now, not based on the underlying tables, so permissions on them have to be
+ set separately. Check /pgsql/interfaces for some new ways to talk to
+ Postgres.
+ This is the first release that really required an explanation for existing
+ users. In many ways, this was necessary because the new release removes
+ many limitations, and the work-arounds people were using are no longer
+ needed.
+
+Migration to v6.3
+
+ A dump/restore using pg_dump or pg_dumpall is required for those wishing to
+ migrate data from any previous release of Postgres.
+
+Detailed Change List
+
+ Bug Fixes
+ ---------
+ Fix binary cursors broken by MOVE implementation(Vadim)
+ Fix for tcl library crash(Jan)
+ Fix for array handling, from Gerhard Hintermayer
+ Fix acl error, and remove duplicate pqtrace(Bruce)
+ Fix psql \e for empty file(Bruce)
+ Fix for textcat on varchar() fields(Bruce)
+ Fix for DBT Sendproc (Zeugswetter Andres)
+ Fix vacuum analyze syntax problem(Bruce)
+ Fix for international identifiers(Tatsuo)
+ Fix aggregates on inherited tables(Bruce)
+ Fix substr() for out-of-bounds data
+ Fix for select 1=1 or 2=2, select 1=1 and 2=2, and select sum(2+2)(Bruce)
+ Fix notty output to show status result. -q option still turns it
+ off(Bruce)
+ Fix for count(*), aggs with views and multiple tables and sum(3)(Bruce)
+ Fix cluster(Bruce)
+ Fix for PQtrace start/stop several times(Bruce)
+ Fix a variety of locking problems like newer lock waiters getting
+ lock before older waiters, and having readlock people not share
+ locks if a writer is waiting for a lock, and waiting writers not
+ getting priority over waiting readers(Bruce)
+ Fix crashes in psql when executing queries from external files(James)
+ Fix problem with multiple order by columns, with the first one having
+ NULL values(Jeroen)
+ Use correct hash table support functions for float8 and int4(Thomas)
+ Re-enable JOIN= option in CREATE OPERATOR statement (Thomas)
+ Change precedence for boolean operators to match expected behavior(Thomas)
+ Generate elog(ERROR) on over-large integer(Bruce)
+ Allow multiple-argument functions in constraint clauses(Thomas)
+ Check boolean input literals for 'true','false','yes','no','1','0'
+ and throw elog(ERROR) if unrecognized(Thomas)
+ Major large objects fix
+ Fix for GROUP BY showing duplicates(Vadim)
+ Fix for index scans in MergeJion(Vadim)
+
+ Enhancements
+ ------------
+ Subselects with EXISTS, IN, ALL, ANY keywords (Vadim, Bruce, Thomas)
+ New User Manual(Thomas, others)
+ Speedup by inlining some frequently-called functions
+ Real deadlock detection, no more timeouts(Bruce)
+ Add SQL92 "constants" CURRENT_DATE, CURRENT_TIME, CURRENT_TIMESTAMP,
+ CURRENT_USER(Thomas)
+ Modify constraint syntax to be SQL92-compliant(Thomas)
+ Implement SQL92 PRIMARY KEY and UNIQUE clauses using indices(Thomas)
+ Recognize SQL92 syntax for FOREIGN KEY. Throw elog notice(Thomas)
+ Allow NOT NULL UNIQUE constraint clause (each allowed separately
+ before)(Thomas)
+ Allow Postgres-style casting ("::") of non-constants(Thomas)
+ Add support for SQL3 TRUE and FALSE boolean constants(Thomas)
+ Support SQL92 syntax for IS TRUE/IS FALSE/IS NOT TRUE/IS NOT FALSE(Thomas)
+ Allow shorter strings for boolean literals (e.g. "t", "tr", "tru")(Thomas)
+ Allow SQL92 delimited identifiers(Thomas)
+ Implement SQL92 binary and hexadecimal string decoding (b'10' and
+ x'1F')(Thomas)
+ Support SQL92 syntax for type coercion of literal strings
+ (e.g. "DATETIME 'now'")(Thomas)
+ Add conversions for int2, int4, and OID types to and from text(Thomas)
+ Use shared lock when building indices(Vadim)
+ Free memory allocated for an user query inside transaction block after
+ this query is done, was turned off in <= 6.2.1(Vadim)
+ New SQL statement CREATE PROCEDURAL LANGUAGE(Jan)
+ New Postgres Procedural Language (PL) backend interface(Jan)
+ Rename pg_dump -H option to -h(Bruce)
+ Add Java support for passwords, European dates(Peter)
+ Use indices for LIKE and ~, !~ operations(Bruce)
+ Add hash functions for datetime and timespan(Thomas)
+ Time Travel removed(Vadim, Bruce)
+ Add paging for \d and \z, and fix \i(Bruce)
+ Add Unix domain socket support to backend and to frontend library(Goran)
+ Implement CREATE DATABASE/WITH LOCATION and initlocation utility(Thomas)
+ Allow more SQL92 and/or Postgres reserved words as column
+ identifiers(Thomas)
+ Augment support for SQL92 SET TIME ZONE...(Thomas)
+ SET/SHOW/RESET TIME ZONE uses TZ backend environment variable(Thomas)
+ Implement SET keyword = DEFAULT and SET TIME ZONE DEFAULT(Thomas)
+ Enable SET TIME ZONE using TZ environment variable(Thomas)
+ Add PGDATESTYLE environment variable to frontend and backend
+ initialization(Thomas)
+ Add PGTZ, PGCOSTHEAP, PGCOSTINDEX, PGRPLANS, PGGEQO
+ frontend library initialization environment variables(Thomas)
+ Regression tests time zone automatically set with "setenv PGTZ
+ PST8PDT"(Thomas)
+ Add pg_description table for info on tables, columns, operators, types, and
+ aggregates(Bruce)
+ Increase 16 char limit on system table/index names to 32 characters(Bruce)
+ Rename system indices(Bruce)
+ Add 'GERMAN' option to SET DATESTYLE(Thomas)
+ Define an "ISO-style" timespan output format with "hh:mm:ss" fields(Thomas)
+ Allow fractional values for delta times (e.g. '2.5 days')(Thomas)
+ Validate numeric input more carefully for delta times(Thomas)
+ Implement day of year as possible input to date_part()(Thomas)
+ Define timespan_finite() and text_timespan() functions(Thomas)
+ Remove archive stuff(Bruce)
+ Allow for a pg_password authentication database that is separate from
+ the system password file(Todd)
+ Dump ACLs, GRANT, REVOKE permissions(Matt)
+ Define text, varchar, and bpchar string length functions(Thomas)
+ Fix Query handling for inheritance, and cost computations(Bruce)
+ Implement CREATE TABLE/AS SELECT (alternative to SELECT/INTO)(Thomas)
+ Allow NOT, IS NULL, IS NOT NULL in constraints(Thomas)
+ Implement UNIONs for SELECT(Bruce)
+ Add UNION, GROUP, DISTINCT to INSERT(Bruce)
+ varchar() stores only necessary bytes on disk(Bruce)
+ Fix for BLOBs(Peter)
+ Mega-Patch for JDBC...see README_6.3 for list of changes(Peter)
+ Remove unused "option" from PQconnectdb()
+ New LOCK command and lock manual page describing deadlocks(Bruce)
+ Add new psql \da, \dd, \df, \do, \dS, and \dT commands(Bruce)
+ Enhance psql \z to show sequences(Bruce)
+ Show NOT NULL and DEFAULT in psql \d table(Bruce)
+ New psql .psqlrc file startup(Andrew)
+ Modify sample startup script in contrib/linux to show syslog(Thomas)
+ New types for IP and MAC addresses in contrib/ip_and_mac(TomH)
+ Unix system time conversions with date/time types in
+ contrib/unixdate(Thomas)
+ Update of contrib stuff(Massimo)
+ Add Unix socket support to DBD::Pg(Goran)
+ New python interface (PyGreSQL 2.0)(D'Arcy)
+ New frontend/backend protocol has a version number, network byte
+ order(Phil)
+ Security features in pg_hba.conf enhanced and documented, many
+ cleanups(Phil)
+ CHAR() now faster access than VARCHAR() or TEXT
+ ecpg embedded SQL preprocessor
+ Reduce system column overhead(Vadmin)
+ Remove pg_time table(Vadim)
+ Add pg_type attribute to identify types that need length (bpchar, varchar)
+ Add report of offending line when COPY command fails
+ Allow VIEW permissions to be set separately from the underlying tables.
