416 lines
18 KiB
Plaintext
416 lines
18 KiB
Plaintext
PostgreSQL 6.0 Wed Jan 29 00:19:54 EST 1997
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-------------------------------------------------------------
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A dump/restore is required for those wishing to migrate data from
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previous releases of PostgreSQL.
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Major contributors:
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-------------------
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Bruce is Bruce Momjian<maillist@candle.pha.pa.us>
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Bryan is Bryan Henderson<bryanh@giraffe.netgate.net>
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Dan is Dan McGuirk <mcguirk@indirect.com>
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Darren is Darren King <darrenk@insightdist.com>
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Edmund is Edmund Mergl <E.Mergl@bawue.de>
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Erich Stamberger <eberger@gewi.kfunigraz.ac.at>
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Kurt is "Kurt J. Lidl" <lidl@va.pubnix.com>
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Martin is Martin S. Utesch <utesch@aut.tu-freiberg.de>
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Vadim is "Vadim B. Mikheev" <vadim@sable.krasnoyarsk.su>
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Vivek is Vivek Khera <khera@kci.kciLink.com>
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Bug Fixes
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---------
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ALTER TABLE bug - running postgress process needs to re-read table definition
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Allow vacuum to be run on one table or entire database(Bruce)
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Array fixes
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Fix array over-runs of memory writes(Kurt)
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Fix elusive btree range/non-range bug(Dan)
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Fix for hash indexes on some types like time and date
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Fix for pg_log size explosion
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Fix permissions on lo_export()(Bruce)
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Fix unitialized reads of memory(Kurt)
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Fixed ALTER TABLE ... char(3) bug(Bruce)
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Fixed a few small memory leaks
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Fixed EXPLAIN handling of options and changed full_path option name
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Fixed output of group acl permissions
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Memory leaks (hunt and destroy with tools like Purify(Kurt)
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Minor improvements to rules system
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NOTIFY fixes
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New asserts for run-checking
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Overhauled parser/analyze code to properly report errors and increase speed
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Pg_dump -d now handles NULL's properly(Bruce)
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Prevent SELECT NULL from crashing server (Bruce)
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Properly report errors when INSERT ... SELECT columns did not match
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Properly report errors when insert column names were not correct
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Psql \g filename now works(Bruce)
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Psql fixed problem with multiple statements on one line with multiple outputs
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Removed duplicate system oid's
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SELECT * INTO TABLE . GROUP/ORDER BY gives unlink error if table exists(Bruce)
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Several fixes for queries that crashed the backend
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Starting quote in insert string errors(Bruce)
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Submiting an empty query now returns empty status, not just " " query(Bruce)
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Enhancements
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------------
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Add EXPLAIN manual page(Bruce)
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Add UNIQUE index capability(Dan)
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Add hostname/user level access control rather than just hostname and user
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Add synonym of != for <>(Bruce)
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Allow "select oid,* from table"
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Allow BY,ORDER BY to specify columns by number, or by non-alias table.column(Bruce)
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Allow COPY from the frontend(Bryan)
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Allow GROUP BY to use alias column name(Bruce)
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Allow actual compression, not just reuse on the same page(Vadim)
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Allow installation-configuration option to auto-add all local users(Bryan)
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Allow libpq to distinguish between text value '' and null(Bruce)
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Allow non-postgres users with createdb privs to destroydb's
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Allow restriction on who can create C functions(Bryan)
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Allow restriction on who can do backend COPY(Bryan)
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Can shrink tables, pg_time and pg_log(Vadim & Erich)
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Change debug level 2 to print queries only, changed debug heading layout(Bruce)
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Change default decimal constant representation from float4 to float8(Bruce)
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European date format now set when postmaster is started
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Execute lowercase function names if not found with exact case
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Fixes for aggregate/GROUP processing, allow 'select sum(func(x),sum(x+y) from z'
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Gist now included in the distrubution(Marc)
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Idend authentication of local users(Bryan)
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Implement BETWEEN qualifier(Bruce)
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Implement IN qualifier(Bruce)
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Libpq has PQgetisnull()(Bruce)
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Libpq++ improvements
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New options to initdb(Bryan)
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Pg_dump allow dump of oid's(Bruce)
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Pg_dump create indexes after tables are loaded for speed(Bruce)
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Pg_dumpall dumps all databases, and the user table
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Pginterface additions for NULL values(Bruce)
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Prevent postmaster from being run as root
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Psql \h and \? is now readable(Bruce)
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Psql allow backslashed, semicolons anywhere on the line(Bruce)
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Psql changed command prompt for lines in query or in quotes(Bruce)
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Psql char(3) now displays as (bp)char in \d output(Bruce)
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Psql return code now more accurate(Bryan?)
