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@ -1,8 +1,8 @@ |
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TODO list for PostgreSQL |
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======================== |
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Last updated: Fri Feb 27 13:32:53 EST 1998 |
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Last updated: Sat Feb 28 10:00:29 EST 1998 |
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Current maintainer: Bruce Momjian (maillist@candle.pha.pa.us) |
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Current maintainer: Bruce Momjian (maillist@candle.pha.pa.us) |
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The most recent version of this document can be viewed at |
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the PostgreSQL WWW site, http://www.postgreSQL.org. |
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@ -13,50 +13,50 @@ A dash(-) marks changes to be in the next release. |
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Developers who have claimed items are: |
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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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* D'Arcy is D'Arcy J.M. Cain <darcy@druid.net> |
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* Dan is Dan McGuirk <mcguirk@indirect.com> |
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* Daniel is Daniel Kalchev <daniel@digsys.bg> |
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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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* Gerhard is Gerhard Reithofer <gerhardr@tech-edv.co.at> |
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* Goran is Goran Thyni <goran@bildbasen.se> |
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* Henry is Henry B. Hotz <hotz@jpl.nasa.gov> |
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* Igor is Igor <igor@sba.miami.edu> |
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* Jan is Jan Wieck <wieck@sapserv.debis.de> |
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* Jun is Jun Kuwamura <juk@rccm.co.jp> |
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* Kurt is "Kurt J. Lidl" <lidl@va.pubnix.com> |
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* Marc is Marc Fournier <scrappy@hub.org> |
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* Martin is Martin S. Utesch <utesch@aut.tu-freiberg.de> |
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* Michael is Michael Meskes <meskes@topsystem.de> |
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* Oleg is Oleg Bartunov <oleg@sai.msu.su> |
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* Paul is Paul M. Aoki <aoki@CS.Berkeley.EDU> |
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* Patrick is Patrick van Kleef <pvk@pobox.com> |
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* Peter is Peter T Mount <psqlhack@maidast.demon.co.uk> |
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* Phil is Phil Thompson <phil@river-bank.demon.co.uk> |
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* Raymond is Raymond Toy <toy@rtp.ericsson.se> |
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* Soo-Ho Ok <shok@detc.dongeui-tc.ac.kr> |
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* Stefan Simkovics <ssimkovi@rainbow.studorg.tuwien.ac.at> |
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* Sven is Sven Verdoolaege <skimo@breughel.ufsia.ac.be> |
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* Tatsuo is Tatsuo Ishii <t-ishii@sra.co.jp> |
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* Thomas is Thomas Lockhart <tgl@mythos.jpl.nasa.gov> |
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* Todd is Todd Brandys is <brandys@eng3.hep.uiuc.edu> |
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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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* 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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* D'Arcy is D'Arcy J.M. Cain <darcy@druid.net> |
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* Dan is Dan McGuirk <mcguirk@indirect.com> |
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* Daniel is Daniel Kalchev <daniel@digsys.bg> |
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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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* Gerhard is Gerhard Reithofer <gerhardr@tech-edv.co.at> |
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* Goran is Goran Thyni <goran@bildbasen.se> |
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* Henry is Henry B. Hotz <hotz@jpl.nasa.gov> |
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* Igor is Igor <igor@sba.miami.edu> |
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* Jan is Jan Wieck <wieck@sapserv.debis.de> |
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* Jun is Jun Kuwamura <juk@rccm.co.jp> |
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* Kurt is "Kurt J. Lidl" <lidl@va.pubnix.com> |
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* Marc is Marc Fournier <scrappy@hub.org> |
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* Martin is Martin S. Utesch <utesch@aut.tu-freiberg.de> |
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* Michael is Michael Meskes <meskes@topsystem.de> |
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* Oleg is Oleg Bartunov <oleg@sai.msu.su> |
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* Paul is Paul M. Aoki <aoki@CS.Berkeley.EDU> |
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* Patrick is Patrick van Kleef <pvk@pobox.com> |
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* Peter is Peter T Mount <psqlhack@maidast.demon.co.uk> |
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* Phil is Phil Thompson <phil@river-bank.demon.co.uk> |
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* Raymond is Raymond Toy <toy@rtp.ericsson.se> |
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* Soo-Ho Ok <shok@detc.dongeui-tc.ac.kr> |
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* Stefan Simkovics <ssimkovi@rainbow.studorg.tuwien.ac.at> |
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* Sven is Sven Verdoolaege <skimo@breughel.ufsia.ac.be> |
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* Tatsuo is Tatsuo Ishii <t-ishii@sra.co.jp> |
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* Thomas is Thomas Lockhart <tgl@mythos.jpl.nasa.gov> |
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* Todd is Todd Brandys is <brandys@eng3.hep.uiuc.edu> |
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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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Additional 6.3 developers include: |
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--------------------------------- |
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* Billy is Billy G. Allie <Bill.Allie@mug.org> |
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* Brook is Brook Milligan <brook@trillium.NMSU.Edu> |
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* James is James Hughes <jamesh@interpath.com> |