+ For security, use GRANT/REVOKE on views as appropriate(Jan)
+ Tables now have no default GRANT SELECT TO PUBLIC. You must
+ explicitly grant such permissions.
+ Clean up tutorial examples(Darren)
+
+ Source Tree Changes
+ -------------------
+ Add new html development tools, and flow chart in /tools/backend
+ Fix for SCO compiles
+ Stratus computer port Robert Gillies
+ Added support for shlib for BSD44_derived & i386_solaris
+ Make configure more automated(Brook)
+ Add script to check regression test results
+ Break parser functions into smaller files, group together(Bruce)
+ Rename heap_create to heap_create_and_catalog, rename heap_creatr
+ to heap_create()(Bruce)
+ Sparc/Linux patch for locking(TomS)
+ Remove PORTNAME and reorganize port-specific stuff(Marc)
+ Add optimizer README file(Bruce)
+ Remove some recursion in optimizer and clean up some code there(Bruce)
+ Fix for NetBSD locking(Henry)
+ Fix for libptcl make(Tatsuo)
+ AIX patch(Darren)
+ Change IS TRUE, IS FALSE, ... to expressions using "=" rather than
+ function calls to istrue() or isfalse() to allow
+ optimization(Thomas)
+ Various fixes NetBSD/Sparc related(TomH)
+ Alpha linux locking(Travis,Ryan)
+ Change elog(WARN) to elog(ERROR)(Bruce)
+ FAQ for FreeBSD(Marc)
+ Bring in the PostODBC source tree as part of our standard
+ distribution(Marc)
+ A minor patch for HP/UX 10 vs 9(Stan)
+ New pg_attribute.atttypmod for type-specific info like varchar
+ length(Bruce)
+ Unixware patches(Billy)
+ New i386 'lock' for spin lock asm(Billy)
+ Support for multiplexed backends is removed
+ Start an OpenBSD port
+ Start an AUX port
+ Start a Cygnus port
+ Add string functions to regression suite(Thomas)
+ Expand a few function names formerly truncated to 16 characters(Thomas)
+ Remove un-needed malloc() calls and replace with palloc()(Bruce)
+
+Release 6.2.1
+
+ v6.2.1 is a bug-fix and usability release on v6.2.
+ Summary:
+ o Allow strings to span lines, per SQL92.
+ o Include example trigger function for inserting user names on table
+ updates.
+ This is a minor bug-fix release on v6.2. For upgrades from pre-v6.2
+ systems, a full dump/reload is required. Refer to the v6.2 release notes
+ for instructions.
+
+Migration from v6.2 to v6.2.1
+
+ This is a minor bug-fix release. A dump/reload is not required from v6.2,
+ but is required from any release prior to v6.2.
+ In upgrading from v6.2, if you choose to dump/reload you will find that
+ avg(money) is now calculated correctly. All other bug fixes take effect
+ upon updating the executables.
+ Another way to avoid dump/reload is to use the following SQL command from
+ psql to update the existing system table:
+
+ update pg_aggregate set aggfinalfn = 'cash_div_flt8'
+ where aggname = 'avg' and aggbasetype = 790;
+
+ This will need to be done to every existing database, including template1.
+
+Detailed Change List
+
+ Changes in this release
+ -----------------------
+ Allow TIME and TYPE column names(Thomas)
+ Allow larger range of true/false as boolean values(Thomas)
+ Support output of "now" and "current"(Thomas)
+ Handle DEFAULT with INSERT of NULL properly(Vadim)
+ Fix for relation reference counts problem in buffer manager(Vadim)
+ Allow strings to span lines, like ANSI(Thomas)
+ Fix for backward cursor with ORDER BY(Vadim)
+ Fix avg(cash) computation(Thomas)
+ Fix for specifying a column twice in ORDER/GROUP BY(Vadim)
+ Documented new libpq function to return affected rows, PQcmdTuples(Bruce)
+ Trigger function for inserting user names for INSERT/UPDATE(Brook Milligan)
+
+Release 6.2
+
+ A dump/restore is required for those wishing to migrate data from previous
+ releases of Postgres.
+
+Migration from v6.1 to v6.2
+
+ This migration requires a complete dump of the 6.1 database and a restore
+ of the database in 6.2.
+ Note that the pg_dump and pg_dumpall utility from 6.2 should be used to
+ dump the 6.1 database.
+
+Migration from v1.x to v6.2
+
+ Those migrating from earlier 1.* releases should first upgrade to 1.09
+ because the COPY output format was improved from the 1.02 release.