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Psql updated help syntax(Bruce)
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Re-visit and fix vacuum(Vadim)
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Reduce size of regression diffs, remove timezone name difference(Bruce)
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Remove compile-time parameters to enable binary distributions(Bryan)
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Reverse meaning of HBA masks(Bryan)
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Secure Authentication of local users(Bryan)
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Speed up vacuum(Vadim)
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Vacuum now had VERBOSE option(Bruce)
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Source tree changes
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-------------------
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All functions now have prototypes that are compared against the calls
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Allow asserts to be disabled easly from Makefile.global(Bruce)
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Change oid constants used in code to #define names
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Decoupled sparc and solaris defines(Kurt)
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Gcc -Wall compiles cleanly with warnings only from unfixable constructs
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Major include file reorganization/reduction(Marc)
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Make now stops on compile failure(Bryan)
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Makefile restructuring(Bryan, Marc)
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Merge bsdi_2_1 to bsdi(Bruce)
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Monitor program removed
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Name change from Postgres95 to PostgreSQL
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New config.h file(Marc, Bryan)
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PG_VERSION now set to 6.0 and used by postmaster
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Portability additions, including Ultrix, DG/UX, AIX, and Solaris
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Reduced the number of #define's, centeralized #define's
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Remove duplicate OIDS in system tables(Dan)
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Remove duplicate system catalog info or report mismatches(Dan)
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Removed many os-specific #define's
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Restructured object file generation/location(Bryan, Marc)
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Restructured port-specific file locations(Bryan, Marc)
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Unused/uninialized variables corrected
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PostgreSQL 1.09 ???
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-------------------------------------------------------------
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Sorry, we stopped keeping track of changes from 1.02 to 1.09. Some of
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the changes listed in 6.0 were actually included in the 1.02.1 to 1.09
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releases.
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Postgres95 1.02 Thu Aug 1 18:00:00 EDT 1996
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-------------------------------------------------------------
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Source code maintainenance and development
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* worldwide team of volunteers
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* the source tree now in CVS at ftp.ki.net
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* developers mailing list - pg95-dev@ki.net
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Enhancements
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* psql (and underlying libpq library) now has many more options for
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formatting output, including HTML
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* pg_dump now output the schema and/or the data, with many fixes to
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enhance completeness.
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* psql used in place of monitor in administration shell scripts.
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monitor to be depreciated in next release.