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* Jeroen is Jeroen van Vianen <jeroenv@design.nl> |
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* Matt is Matt Maycock <maycock@intelliquest.com> |
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* Ryan is Ryan Kirkpatrick <rkirkpat@nag.cs.colorado.edu> |
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* TomH is Tom I Helbekkmo <tih@Hamartun.Priv.NO> |
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* TomS is Tom Szybist |
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* Travis is Travis Melhiser <melhiser@viper.co.union.nc.us> |
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* Billy is Billy G. Allie <Bill.Allie@mug.org> |
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* Brook is Brook Milligan <brook@trillium.NMSU.Edu> |
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* James is James Hughes <jamesh@interpath.com> |
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* Jeroen is Jeroen van Vianen <jeroenv@design.nl> |
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* Matt is Matt Maycock <maycock@intelliquest.com> |
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* Ryan is Ryan Kirkpatrick <rkirkpat@nag.cs.colorado.edu> |
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* TomH is Tom I Helbekkmo <tih@Hamartun.Priv.NO> |
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* TomS is Tom Szybist |
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* Travis is Travis Melhiser <melhiser@viper.co.union.nc.us> |
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RELIABILITY |
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----------- |
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@ -64,8 +64,7 @@ RELIABILITY |
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* Overhaul bufmgr/lockmgr/transaction manager |
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* -Fix CLUSTER |
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* Remove EXTEND? |
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* -Aggregates on VIEW always returns zero (maybe because there is no oid for vi |
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ews?) |
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* -Aggregates on VIEW always returns zero (maybe because there is no oid for views?) |
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* CREATE VIEW requires super-user priviledge |
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* Can lo_export()/lo_import() read/write anywhere, causing a security problem? |
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* Tables that start with xinv confused to be large objects |
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@ -96,31 +95,31 @@ ENHANCEMENTS |
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* Allow transaction commits with rollback with no-fsync performance |
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* More access control over who can create tables and access the database |
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* Add full ANSI SQL capabilities |
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* -add subselects(Vadim) |
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* Implement HAVING clause |
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* -Implement EXISTS qualifier |
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* -report "Not implemented" if valid syntax is supplied |
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* add OUTER joins, left and right (Thomas) |
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* make VIEWs updateable where possible |
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* -add UNIONS(Bruce) |
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* add INTERSECTS, SUBTRACTS |
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* add temporary tables(Bruce) |
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* add sql3 recursive unions |
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* add the concept of dataspaces |
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* add DECIMAL, NUMERIC, DOUBLE PRECISION, BIT, BIT VARYING |
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* NCHAR (as distinguished from ordinary varchar), |
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* -add subselects(Vadim) |
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* Implement HAVING clause |
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* -Implement EXISTS qualifier |
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* -report "Not implemented" if valid syntax is supplied |
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* add OUTER joins, left and right (Thomas) |
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* make VIEWs updateable where possible |
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* -add UNIONS(Bruce) |
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* add INTERSECTS, SUBTRACTS |
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* add temporary tables(Bruce) |
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* add sql3 recursive unions |
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* add the concept of dataspaces |
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* add DECIMAL, NUMERIC, DOUBLE PRECISION, BIT, BIT VARYING |
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* NCHAR (as distinguished from ordinary varchar), |
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* Allow compression of large fields or a compressed field type |
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* Fix the rules system(Jan?,Soo-Ho) |
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* robust |
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* making INSTEAD rules work |
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* add CONSTRAINT |
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* robust |
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* making INSTEAD rules work |
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* add CONSTRAINT |
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* Full set of text operations and functions |
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* word searches, concat,max() on text, char |
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* word searches, concat,max() on text, char |
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* Large objects |
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* -overwriting blocks has problems(Peter) |
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* -there are other problems, too.(Peter) |
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* Fix large object mapping scheme, own reltype |
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* not to stuff everything as files in a single directory |
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* -overwriting blocks has problems(Peter) |
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* -there are other problems, too.(Peter) |
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* Fix large object mapping scheme, own reltype |
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* not to stuff everything as files in a single directory |
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* Better interface for adding to pg_group |
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* Make MONEY/DECIMAL have a defined precision |