+
+Detailed Change List
+
+ Bug Fixes
+ ---------
+ Fix problems with pg_dump for inheritance, sequences, archive tables(Bruce)
+ Fix compile errors on overflow due to shifts, unsigned, and bad prototypes
+ from Solaris(Diab Jerius)
+ Fix bugs in geometric line arithmetic (bad intersection
+ calculations)(Thomas)
+ Check for geometric intersections at endpoints to avoid rounding
+ ugliness(Thomas)
+ Catch non-functional delete attempts(Vadim)
+ Change time function names to be more consistent(Michael Reifenberg)
+ Check for zero divides(Michael Reifenberg)
+ Fix very old bug which made tuples changed/inserted by a commnd
+ visible to the command itself (so we had multiple update of
+ updated tuples, etc)(Vadim)
+ Fix for SELECT null, 'fail' FROM pg_am (Patrick)
+ SELECT NULL as EMPTY_FIELD now allowed(Patrick)
+ Remove un-needed signal stuff from contrib/pginterface
+ Fix OR (where x <> 1 or x isnull didn't return tuples with x NULL) (Vadim)
+ Fix time_cmp function (Vadim)
+ Fix handling of functions with non-attribute first argument in
+ WHERE clauses (Vadim)
+ Fix GROUP BY when order of entries is different from order
+ in target list (Vadim)
+ Fix pg_dump for aggregates without sfunc1 (Vadim)
+
+ Enhancements
+ ------------
+ Default genetic optimizer GEQO parameter is now 8(Bruce)
+ Allow use parameters in target list having aggregates in functions(Vadim)
+ Added JDBC driver as an interface(Adrian & Peter)
+ pg_password utility
+ Return number of tuples inserted/affected by INSERT/UPDATE/DELETE
+ etc.(Vadim)
+ Triggers implemented with CREATE TRIGGER (SQL3)(Vadim)
+ SPI (Server Programming Interface) allows execution of queries inside
+ C-functions (Vadim)
+ NOT NULL implemented (SQL92)(Robson Paniago de Miranda)
+ Include reserved words for string handling, outer joins, and unions(Thomas)
+ Implement extended comments ("/* ... */") using exclusive states(Thomas)
+ Add "//" single-line comments(Bruce)
+ Remove some restrictions on characters in operator names(Thomas)
+ DEFAULT and CONSTRAINT for tables implemented (SQL92)(Vadim & Thomas)
+ Add text concatenation operator and function (SQL92)(Thomas)
+ Support WITH TIME ZONE syntax (SQL92)(Thomas)
+ Support INTERVAL unit TO unit syntax (SQL92)(Thomas)
+ Define types DOUBLE PRECISION, INTERVAL, CHARACTER,
+ and CHARACTER VARYING (SQL92)(Thomas)
+ Define type FLOAT(p) and rudimentary DECIMAL(p,s), NUMERIC(p,s)
+ (SQL92)(Thomas)
+ Define EXTRACT(), POSITION(), SUBSTRING(), and TRIM() (SQL92)(Thomas)
+ Define CURRENT_DATE, CURRENT_TIME, CURRENT_TIMESTAMP (SQL92)(Thomas)
+ Add syntax and warnings for UNION, HAVING, INNER and OUTER JOIN
+ (SQL92)(Thomas)
+ Add more reserved words, mostly for SQL92 compliance(Thomas)
+ Allow hh:mm:ss time entry for timespan/reltime types(Thomas)
+ Add center() routines for lseg, path, polygon(Thomas)
+ Add distance() routines for circle-polygon, polygon-polygon(Thomas)
+ Check explicitly for points and polygons contained within polygons
+ using an axis-crossing algorithm(Thomas)
+ Add routine to convert circle-box(Thomas)
+ Merge conflicting operators for different geometric data types(Thomas)
+ Replace distance operator "<===>" with "<->"(Thomas)
+ Replace "above" operator "!^" with ">^" and "below" operator "!|" with
+ "<^"(Thomas)
+ Add routines for text trimming on both ends, substring, and string
+ position(Thomas)
+ Added conversion routines circle(box) and poly(circle)(Thomas)
+ Allow internal sorts to be stored in memory rather than in files(Bruce &
+ Vadim)
+ Allow functions and operators on internally-identical types to
+ succeed(Bruce)
+ Speed up backend startup after profiling analysis(Bruce)
+ Inline frequently called functions for performance(Bruce)
+ Reduce open() calls(Bruce)
+ psql: Add PAGER for \h and \?,\C fix
+ Fix for psql pager when no tty(Bruce)
+ New entab utility(Bruce)
+ General trigger functions for referential integrity (Vadim)
+ General trigger functions for time travel (Vadim)
+ General trigger functions for AUTOINCREMENT/IDENTITY feature (Vadim)
+ MOVE implementation (Vadim)
+
+ Source Tree Changes
+ -------------------
+ HPUX 10 patches (Vladimir Turin)
+ Added SCO support, (Daniel Harris)
+ mkLinux patches (Tatsuo Ishii)
+ Change geometric box terminology from "length" to "width"(Thomas)
+ Deprecate temporary unstored slope fields in geometric code(Thomas)
+ Remove restart instructions from INSTALL(Bruce)
+ Look in /usr/ucb first for install(Bruce)
+ Fix c++ copy example code(Thomas)
+ Add -o to psql manual page(Bruce)
+ Prevent relname unallocated string length from being copied into
+ database(Bruce)
+ Cleanup for NAMEDATALEN use(Bruce)
+ Fix pg_proc names over 15 chars in output(Bruce)
+ Add strNcpy() function(Bruce)
+ remove some (void) casts that are unnecessary(Bruce)
+ new interfaces directory(Marc)
+ Replace fopen() calls with calls to fd.c functions(Bruce)
+ Make functions static where possible(Bruce)
+ enclose unused functions in #ifdef NOT_USED(Bruce)
+ Remove call to difftime() in timestamp support to fix SunOS(Bruce & Thomas)
+ Changes for Digital Unix
+ Portability fix for pg_dumpall(Bruce)
+ Rename pg_attribute.attnvals to attdisbursion(Bruce)
+ "intro/unix" manual page now "pgintro"(Bruce)
+ "built-in" manual page now "pgbuiltin"(Bruce)
+ "drop" manual page now "drop_table"(Bruce)
+ Add "create_trigger", "drop_trigger" manual pages(Thomas)
+ Add constraints regression test(Vadim & Thomas)
+ Add comments syntax regression test(Thomas)
+ Add PGINDENT and support program(Bruce)
+ Massive commit to run PGINDENT on all *.c and *.h files(Bruce)
+ Files moved to /src/tools directory(Bruce)
+ SPI and Trigger programming guides (Vadim & D'Arcy)
+
+Release 6.1.1
+
+Migration from v6.1 to v6.1.1
+
+ This is a minor bug-fix release. A dump/reload is not required from v6.1,
+ but is required from any release prior to v6.1. Refer to the release notes
+ for v6.1 for more details.