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* date/time functions enhanced
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* NULL insert/update/comparison fixed/enhanced
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* TCL/TK lib and shell fixed to work with both tck7.4/tk4.0 and tcl7.5/tk4.1
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Bug Fixes (almost too numerous to mention)
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* indexes
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* storage management
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* check for NULL pointer before dereferencing
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* Makefile fixes
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New Ports
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* added SolarisX86 port
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* added BSDI 2.1 port
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* added DGUX port
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Contributors (appologies to any missed)
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* Kurt J. Lidl <lidl@va.pubnix.com>
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(missed in first run, but no less important)
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* Erich Stamberger <eberger@gewi.kfunigraz.ac.at>
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* Jason Wright <jason@shiloh.vnet.net>
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* Cees de Groot <C.deGroot@inter.NL.net>
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* ernst.molitor@uni-bonn.de
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* michael.siebenborn@ae3.Hypo.DE (Michael Siebenborn (6929))
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* Brian E. Gallew <geek+@cmu.edu>
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* Vadim B. Mikheev <vadim@sable.krasnoyarsk.su>
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* Adam Sussman <myddryn@vidya.com>
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* Chris Dunlop <chris@onthe.net.au>
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* Marc G. Fournier <scrappy@ki.net>
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* Dan McGuirk <mcguirk@indirect.com>
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* Dr_George_D_Detlefsen <drgeorge@ilt.com>
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* Erich Stamberger <eberger@gewi.kfunigraz.ac.at>
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* Massimo Dal Zotto <dz@cs.unitn.it>
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* Randy Kunkee <kunkee@Starbase.NeoSoft.COM>
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* Rick Weldon <rick@wisetech.com>
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* Thomas van Reimersdahl <reimersd@dali.techinfo.rwth-aachen.de>
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* david bennett <dave@bensoft.com>
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* ernst.molitor@uni-bonn.de
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* Julian Assange <proff@suburbia.net>
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* Bruce Momjian <maillist@candle.pha.pa.us>
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* Paul "Shag" Walmsley <ccshag@cclabs.missouri.edu>
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* "Alistair G. Crooks" <azcb0@sde.uts.amdahl.com>
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Postgres95 1.01 Fri Feb 23 18:20:36 PST 1996
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-------------------------------------------------------------
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Incompatibilities:
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* 1.01 is backwards compatible with 1.0 database provided the user
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follow the steps outlined in the MIGRATION_from_1.0_to_1.01 file.
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If those steps are not taken, 1.01 is not compatible with 1.0 database.
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Enhancements:
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* added PQdisplayTuples() to libpq and changed monitor and psql to use it
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* added NeXT port (requires SysVIPC implementation)
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* added CAST .. AS ... syntax
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* added ASC and DESC keywords
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* added 'internal' as a possible language for CREATE FUNCTION
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internal functions are C functions which have been statically linked
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into the postgres backend.
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* a new type "name" has been added for system identifiers (table names,
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attribute names, etc.) This replaces the old char16 type. The
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of name is set by the NAMEDATALEN #define in src/Makefile.global
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* a readable reference manual that describes the query language.
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* added host-based access control. A configuration file ($PGDATA/pg_hba)
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is used to hold the configuration data. If host-based access control
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is not desired, comment out HBA=1 in src/Makefile.global.
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* changed regex handling to be uniform use of Henry Spencer's regex code
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regardless of platform. The regex code is included in the distribution
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* added functions and operators for case-insensitive regular expressions.
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The operators are ~* and !~*.
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* pg_dump uses COPY instead of SELECT loop for better performance
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Bug fixes:
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* fixed an optimizer bug that was causing core dumps when
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functions calls were used in comparisons in the WHERE clause
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* changed all uses of getuid to geteuid so that effective uids are used
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* psql now returns non-zero status on errors when using -c
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* applied public patches 1-14
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Postgres95 1.0 Tue Sep 5 11:24:11 PDT 1995
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-------------------------------------------------------------
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Copyright change:
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* The copyright of Postgres 1.0 has been loosened to be freely modifiable
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and modifiable for any purpose. Please read the COPYRIGHT file.
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Thanks to Professor Michael Stonebraker for making this possible.
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Incompatibilities:
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* date formats have to be MM-DD-YYYY (or DD-MM-YYYY if you're using
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EUROPEAN STYLE). This follows SQL-92 specs.
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* "delimiters" is now a keyword
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Enhancements:
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* sql LIKE syntax has been added
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* copy command now takes an optional USING DELIMITER specification.
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delimiters can be any single-character string.
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* IRIX 5.3 port has been added.