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* Add support for tables >2G, or test current version |
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@ -128,9 +127,9 @@ ENHANCEMENTS |
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* Allow libpq to cancel query requests |
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* Add REGEX internationalization |
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* -Add other language types for built-in functions |
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* expand to allow tcl, perl, java |
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* generalize the function manager switch to pass |
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* function sources to interpreter engines. |
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* expand to allow tcl, perl, java |
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* generalize the function manager switch to pass |
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* function sources to interpreter engines. |
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* -remove time-travel feature(Vadim) |
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* -reduce system column overhead(Vadmin) |
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* -remove pg_time table(Vadim) |
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@ -148,8 +147,7 @@ ENHANCEMENTS |
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* add UNIQUE capability to non-btree indexes |
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* make number of backends a config parameter, storage/sinvaladt.h:MaxBackendId |
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* certain indexes will not shrink, i.e. oid indexes with many inserts |
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* make NULL's come out at the beginning or end depending on the ORDER BY direct |
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ion |
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* make NULL's come out at the beginning or end depending on the ORDER BY direction |
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* change the library/backend interface to use network byte order |
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* -allow unix domain sockets for local connections for performance and security |
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* -Add PAGER for psql's \dt, \d, \z tablename |
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@ -182,8 +180,7 @@ ion |
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PERFORMANCE |
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----------- |
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* Use indexes in ORDER BY, min(), max()(Costin Oproiu) |
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* -Allow LIKE/wildcard matches to use indexes if the wildcard character is not |
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first |
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* -Allow LIKE/wildcard matches to use indexes if the wildcard character is not first |
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* Optimizing disjunctive queries |
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* Fix bushy-plans (Martin) |
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* Other optimizer bugs |
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@ -212,6 +209,59 @@ DOCUMENTATION |
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CHANGES IN THE 6.3 RELEASE |
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-------------------------- |
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There are some general 6.3 issues that I want to mention. These are |
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only the big items that can not be described in one sentence. |
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First, we now have subselects. Now that we have them, I would like to |
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mention that without subselects, SQL is a very limited language. |
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Subselects are a major feature, and you should review your code for |
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places where subselects provide a better solution for your queries. I |
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think you will find that there are more uses for subselects than you may |
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think. Vadim has put us on the big SQL map with subselects, and fully |
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functional ones too. The only thing you can't do with subselects is to |
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use them in the target list. |
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Second, 6.3 uses unix domain sockets rather than TCP/IP by default. To |
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enable connections from other machines, you have to use the new |
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postmaster -i option, and of course edit pg_hba.conf. Also, for this |
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reason, the format of pg_hba.conf has changed. |
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Third, char() fields will now allow faster access than varchar() or |
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text. Specifically, the text and varchar() have a penalty for access to |
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any columns after the first column of this type. char() used to also |
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have this access penalty, but it no longer does. This may suggest that |
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you redesign some of your tables, especially if you have short character |
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columns that you have defined as varchar() or text. This and other |
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changes make 6.3 even faster than earlier releases. |
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We now have passwords definable independent of any Unix file. There are |
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new SQL USER commands. See the pg_hba.conf manual page for more |
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information. There is a new table, pg_shadow, which is used to store |
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user information and user passwords, and it by default only SELECT-able |
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by the postgres super-user. pg_user is now a view of pg_shadow, and is |
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SELECT-able by PUBLIC. You should keep using pg_user in your |
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application without changes. |
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User-created tables now no longer have SELECT permission to PUBLIC by |
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default. This was done because the ANSI standard requires it. You can |
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of course GRANT any permissions you want after the table is created. |