+
+Detailed Change List
+
+ Changes in this release
+ -----------------------
+ fix for SET with options (Thomas)
+ allow pg_dump/pg_dumpall to preserve ownership of all tables/objects(Bruce)
+ new psql \connect option allows changing usernames without changing
+ databases
+ fix for initdb --debug option(Yoshihiko Ichikawa))
+ lextest cleanup(Bruce)
+ hash fixes(Vadim)
+ fix date/time month boundary arithmetic(Thomas)
+ fix timezone daylight handling for some ports(Thomas, Bruce, Tatsuo)
+ timestamp overhauled to use standard functions(Thomas)
+ other code cleanup in date/time routines(Thomas)
+ psql's \d now case-insensitive(Bruce)
+ psql's backslash commands can now have trailing semicolon(Bruce)
+ fix memory leak in psql when using \g(Bruce)
+ major fix for endian handling of communication to server(Thomas, Tatsuo)
+ Fix for Solaris assembler and include files(Yoshihiko Ichikawa)
+ allow underscores in usernames(Bruce)
+ pg_dumpall now returns proper status, portability fix(Bruce)
+
+Release 6.1
+
+ The regression tests have been adapted and extensively modified for the
+ v6.1 release of Postgres.
+ Three new data types (datetime, timespan, and circle) have been added to
+ the native set of Postgres types. Points, boxes, paths, and polygons have
+ had their output formats made consistant across the data types. The polygon
+ output in misc.out has only been spot-checked for correctness relative to
+ the original regression output.
+ Postgres v6.1 introduces a new, alternate optimizer which uses genetic
+ algorithms. These algorithms introduce a random behavior in the ordering of
+ query results when the query contains multiple qualifiers or multiple
+ tables (giving the optimizer a choice on order of evaluation). Several
+ regression tests have been modified to explicitly order the results, and
+ hence are insensitive to optimizer choices. A few regression tests are for
+ data types which are inherently unordered (e.g. points and time intervals)
+ and tests involving those types are explicitly bracketed with set geqo to
+ 'off' and reset geqo.
+ The interpretation of array specifiers (the curly braces around atomic
+ values) appears to have changed sometime after the original regression
+ tests were generated. The current ./expected/*.out files reflect this new
+ interpretation, which may not be correct!
+ The float8 regression test fails on at least some platforms. This is due
+ to differences in implementations of pow() and exp() and the signaling
+ mechanisms used for overflow and underflow conditions.
+ The "random" results in the random test should cause the "random" test to
+ be "failed", since the regression tests are evaluated using a simple diff.
+ However, "random" does not seem to produce random results on my test
+ machine (Linux/gcc/i686).
+
+Migration to v6.1
+
+ This migration requires a complete dump of the 6.0 database and a restore
+ of the database in 6.1.
+ Those migrating from earlier 1.* releases should first upgrade to 1.09
+ because the COPY output format was improved from the 1.02 release.
+
+Detailed Change List
+
+ Bug Fixes
+ ---------
+ packet length checking in library routines
+ lock manager priority patch
+ check for under/over flow of float8(Bruce)
+ multi-table join fix(Vadim)
+ SIGPIPE crash fix(Darren)
+ large object fixes(Sven)
+ allow btree indexes to handle NULLs(Vadim)
+ timezone fixes(D'Arcy)
+ select SUM(x) can return NULL on no rows(Thomas)
+ internal optimizer, executor bug fixes(Vadim)
+ fix problem where inner loop in < or <= has no rows(Vadim)
+ prevent re-commuting join index clauses(Vadim)
+ fix join clauses for multiple tables(Vadim)
+ fix hash, hashjoin for arrays(Vadim)
+ fix btree for abstime type(Vadim)
+ large object fixes(Raymond)
+ fix buffer leak in hash indices (Vadim)
+ fix rtree for use in inner scan (Vadim)
+ fix gist for use in inner scan, cleanups (Vadim, Andrea)
+ avoid unnecessary local buffers allocation (Vadim, Massimo)
+ fix local buffers leak in transaction aborts (Vadim)
+ fix file manager memmory leaks, cleanups (Vadim, Massimo)
+ fix storage manager memmory leaks (Vadim)
+ fix btree duplicates handling (Vadim)
+ fix deleted tuples re-incarnation caused by vacuum (Vadim)
+ fix SELECT varchar()/char() INTO TABLE made zero-length fields(Bruce)
+ many psql, pg_dump, and libpq memory leaks fixed using Purify (Igor)
+
+ Enhancements
+ ------------
+ attribute optimization statistics(Bruce)
+ much faster new btree bulk load code(Paul)
+ BTREE UNIQUE added to bulk load code(Vadim)
+ new lock debug code(Massimo)
+ massive changes to libpg++(Leo)
+ new GEQO optimizer speeds table multi-table optimization(Martin)
+ new WARN message for non-unique insert into unique key(Marc)
+ update x=-3, no spaces, now valid(Bruce)
+ remove case-sensitive identifier handling(Bruce,Thomas,Dan)
+ debug backend now pretty-prints tree(Darren)
+ new Oracle character functions(Edmund)
+ new plaintext password functions(Dan)
+ no such class or insufficient privilege changed to distinct messages(Dan)
+ new ANSI timestamp function(Dan)
+ new ANSI Time and Date types (Thomas)
+ move large chunks of data in backend(Martin)
+ multi-column btree indexes(Vadim)
+ new SET var TO value command(Martin)
+ update transaction status on reads(Dan)
+ new locale settings for character types(Oleg)
+ new SEQUENCE serial number generator(Vadim)
+ GROUP BY function now possible(Vadim)
+ re-organize regression test(Thomas,Marc)
+ new optimizer operation weights(Vadim)
+ new psql \z grant/permit option(Marc)
+ new MONEY data type(D'Arcy,Thomas)
+ tcp socket communication speed improved(Vadim)
+ new VACUUM option for attribute statistics, and for certain columns (Vadim)
+ many geometric type improvements(Thomas,Keith)
+ additional regression tests(Thomas)
+ new datestyle variable(Thomas,Vadim,Martin)
+ more comparison operators for sorting types(Thomas)
+ new conversion functions(Thomas)
+ new more compact btree format(Vadim)
+ allow pg_dumpall to preserve database ownership(Bruce)
+ new SET GEQO=# and R_PLANS variable(Vadim)
+ old (!GEQO) optimizer can use right-sided plans (Vadim)
+ typechecking improvement in SQL parser(Bruce)
+ new SET, SHOW, RESET commands(Thomas,Vadim)
+ new \connect database USER option
+ new destroydb -i option (Igor)
+ new \dt and \di psql commands (Darren)
+ SELECT "\n" now escapes newline (A. Duursma)
+ new geometry conversion functions from old format (Thomas)
+
+ Source tree changes
+ -------------------
+ new configuration script(Marc)
+ readline configuration option added(Marc)
+ OS-specific configuration options removed(Marc)
+ new OS-specific template files(Marc)
+ no more need to edit Makefile.global(Marc)
+ re-arrange include files(Marc)
+ nextstep patches (Gregor Hoffleit)
+ removed WIN32-specific code(Bruce)
+ removed postmaster -e option, now only postgres -e option (Bruce)
+ merge duplicate library code in front/backends(Martin)
+ now works with eBones, international Kerberos(Jun)
+ more shared library support
+ c++ include file cleanup(Bruce)
+ warn about buggy flex(Bruce)
+ DG-UX, Ultrix, Irix, AIX portability fixes
+
+Release v6.0
+
+ A dump/restore is required for those wishing to migrate data from previous
+ releases of Postgres.