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Thanks to Paul Walmsley (ccshag@everest.cclabs.missouri.edu) and others.
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* updated pg_dump to work with new libpq
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* \d has been added psql
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Thanks to Keith Parks (emkxp01@mtcc.demon.co.uk)
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* regexp performance for architectures that use POSIX regex has been
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improved due to caching of precompiled patterns.
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Thanks to Alistair Crooks (agc@uts.amdahl.com)
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* a new version of libpq++
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Thanks to William Wanders (wwanders@sci.kun.nl)
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Bug fixes:
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* arbitrary userids can be specified in the createuser script
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* \c to connect to other databases in psql now works.
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* bad pg_proc entry for float4inc() is fixed
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* users with usecreatedb field set can now create databases without
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having to be usesuper
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* remove access control entries when the entry no longer has any
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permissions
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* fixed non-portable datetimes implementation
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* added kerberos flags to the src/backend/Makefile
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* libpq now works with kerberos
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* typographic errors in the user manual have been corrected.
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* btrees with multiple index never worked, now we tell you they don't
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work when you try to use them
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Postgres95 Beta 0.03 Fri Jul 21 14:49:31 PDT 1995
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------------------------------------------------------
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Incompatible changes:
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* BETA-0.3 IS INCOMPATIBLE WITH DATABASES CREATED WITH PREVIOUS VERSIONS
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(due to system catalog changes and indexing structure changes).
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* double-quote (") is deprecated as a quoting character for string literals;
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you need to convert them to single quotes (').
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* name of aggregates (eg. int4sum) are renamed in accordance with the
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SQL standard (eg. sum).
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* CHANGE ACL syntax is replaced by GRANT/REVOKE syntax.
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* float literals (eg. 3.14) are now of type float4 (instead of float8 in
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previous releases); you might have to do typecasting if you depend on it
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being of type float8. If you neglect to do the typecasting and you assign
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a float literal to a field of type float8, you may get incorrect values
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stored!
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* LIBPQ has been totally revamped so that frontend applications
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can connect to multiple backends
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* the usesysid field in pg_user has been changed from int2 to int4 to
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allow wider range of Unix user ids.
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* the netbsd/freebsd/bsd o/s ports have been consolidated into a
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single BSD44_derived port. (thanks to Alistair Crooks)
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SQL standard-compliance (the following details changes that makes postgres95
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more compliant to the SQL-92 standard):
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* the following SQL types are now built-in: smallint, int(eger), float, real,
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char(N), varchar(N), date and time.
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The following are aliases to existing postgres types:
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smallint -> int2
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integer, int -> int4
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float, real -> float4
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char(N) and varchar(N) are implemented as truncated text types. In
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addition, char(N) does blank-padding.
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* single-quote (') is used for quoting string literals; '' (in addition to
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\') is supported as means of inserting a single quote in a string
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* SQL standard aggregate names (MAX, MIN, AVG, SUM, COUNT) are used
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(Also, aggregates can now be overloaded, i.e. you can define your
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own MAX aggregate to take in a user-defined type.)
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* CHANGE ACL removed. GRANT/REVOKE syntax added.
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- Privileges can be given to a group using the "GROUP" keyword.
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For example:
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GRANT SELECT ON foobar TO GROUP my_group;
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The keyword 'PUBLIC' is also supported to mean all users.
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Privileges can only be granted or revoked to one user or group
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at a time.
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"WITH GRANT OPTION" is not supported. Only class owners can change
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access control
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- The default access control is to to grant users readonly access.
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You must explicitly grant insert/update access to users. To change
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this, modify the line in
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src/backend/utils/acl.h
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that defines ACL_WORLD_DEFAULT
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Bug fixes:
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* the bug where aggregates of empty tables were not run has been fixed. Now,
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aggregates run on empty tables will return the initial conditions of the
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aggregates. Thus, COUNT of an empty table will now properly return 0.
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MAX/MIN of an empty table will return a tuple of value NULL.