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System tables continue to be SELECT-able by PUBLIC. |
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We also have real deadlock detection code. No more sixty-second |
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timeouts. And the new locking code implements a FIFO better, so there |
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should be less resource starvation during heavy use. For performance |
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reasons, time travel is gone, but can be implemented using triggers (see |
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pgsql/contrib/spi/README). Please check out the new \d command for |
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types, operators, etc. Also, views have their own permissions now, not |
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based on the underlying tables, so permissions on them have to be set |
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separately. Check /pgsql/interfaces for some new ways to talk to |
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PostgreSQL. |
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This is the first release that really required an explaination for |
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existing users. In many ways, this was necessary because the new |
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release removes many limitations, and the work-arounds people were using |
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are no longer needed. |
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Bug Fixes |
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--------- |
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Fix binary cursors broken by MOVE implementation(Vadim) |
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@ -231,20 +281,22 @@ Fix for count(*), aggs with views and multiple tables and sum(3)(Bruce) |
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Fix cluster(Bruce) |
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Fix for PQtrace start/stop several times(Bruce) |
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Fix a variety of locking problems like newer lock waiters getting |
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lock before older waiters, and having readlock people not share |
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locks if a writer is waiting for a lock, and waiting writers not |
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getting priority over waiting readers(Bruce) |
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lock before older waiters, and having readlock people not share |
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locks if a writer is waiting for a lock, and waiting writers not |
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getting priority over waiting readers(Bruce) |
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Fix crashes in psql when executing queries from external files(James) |
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Fix problem with multiple order by columns, with the first one having |
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NULL values(Jeroen) |
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NULL values(Jeroen) |
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Use correct hash table support functions for float8 and int4(Thomas) |
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Re-enable JOIN= option in CREATE OPERATOR statement (Thomas) |
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Change precedence for boolean operators to match expected behavior(Thomas) |
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Generate elog(ERROR) on over-large integer(Bruce) |
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Allow multiple-argument functions in constraint clauses(Thomas) |
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Check boolean input literals for 'true','false','yes','no','1','0' |
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and throw elog(ERROR) if unrecognized(Thomas) |
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and throw elog(ERROR) if unrecognized(Thomas) |
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Major large objects fix |
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Fix for GROUP BY showing duplicates(Vadim) |
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Fix for index scans in MergeJion(Vadim) |
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Enhancements |
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------------ |
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@ -252,26 +304,24 @@ Subselects with EXISTS, IN, ALL, ANY keywords (Vadim, Bruce, Thomas) |
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New User Manual(Thomas, others) |
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Speedup by inlining some frequently-called functions |
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Real deadlock detection, no more timeouts(Bruce) |
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Add SQL92 "constants" CURRENT_DATE, CURRENT_TIME, CURRENT_TIMESTAMP, |
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CURRENT_USER(Thomas) |
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Add SQL92 "constants" CURRENT_DATE, CURRENT_TIME, CURRENT_TIMESTAMP, |
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CURRENT_USER(Thomas) |
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Modify constraint syntax to be SQL92-compliant(Thomas) |
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Implement SQL92 PRIMARY KEY and UNIQUE clauses using indices(Thomas) |
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Recognize SQL92 syntax for FOREIGN KEY. Throw elog notice(Thomas) |
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Allow NOT NULL UNIQUE constraint clause (each allowed separately before)(Thomas |
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) |
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Allow NOT NULL UNIQUE constraint clause (each allowed separately before)(Thomas) |
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Allow Postgres-style casting ("::") of non-constants(Thomas) |
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Add support for SQL3 TRUE and FALSE boolean constants(Thomas) |
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Support SQL92 syntax for IS TRUE/IS FALSE/IS NOT TRUE/IS NOT FALSE(Thomas) |
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Allow shorter strings for boolean literals (e.g. "t", "tr", "tru")(Thomas) |
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Allow SQL92 delimited identifiers(Thomas) |
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Implement SQL92 binary and hexadecimal string decoding (b'10' and x'1F')(Thomas |
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) |
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Implement SQL92 binary and hexadecimal string decoding (b'10' and x'1F')(Thomas) |
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Support SQL92 syntax for type coercion of literal strings |
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(e.g. "DATETIME 'now'")(Thomas) |
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(e.g. "DATETIME 'now'")(Thomas) |