+
+Migration from v1.09 to v6.0
+
+ This migration requires a complete dump of the 1.09 database and a restore
+ of the database in 6.0.
+
+Migration from pre-v1.09 to v6.0
+
+ Those migrating from earlier 1.* releases should first upgrade to 1.09
+ because the COPY output format was improved from the 1.02 release.
+
+Detailed Change List
+
+ Bug Fixes
+ ---------
+ ALTER TABLE bug - running postgress process needs to re-read table
+ definition
+ Allow vacuum to be run on one table or entire database(Bruce)
+ Array fixes
+ Fix array over-runs of memory writes(Kurt)
+ Fix elusive btree range/non-range bug(Dan)
+ Fix for hash indexes on some types like time and date
+ Fix for pg_log size explosion
+ Fix permissions on lo_export()(Bruce)
+ Fix unitialized reads of memory(Kurt)
+ Fixed ALTER TABLE ... char(3) bug(Bruce)
+ Fixed a few small memory leaks
+ Fixed EXPLAIN handling of options and changed full_path option name
+ Fixed output of group acl permissions
+ Memory leaks (hunt and destroy with tools like Purify(Kurt)
+ Minor improvements to rules system
+ NOTIFY fixes
+ New asserts for run-checking
+ Overhauled parser/analyze code to properly report errors and increase speed
+ Pg_dump -d now handles NULL's properly(Bruce)
+ Prevent SELECT NULL from crashing server (Bruce)
+ Properly report errors when INSERT ... SELECT columns did not match
+ Properly report errors when insert column names were not correct
+ Psql \g filename now works(Bruce)
+ Psql fixed problem with multiple statements on one line with multiple
+ outputs
+ Removed duplicate system oid's
+ SELECT * INTO TABLE . GROUP/ORDER BY gives unlink error if table
+ exists(Bruce)
+ Several fixes for queries that crashed the backend
+ Starting quote in insert string errors(Bruce)
+ Submitting an empty query now returns empty status, not just " "
+ query(Bruce)
+
+ Enhancements
+ ------------
+ Add EXPLAIN manual page(Bruce)
+ Add UNIQUE index capability(Dan)
+ Add hostname/user level access control rather than just hostname and user
+ Add synonym of != for <>(Bruce)
+ Allow "select oid,* from table"
+ Allow BY,ORDER BY to specify columns by number, or by non-alias
+ table.column(Bruce)
+ Allow COPY from the frontend(Bryan)
+ Allow GROUP BY to use alias column name(Bruce)
+ Allow actual compression, not just reuse on the same page(Vadim)
+ Allow installation-configuration option to auto-add all local users(Bryan)
+ Allow libpq to distinguish between text value '' and null(Bruce)
+ Allow non-postgres users with createdb privs to destroydb's
+ Allow restriction on who can create C functions(Bryan)
+ Allow restriction on who can do backend COPY(Bryan)
+ Can shrink tables, pg_time and pg_log(Vadim & Erich)
+ Change debug level 2 to print queries only, changed debug heading
+ layout(Bruce)
+ Change default decimal constant representation from float4 to float8(Bruce)
+ European date format now set when postmaster is started
+ Execute lowercase function names if not found with exact case
+ Fixes for aggregate/GROUP processing, allow 'select sum(func(x),sum(x+y)
+ from z'
+ Gist now included in the distrubution(Marc)
+ Idend authentication of local users(Bryan)
+ Implement BETWEEN qualifier(Bruce)
+ Implement IN qualifier(Bruce)
+ Libpq has PQgetisnull()(Bruce)
+ Libpq++ improvements
+ New options to initdb(Bryan)
+ Pg_dump allow dump of oid's(Bruce)
+ Pg_dump create indexes after tables are loaded for speed(Bruce)
+ Pg_dumpall dumps all databases, and the user table
+ Pginterface additions for NULL values(Bruce)
+ Prevent postmaster from being run as root
+ Psql \h and \? is now readable(Bruce)
+ Psql allow backslashed, semicolons anywhere on the line(Bruce)
+ Psql changed command prompt for lines in query or in quotes(Bruce)
+ Psql char(3) now displays as (bp)char in \d output(Bruce)
+ Psql return code now more accurate(Bryan?)
+ Psql updated help syntax(Bruce)
+ Re-visit and fix vacuum(Vadim)
+ Reduce size of regression diffs, remove timezone name difference(Bruce)
+ Remove compile-time parameters to enable binary distributions(Bryan)
+ Reverse meaning of HBA masks(Bryan)
+ Secure Authentication of local users(Bryan)
+ Speed up vacuum(Vadim)
+ Vacuum now had VERBOSE option(Bruce)
+
+ Source tree changes
+ -------------------
+ All functions now have prototypes that are compared against the calls
+ Allow asserts to be disabled easly from Makefile.global(Bruce)
+ Change oid constants used in code to #define names
+ Decoupled sparc and solaris defines(Kurt)
+ Gcc -Wall compiles cleanly with warnings only from unfixable constructs
+ Major include file reorganization/reduction(Marc)
+ Make now stops on compile failure(Bryan)
+ Makefile restructuring(Bryan, Marc)
+ Merge bsdi_2_1 to bsdi(Bruce)
+ Monitor program removed
+ Name change from Postgres95 to PostgreSQL
+ New config.h file(Marc, Bryan)
+ PG_VERSION now set to 6.0 and used by postmaster
+ Portability additions, including Ultrix, DG/UX, AIX, and Solaris
+ Reduced the number of #define's, centeralized #define's
+ Remove duplicate OIDS in system tables(Dan)
+ Remove duplicate system catalog info or report mismatches(Dan)
+ Removed many os-specific #define's
+ Restructured object file generation/location(Bryan, Marc)
+ Restructured port-specific file locations(Bryan, Marc)
+ Unused/uninialized variables corrected
+
+Release v1.09
+
+ Sorry, we stopped keeping track of changes from 1.02 to 1.09. Some of the
+ changes listed in 6.0 were actually included in the 1.02.1 to 1.09
+ releases.
+
+Release v1.02
+
+Migration from v1.02 to v1.02.1
+
+ Here is a new migration file for 1.02.1. It includes the 'copy' change and
+ a script to convert old ascii files.