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* allow the use of \; inside the monitor
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* the LISTEN/NOTIFY asynchronous notification mechanism now work
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* NOTIFY in rule action bodies now work
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* hash indices work, and access methods in general should perform better.
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creation of large btree indices should be much faster. (thanks to Paul
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Aoki)
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Other changes and enhancements:
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* addition of an EXPLAIN statement used for explaining the query execution
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plan (eg. "EXPLAIN SELECT * FROM EMP" prints out the execution plan for
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the query).
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* WARN and NOTICE messages no longer have timestamps on them. To turn on
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timestamps of error messages, uncomment the line in
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src/backend/utils/elog.h:
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/* define ELOG_TIMESTAMPS */
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* On an access control violation, the message
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"Either no such class or insufficient privilege"
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will be given. This is the same message that is returned when
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a class is not found. This dissuades non-privileged users from
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guessing the existence of privileged classes.
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* some additional system catalog changes have been made that are not
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visible to the user.
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libpgtcl changes:
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* The -oid option has been added to the "pg_result" tcl command.
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pg_result -oid returns oid of the last tuple inserted. If the
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last command was not an INSERT, then pg_result -oid returns "".
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* the large object interface is available as pg_lo* tcl commands:
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pg_lo_open, pg_lo_close, pg_lo_creat, etc.
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Portability enhancements and New Ports:
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* flex/lex problems have been cleared up. Now, you should be able to use
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flex instead of lex on any platforms. We no longer make assumptions of
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what lexer you use based on the platform you use.
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* The Linux-ELF port is now supported. Various configuration have been
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tested: The following configuration is known to work:
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kernel 1.2.10, gcc 2.6.3, libc 4.7.2, flex 2.5.2, bison 1.24
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with everything in ELF format,
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New utilities:
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* ipcclean added to the distribution
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ipcclean usually does not need to be run, but if your backend crashes
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and leaves shared memory segments hanging around, ipcclean will
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clean them up for you.
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New documentation:
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* the user manual has been revised and libpq documentation added.
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Postgres95 Beta 0.02 (Thu May 25 16:54:46 PDT 1995)
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------------------------------------------------------
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Incompatible changes:
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* The SQL statement for creating a database is 'CREATE DATABASE' instead
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of 'CREATEDB'. Similarly, dropping a database is 'DROP DATABASE' instead
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of 'DESTROYDB'. However, the names of the executables 'createdb' and
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'destroydb' remain the same.
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New tools:
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* pgperl - a Perl (4.036) interface to Postgres95
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* pg_dump - a utility for dumping out a postgres database into a
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script file containing query commands. The script files are in a ASCII
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format and can be used to reconstruct the database, even on other
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machines and other architectures. (Also good for converting
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a Postgres 4.2 database to Postgres95 database.)
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The following ports have been incorporated into postgres95-beta-0.02:
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* the NetBSD port by Alistair Crooks
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* the AIX port by Mike Tung
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* the Windows NT port by Jon Forrest (more stuff but not done yet)
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* the Linux ELF port by Brian Gallew
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The following bugs have been fixed in postgres95-beta-0.02:
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* new lines not escaped in COPY OUT and problem with COPY OUT when first
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attribute is a '.'
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* cannot type return to use the default user id in createuser
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* SELECT DISTINCT on big tables crashes
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* Linux installation problems
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* monitor doesn't allow use of 'localhost' as PGHOST
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* psql core dumps when doing \c or \l
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* the "pgtclsh" target missing from src/bin/pgtclsh/Makefile
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* libpgtcl has a hard-wired default port number
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* SELECT DISTINCT INTO TABLE hangs
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* CREATE TYPE doesn't accept 'variable' as the internallength
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* wrong result using more than 1 aggregate in a SELECT
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Postgres95 Beta 0.01 (Mon May 1 19:03:10 PDT 1995)
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------------------------------------------------------
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Initial release.
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