From:
Martijn van Oosterhout <kleptog(at)svana(dot)org>
To:
Andrew Dunstan <andrew(at)dunslane(dot)net>
Cc:
Gregory Stark <stark(at)enterprisedb(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject:
Re: column ordering, was Re: [PATCHES] Enums patch v2
Date:
2006-12-19 16:25:04
Message-ID:
20061219162504.GC21385@svana.org (view raw or flat )
Thread:
2006-12-19 02:34:36 from Tom Dunstan <pgsql(at)tomd(dot)cc>
2006-12-19 08:09:47 from Heikki Linnakangas <heikki(at)enterprisedb(dot)com>
2006-12-19 08:23:23 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2006-12-19 14:34:27 from Andrew Dunstan <andrew(at)dunslane(dot)net>
2006-12-19 14:58:48 from Alvaro Herrera <alvherre(at)commandprompt(dot)com>
2006-12-19 15:11:42 from Andrew Dunstan <andrew(at)dunslane(dot)net>
2006-12-19 15:22:13 from Gregory Stark <stark(at)enterprisedb(dot)com>
2006-12-19 15:48:41 from Andrew Dunstan <andrew(at)dunslane(dot)net>
2006-12-19 16:25:04 from Martijn van Oosterhout <kleptog(at)svana(dot)org>
2006-12-20 03:35:21 from Robert Treat <xzilla(at)users(dot)sourceforge(dot)net>
2006-12-20 03:44:53 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2006-12-20 04:12:50 from Stephen Frost <sfrost(at)snowman(dot)net>
2006-12-20 04:29:24 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2006-12-20 11:33:53 from Russell Smith <mr-russ(at)pws(dot)com(dot)au>
2006-12-20 14:19:12 from Andrew Dunstan <andrew(at)dunslane(dot)net>
2006-12-20 14:27:13 from Stephen Frost <sfrost(at)snowman(dot)net>
2006-12-20 16:20:16 from Bruce Momjian <bruce(at)momjian(dot)us>
2006-12-20 16:24:02 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2006-12-20 21:23:49 from Russell Smith <mr-russ(at)pws(dot)com(dot)au>
2006-12-21 16:26:30 from "Kevin Grittner" <Kevin(dot)Grittner(at)wicourts(dot)gov>
2006-12-20 12:06:54 from Martijn van Oosterhout <kleptog(at)svana(dot)org>
2006-12-20 14:15:05 from Stephen Frost <sfrost(at)snowman(dot)net>
2006-12-20 20:17:12 from Martijn van Oosterhout <kleptog(at)svana(dot)org>
2006-12-21 14:39:07 from "Zeugswetter Andreas ADI SD" <ZeugswetterA(at)spardat(dot)at>
2006-12-21 15:27:12 from Andrew Dunstan <andrew(at)dunslane(dot)net>
2006-12-21 15:37:03 from Martijn van Oosterhout <kleptog(at)svana(dot)org>
2006-12-21 15:50:59 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2006-12-21 16:07:20 from Martijn van Oosterhout <kleptog(at)svana(dot)org>
2006-12-21 16:15:38 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2006-12-21 16:27:44 from Andrew Dunstan <andrew(at)dunslane(dot)net>
2006-12-21 16:43:27 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2006-12-21 17:09:46 from Andrew Dunstan <andrew(at)dunslane(dot)net>
2006-12-22 01:48:49 from Gregory Stark <gsstark(at)mit(dot)edu>
2006-12-22 02:28:58 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2006-12-22 09:25:08 from "Zeugswetter Andreas ADI SD" <ZeugswetterA(at)spardat(dot)at>
2006-12-30 04:46:27 from "Jim C(dot) Nasby" <jim(at)nasby(dot)net>
2007-02-02 05:43:04 from Bruce Momjian <bruce(at)momjian(dot)us>
2006-12-21 16:47:56 from Martijn van Oosterhout <kleptog(at)svana(dot)org>
2006-12-21 16:59:47 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2006-12-21 16:06:53 from "Zeugswetter Andreas ADI SD" <ZeugswetterA(at)spardat(dot)at>
2006-12-21 16:11:46 from Martijn van Oosterhout <kleptog(at)svana(dot)org>
2006-12-21 16:18:02 from "Zeugswetter Andreas ADI SD" <ZeugswetterA(at)spardat(dot)at>
2006-12-20 12:26:59 from Peter Eisentraut <peter_e(at)gmx(dot)net>
2006-12-20 13:20:14 from Kenneth Marshall <ktm(at)it(dot)is(dot)rice(dot)edu>
2006-12-20 13:38:30 from Martijn van Oosterhout <kleptog(at)svana(dot)org>
2006-12-20 14:11:48 from Andrew Dunstan <andrew(at)dunslane(dot)net>
2006-12-20 14:36:32 from Richard Huxton <dev(at)archonet(dot)com>
2006-12-20 13:59:21 from Peter Eisentraut <peter_e(at)gmx(dot)net>
2006-12-19 15:19:34 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2006-12-20 01:39:58 from Tom Dunstan <pgsql(at)tomd(dot)cc>
2006-12-20 11:03:11 from Martijn van Oosterhout <kleptog(at)svana(dot)org>
2006-12-20 14:49:32 from Andrew Dunstan <andrew(at)dunslane(dot)net>
2006-12-19 08:51:01 from David Fetter <david(at)fetter(dot)org>
2006-12-19 09:58:48 from Peter Eisentraut <peter_e(at)gmx(dot)net>
2006-12-20 02:00:48 from Tom Dunstan <pgsql(at)tomd(dot)cc>
2006-12-20 01:23:02 from Tom Dunstan <pgsql(at)tomd(dot)cc>
2007-02-02 03:50:12 from Bruce Momjian <bruce(at)momjian(dot)us>
2007-02-02 15:54:44 from Neil Conway <neilc(at)samurai(dot)com>
2007-02-14 00:03:47 from Tom Dunstan <pgsql(at)tomd(dot)cc>
2007-02-21 17:06:10 from Bruce Momjian <bruce(at)momjian(dot)us>
Lists:
pgsql-hackers pgsql-patches
On Tue, Dec 19, 2006 at 10:48:41AM -0500, Andrew Dunstan wrote:
> Sure, but the only sane way I can think of to do that would be have
> separate logical and physical orderings, with a map between the two. I
> guess we'd need to see what the potential space savings would be and
> establish what the processing overhead would be, before considering it.
> One side advantage would be that it would allow us to do the often
> requested "add column at position x".
A patch to allow seperate physical and logical orderings was submitted
and rejected. Unless something has changed on that front, any
discussion in this direction isn't really useful.
Once this is possible it would allow a lot of simple savings. For
example, shifting all fixed width fields to the front means they can
all be accessed without looping through the previous columns, for
example.
Have a nice day,
--
Martijn van Oosterhout <kleptog(at)svana(dot)org> http://svana.org/kleptog/
> From each according to his ability. To each according to his ability to litigate.
In response to
Responses
pgsql-hackers by date
Next :From: Matthew O'ConnorDate: 2006-12-19 16:56:17Subject : Autovacuum Improvements (was: Second attempt, roll your own autovacuum)Previous :From : Alvaro HerreraDate : 2006-12-19 16:22:47Subject : Re: Second attempt, roll your own autovacuum
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Next :From: Bruce MomjianDate: 2006-12-19 17:00:05Subject : Re: Load distributed checkpoint patchPrevious :From : Andrew DunstanDate : 2006-12-19 15:48:41Subject : column ordering, was Re: [PATCHES] Enums patch v2