+
+ Note: The following notes are for the benefit of users who want to
+ migrate databases from postgres95 1.01 and 1.02 to postgres95 1.02.1.
+ If you are starting afresh with postgres95 1.02.1 and do not need to
+ migrate old databases, you do not need to read any further.
+
+ In order to upgrade older postgres95 version 1.01 or 1.02 databases to
+ version 1.02.1, the following steps are required:
+
+ 1. Start up a new 1.02.1 postmaster
+ 2. Add the new built-in functions and operators of 1.02.1 to 1.01 or 1.02
+ databases. This is done by running the new 1.02.1 server against your own
+ 1.01 or 1.02 database and applying the queries attached at the end of
+ thie file. This can be done easily through psql. If your 1.01 or 1.02
+ database is named "testdb" and you have cut the commands from the end of
+ this file and saved them in addfunc.sql:
+ % psql testdb -f addfunc.sql
+ Those upgrading 1.02 databases will get a warning when executing the last
+ two statements in the file because they are already present in 1.02. This
+ is not a cause for concern.
+
+Dump/Reload Procedure
+
+ If you are trying to reload a pg_dump or text-mode 'copy tablename to
+ stdout' generated with a previous version, you will need to run the
+ attached sed script on the ASCII file before loading it into the database.
+ The old format used '.' as end-of-data, while '\.' is now the end-of-data
+ marker. Also, empty strings are now loaded in as '' rather than NULL. See
+ the copy manual page for full details.
+
+ sed 's/^\.$/\\./g' <in_file >out_file
+
+ If you are loading an older binary copy or non-stdout copy, there is no
+ end-of-data character, and hence no conversion necessary.
+
+ -- following lines added by agc to reflect the case-insensitive
+ -- regexp searching for varchar (in 1.02), and bpchar (in 1.02.1)
+ create operator ~* (leftarg = bpchar, rightarg = text, procedure =
+ texticregexeq);
+ create operator !~* (leftarg = bpchar, rightarg = text, procedure =
+ texticregexne);
+ create operator ~* (leftarg = varchar, rightarg = text, procedure =
+ texticregexeq);
+ create operator !~* (leftarg = varchar, rightarg = text, procedure =
+ texticregexne);
+
+Detailed Change List
+
+ Source code maintenance and development
+ * worldwide team of volunteers
+ * the source tree now in CVS at ftp.ki.net
+
+ Enhancements
+ * psql (and underlying libpq library) now has many more options for
+ formatting output, including HTML
+ * pg_dump now output the schema and/or the data, with many fixes to
+ enhance completeness.
+ * psql used in place of monitor in administration shell scripts.
+ monitor to be depreciated in next release.
+ * date/time functions enhanced
+ * NULL insert/update/comparison fixed/enhanced
+ * TCL/TK lib and shell fixed to work with both tck7.4/tk4.0 and
+ tcl7.5/tk4.1
+
+ Bug Fixes (almost too numerous to mention)
+ * indexes
+ * storage management
+ * check for NULL pointer before dereferencing
+ * Makefile fixes
+
+ New Ports
+ * added SolarisX86 port
+ * added BSDI 2.1 port
+ * added DGUX port
+
+Release v1.01
+
+Migration from v1.0 to v1.01
+
+ The following notes are for the benefit of users who want to migrate
+ databases from postgres95 1.0 to postgres95 1.01.
+ If you are starting afresh with postgres95 1.01 and do not need to migrate
+ old databases, you do not need to read any further.
+ In order to postgres95 version 1.01 with databases created with postgres95
+ version 1.0, the following steps are required:
+
+ 1. Set the definition of NAMEDATALEN in src/Makefile.global to 16 and
+ OIDNAMELEN to 20.
+ 2. Decide whether you want to use Host based authentication.
+ a. If you do, you must create a file name "pg_hba" in your top-level
+ data directory (typically the value of your $PGDATA).
+ src/libpq/pg_hba shows an example syntax.
+ b. If you do not want host-based authentication, you can comment out
+ the line
+ HBA = 1
+ in src/Makefile.global
+ Note that host-based authentication is turned on by default, and if
+ you do not take steps A or B above, the out-of-the-box 1.01 will not
+ allow you to connect to 1.0 databases.
+ 3. Compile and install 1.01, but DO NOT do the initdb step.
+ 4. Before doing anything else, terminate your 1.0 postmaster, and backup
+ your existing $PGDATA directory.
+ 5. Set your PGDATA environment variable to your 1.0 databases, but set up
+ path up so that 1.01 binaries are being used.
+ 6. Modify the file $PGDATA/PG_VERSION from 5.0 to 5.1
+ 7. Start up a new 1.01 postmaster
+ 8. Add the new built-in functions and operators of 1.01 to 1.0 databases.
+ This is done by running the new 1.01 server against your own 1.0 database
+ and applying the queries attached and saving in the file 1.0_to_1.01.sql.
+ This can be done easily through psql. If your 1.0 database is name
+ "testdb":
+ % psql testdb -f 1.0_to_1.01.sql
+ and then execute the following commands (cut and paste from here):
+ -- add builtin functions that are new to 1.01
+
+ create function int4eqoid (int4, oid) returns bool as 'foo'
+ language 'internal';
+ create function oideqint4 (oid, int4) returns bool as 'foo'
+ language 'internal';
+ create function char2icregexeq (char2, text) returns bool as 'foo'
+ language 'internal';
+ create function char2icregexne (char2, text) returns bool as 'foo'
+ language 'internal';
+ create function char4icregexeq (char4, text) returns bool as 'foo'
+ language 'internal';
+ create function char4icregexne (char4, text) returns bool as 'foo'
+ language 'internal';
+ create function char8icregexeq (char8, text) returns bool as 'foo'
+ language 'internal';
+ create function char8icregexne (char8, text) returns bool as 'foo'
+ language 'internal';
+ create function char16icregexeq (char16, text) returns bool as 'foo'
+ language 'internal';
+ create function char16icregexne (char16, text) returns bool as 'foo'
+ language 'internal';
+ create function texticregexeq (text, text) returns bool as 'foo'
+ language 'internal';
+ create function texticregexne (text, text) returns bool as 'foo'
+ language 'internal';
+
+ -- add builtin functions that are new to 1.01
+
+ create operator = (leftarg = int4, rightarg = oid, procedure =
+ int4eqoid);
+ create operator = (leftarg = oid, rightarg = int4, procedure =
+ oideqint4);
+ create operator ~* (leftarg = char2, rightarg = text, procedure =
+ char2icregexeq);
+ create operator !~* (leftarg = char2, rightarg = text, procedure =
+ char2icregexne);
+ create operator ~* (leftarg = char4, rightarg = text, procedure =
+ char4icregexeq);
+ create operator !~* (leftarg = char4, rightarg = text, procedure =
+ char4icregexne);
+ create operator ~* (leftarg = char8, rightarg = text, procedure =
+ char8icregexeq);
+ create operator !~* (leftarg = char8, rightarg = text, procedure =
+ char8icregexne);
+ create operator ~* (leftarg = char16, rightarg = text, procedure =
+ char16icregexeq);
+ create operator !~* (leftarg = char16, rightarg = text, procedure =
+ char16icregexne);
+ create operator ~* (leftarg = text, rightarg = text, procedure =
+ texticregexeq);
+ create operator !~* (leftarg = text, rightarg = text, procedure =
+ texticregexne);
+
+Detailed Change List
+
+ Incompatibilities:
+ * 1.01 is backwards compatible with 1.0 database provided the user
+ follow the steps outlined in the MIGRATION_from_1.0_to_1.01 file.