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Add conversions for int2, int4, and OID types to and from text(Thomas) |
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Use shared lock when building indices(Vadim) |
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Free memory allocated for an user query inside transaction block after |
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this query is done, was turned off in <= 6.2.1(Vadim) |
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this query is done, was turned off in <= 6.2.1(Vadim) |
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New SQL statement CREATE PROCEDURAL LANGUAGE(Jan) |
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New PostgreSQL Procedural Language (PL) backend interface(Jan) |
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Rename pg_dump -H option to -h(Bruce) |
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@ -287,13 +337,12 @@ Augment support for SQL92 SET TIME ZONE...(Thomas) |
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SET/SHOW/RESET TIME ZONE uses TZ backend environment variable(Thomas) |
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Implement SET keyword = DEFAULT and SET TIME ZONE DEFAULT(Thomas) |
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Enable SET TIME ZONE using TZ environment variable(Thomas) |
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Add PGDATESTYLE environment variable to frontend and backend initialization(Tho |
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mas) |
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Add PGDATESTYLE environment variable to frontend and backend initialization(Thomas) |
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Add PGTZ, PGCOSTHEAP, PGCOSTINDEX, PGRPLANS, PGGEQO |
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frontend library initialization environment variables(Thomas) |
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frontend library initialization environment variables(Thomas) |
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Regression tests time zone automatically set with "setenv PGTZ PST8PDT"(Thomas) |
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Add pg_description table for info on tables, columns, operators, types, and |
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aggregates(Bruce) |
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aggregates(Bruce) |
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Increase 16 char limit on system table/index names to 32 characters(Bruce) |
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Rename system indices(Bruce) |
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Add 'GERMAN' option to SET DATESTYLE(Thomas) |
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@ -304,7 +353,7 @@ Implement day of year as possible input to date_part()(Thomas) |
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Define timespan_finite() and text_timespan() functions(Thomas) |
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Remove archive stuff(Bruce) |
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Allow for a pg_password authentication database that is separate from |
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the system password file(Todd) |
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the system password file(Todd) |
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Dump ACLs, GRANT, REVOKE permissions(Matt) |
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Define text, varchar, and bpchar string length functions(Thomas) |
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Fix Query handling for inheritance, and cost computations(Bruce) |
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@ -336,10 +385,10 @@ Reduce system column overhead(Vadmin) |
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Remove pg_time table(Vadim) |
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Add pg_type attribute to identify types that need length (bpchar, varchar) |
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Add report of offending line when COPY command fails |
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Allow VIEW permissions to be set separately from the underlying tables. |
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For security, use GRANT/REVOKE on views as appropriate(Jan) |
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Allow VIEW permissions to be set separately from the underlying tables. |
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For security, use GRANT/REVOKE on views as appropriate(Jan) |
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Tables now have no default GRANT SELECT TO PUBLIC. You must |
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explicitly grant such permissions. |
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explicitly grant such permissions. |
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Source Tree Changes |
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------------------- |
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@ -351,7 +400,7 @@ Make configure more automated(Brook) |
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Add script to check regression test results |
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Break parser functions into smaller files, group together(Bruce) |
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Rename heap_create to heap_create_and_catalog, rename heap_creatr |
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to heap_create()(Bruce) |
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to heap_create()(Bruce) |
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Sparc/Linux patch for locking(TomS) |
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Remove PORTNAME and reorganize port-specific stuff(Marc) |
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Add optimizer README file(Bruce) |
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@ -360,7 +409,7 @@ Fix for NetBSD locking(Henry) |
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Fix for libptcl make(Tatsuo) |
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AIX patch(Darren) |
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Change IS TRUE, IS FALSE, ... to expressions using "=" rather than |
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function calls to istrue() or isfalse() to allow optimization(Thomas) |
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function calls to istrue() or isfalse() to allow optimization(Thomas) |
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Various fixes NetBSD/Sparc related(TomH) |
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Alpha linux locking(Travis,Ryan) |
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Change elog(WARN) to elog(ERROR)(Bruce) |
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@ -377,4 +426,3 @@ Start a Cygnus port |
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Add string functions to regression suite(Thomas) |
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Expand a few function names formerly truncated to 16 characters(Thomas) |
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Remove un-needed malloc() calls and replace with palloc()(Bruce) |
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Bruce Momjian
28 years ago