+ If those steps are not taken, 1.01 is not compatible with 1.0 database.
+
+ Enhancements:
+ * added PQdisplayTuples() to libpq and changed monitor and psql to use it
+ * added NeXT port (requires SysVIPC implementation)
+ * added CAST .. AS ... syntax
+ * added ASC and DESC keywords
+ * added 'internal' as a possible language for CREATE FUNCTION
+ internal functions are C functions which have been statically linked
+ into the postgres backend.
+ * a new type "name" has been added for system identifiers (table names,
+ attribute names, etc.) This replaces the old char16 type. The
+ of name is set by the NAMEDATALEN #define in src/Makefile.global
+ * a readable reference manual that describes the query language.
+ * added host-based access control. A configuration file ($PGDATA/pg_hba)
+ is used to hold the configuration data. If host-based access control
+ is not desired, comment out HBA=1 in src/Makefile.global.
+ * changed regex handling to be uniform use of Henry Spencer's regex code
+ regardless of platform. The regex code is included in the distribution
+ * added functions and operators for case-insensitive regular expressions.
+ The operators are ~* and !~*.
+ * pg_dump uses COPY instead of SELECT loop for better performance
+
+ Bug fixes:
+ * fixed an optimizer bug that was causing core dumps when
+ functions calls were used in comparisons in the WHERE clause
+ * changed all uses of getuid to geteuid so that effective uids are used
+ * psql now returns non-zero status on errors when using -c
+ * applied public patches 1-14
+
+Release v1.0
+
+Detailed Change List
+
+ Copyright change:
+ * The copyright of Postgres 1.0 has been loosened to be freely modifiable
+ and modifiable for any purpose. Please read the COPYRIGHT file.
+ Thanks to Professor Michael Stonebraker for making this possible.
+
+ Incompatibilities:
+ * date formats have to be MM-DD-YYYY (or DD-MM-YYYY if you're using
+ EUROPEAN STYLE). This follows SQL-92 specs.
+ * "delimiters" is now a keyword
+
+ Enhancements:
+ * sql LIKE syntax has been added
+ * copy command now takes an optional USING DELIMITER specification.
+ delimiters can be any single-character string.
+ * IRIX 5.3 port has been added.
+ Thanks to Paul Walmsley and others.
+ * updated pg_dump to work with new libpq
+ * \d has been added psql
+ Thanks to Keith Parks
+ * regexp performance for architectures that use POSIX regex has been
+ improved due to caching of precompiled patterns.
+ Thanks to Alistair Crooks
+ * a new version of libpq++
+ Thanks to William Wanders
+
+ Bug fixes:
+ * arbitrary userids can be specified in the createuser script
+ * \c to connect to other databases in psql now works.
+ * bad pg_proc entry for float4inc() is fixed
+ * users with usecreatedb field set can now create databases without
+ having to be usesuper
+ * remove access control entries when the entry no longer has any
+ permissions
+ * fixed non-portable datetimes implementation
+ * added kerberos flags to the src/backend/Makefile
+ * libpq now works with kerberos
+ * typographic errors in the user manual have been corrected.
+ * btrees with multiple index never worked, now we tell you they don't
+ work when you try to use them
+
+Postgres95 Beta 0.03
+
+Detailed Change List
+
+ Incompatible changes:
+ * BETA-0.3 IS INCOMPATIBLE WITH DATABASES CREATED WITH PREVIOUS VERSIONS
+ (due to system catalog changes and indexing structure changes).
+ * double-quote (") is deprecated as a quoting character for string
+ literals;
+ you need to convert them to single quotes (').
+ * name of aggregates (eg. int4sum) are renamed in accordance with the
+ SQL standard (eg. sum).
+ * CHANGE ACL syntax is replaced by GRANT/REVOKE syntax.
+ * float literals (eg. 3.14) are now of type float4 (instead of float8 in
+ previous releases); you might have to do typecasting if you depend on it
+ being of type float8. If you neglect to do the typecasting and you
+ assign
+ a float literal to a field of type float8, you may get incorrect values
+ stored!
+ * LIBPQ has been totally revamped so that frontend applications
+ can connect to multiple backends
+ * the usesysid field in pg_user has been changed from int2 to int4 to
+ allow wider range of Unix user ids.
+ * the netbsd/freebsd/bsd o/s ports have been consolidated into a
+ single BSD44_derived port. (thanks to Alistair Crooks)
+
+ SQL standard-compliance (the following details changes that makes
+ postgres95
+ more compliant to the SQL-92 standard):
+ * the following SQL types are now built-in: smallint, int(eger), float,
+ real,
+ char(N), varchar(N), date and time.
+
+ The following are aliases to existing postgres types:
+ smallint -> int2
+ integer, int -> int4
+ float, real -> float4
+ char(N) and varchar(N) are implemented as truncated text types. In
+ addition, char(N) does blank-padding.
+ * single-quote (') is used for quoting string literals; '' (in addition to
+ \') is supported as means of inserting a single quote in a string
+ * SQL standard aggregate names (MAX, MIN, AVG, SUM, COUNT) are used
+ (Also, aggregates can now be overloaded, i.e. you can define your
+ own MAX aggregate to take in a user-defined type.)
+ * CHANGE ACL removed. GRANT/REVOKE syntax added.
+ - Privileges can be given to a group using the "GROUP" keyword.
+ For example:
+ GRANT SELECT ON foobar TO GROUP my_group;
+ The keyword 'PUBLIC' is also supported to mean all users.
+
+ Privileges can only be granted or revoked to one user or group
+ at a time.
+
+ "WITH GRANT OPTION" is not supported. Only class owners can change
+ access control
+ - The default access control is to to grant users readonly access.
+ You must explicitly grant insert/update access to users. To change
+ this, modify the line in
+ src/backend/utils/acl.h
+ that defines ACL_WORLD_DEFAULT
+
+ Bug fixes:
+ * the bug where aggregates of empty tables were not run has been fixed.
+ Now,
+ aggregates run on empty tables will return the initial conditions of the
+ aggregates. Thus, COUNT of an empty table will now properly return 0.
+ MAX/MIN of an empty table will return a tuple of value NULL.
+ * allow the use of \; inside the monitor
+ * the LISTEN/NOTIFY asynchronous notification mechanism now work
+ * NOTIFY in rule action bodies now work
+ * hash indices work, and access methods in general should perform better.
+ creation of large btree indices should be much faster. (thanks to Paul
+ Aoki)
+
+ Other changes and enhancements:
+ * addition of an EXPLAIN statement used for explaining the query execution
+ plan (eg. "EXPLAIN SELECT * FROM EMP" prints out the execution plan for
+ the query).
+ * WARN and NOTICE messages no longer have timestamps on them. To turn on
+ timestamps of error messages, uncomment the line in
+ src/backend/utils/elog.h:
+ /* define ELOG_TIMESTAMPS */
+ * On an access control violation, the message
+ "Either no such class or insufficient privilege"
+ will be given. This is the same message that is returned when
+ a class is not found. This dissuades non-privileged users from
+ guessing the existence of privileged classes.
+ * some additional system catalog changes have been made that are not
+ visible to the user.
+
+ libpgtcl changes:
+ * The -oid option has been added to the "pg_result" tcl command.
+ pg_result -oid returns oid of the last tuple inserted. If the
+ last command was not an INSERT, then pg_result -oid returns "".
+ * the large object interface is available as pg_lo* tcl commands:
+ pg_lo_open, pg_lo_close, pg_lo_creat, etc.
+
+ Portability enhancements and New Ports:
+ * flex/lex problems have been cleared up. Now, you should be able to use
+ flex instead of lex on any platforms. We no longer make assumptions of
+ what lexer you use based on the platform you use.
+ * The Linux-ELF port is now supported. Various configuration have been
+ tested: The following configuration is known to work:
+ kernel 1.2.10, gcc 2.6.3, libc 4.7.2, flex 2.5.2, bison 1.24
+ with everything in ELF format,
+
+ New utilities:
+ * ipcclean added to the distribution
+ ipcclean usually does not need to be run, but if your backend crashes
+ and leaves shared memory segments hanging around, ipcclean will
+ clean them up for you.
+
+ New documentation:
+ * the user manual has been revised and libpq documentation added.
+
+Postgres95 Beta 0.02
+
+Detailed Change List
+
+ Incompatible changes:
+ * The SQL statement for creating a database is 'CREATE DATABASE' instead
+ of 'CREATEDB'. Similarly, dropping a database is 'DROP DATABASE' instead
+ of 'DESTROYDB'. However, the names of the executables 'createdb' and
+ 'destroydb' remain the same.
+
+ New tools:
+ * pgperl - a Perl (4.036) interface to Postgres95
+ * pg_dump - a utility for dumping out a postgres database into a
+ script file containing query commands. The script files are in a
+ ASCII
+ format and can be used to reconstruct the database, even on other
+ machines and other architectures. (Also good for converting
+ a Postgres 4.2 database to Postgres95 database.)
+
+ The following ports have been incorporated into postgres95-beta-0.02:
+ * the NetBSD port by Alistair Crooks
+ * the AIX port by Mike Tung
+ * the Windows NT port by Jon Forrest (more stuff but not done yet)
+ * the Linux ELF port by Brian Gallew
+
+ The following bugs have been fixed in postgres95-beta-0.02:
+ * new lines not escaped in COPY OUT and problem with COPY OUT when first
+ attribute is a '.'
+ * cannot type return to use the default user id in createuser
+ * SELECT DISTINCT on big tables crashes
+ * Linux installation problems
+ * monitor doesn't allow use of 'localhost' as PGHOST
+ * psql core dumps when doing \c or \l
+ * the "pgtclsh" target missing from src/bin/pgtclsh/Makefile
+ * libpgtcl has a hard-wired default port number
+ * SELECT DISTINCT INTO TABLE hangs
+ * CREATE TYPE doesn't accept 'variable' as the internallength
+ * wrong result using more than 1 aggregate in a SELECT
+
+Postgres95 Beta 0.01
+
+ Initial release.
+
+Timing Results
+
+ These timing results are from running the regression test with the
+ commands
+
+ % cd src/test/regress
+ % make all
+ % time make runtest
+
+
+
+ Timing under Linux 2.0.27 seems to have a roughly 5% variation from run to
+ run, presumably due to the scheduling vagaries of multitasking systems.
+
+v6.5
+
+ As has been the case for previous releases, timing between releases is not
+ directly comparable since new regression tests have been added. In general,
+ v6.5 is faster than previous releases.
+ Timing with fsync() disabled:
+
+ Time System
+ 02:00 Dual Pentium Pro 180, 224MB, UW-SCSI, Linux 2.0.36, gcc 2.7.2.3
+ -O2 -m486
+
+
+
+ Timing with fsync() enabled:
+
+ Time System
+ 04:21 Dual Pentium Pro 180, 224MB, UW-SCSI, Linux 2.0.36, gcc 2.7.2.3
+ -O2 -m486
+
+
+ For the linux system above, using UW-SCSI disks rather than (older) IDE
+ disks leads to a 50% improvement in speed on the regression test.
+
+v6.4beta
+
+ The times for this release are not directly comparable to those for
+ previous releases since some additional regression tests have been
+ included. In general, however, v6.4 should be slightly faster than the
+ previous release (thanks, Bruce!).
+
+ Time System
+ 02:26 Dual Pentium Pro 180, 96MB, UW-SCSI, Linux 2.0.30, gcc 2.7.2.1 -O2
+ -m486
+
+v6.3
+
+ The times for this release are not directly comparable to those for
+ previous releases since some additional regression tests have been included
+ and some obsolete tests involving time travel have been removed. In
+ general, however, v6.3 is substantially faster than previous releases
+ (thanks, Bruce!).
+
+ Time System
+ 02:30 Dual Pentium Pro 180, 96MB, UW-SCSI, Linux 2.0.30, gcc 2.7.2.1 -O2
+ -m486
+ 04:12 Dual Pentium Pro 180, 96MB, EIDE, Linux 2.0.30, gcc 2.7.2.1 -O2
+ -m486
+
+v6.1
+
+ Time System
+ 06:12 Pentium Pro 180, 32MB, EIDE, Linux 2.0.30, gcc 2.7.2 -O2 -m486
+ 12:06 P-100, 48MB, Linux 2.0.29, gcc
+ 39:58 Sparc IPC 32MB, Solaris 2.5, gcc 2.7.2.1 -O -g
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