From:
Andrew Dunstan <andrew(at)dunslane(dot)net>
To:
Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc:
Stephen Frost <sfrost(at)snowman(dot)net>, Bruce Momjian <bruce(at)momjian(dot)us>,
Peter Eisentraut <peter_e(at)gmx(dot)net>,
pgsql-hackers(at)postgresql(dot)org
Subject:
Re: [PATCH] COPY .. COMPRESSED
Date:
2013-01-15 23:33:19
Message-ID:
50F5E73F.5090808@dunslane.net (view raw or flat )
Thread:
2013-01-14 02:16:44 from Stephen Frost <sfrost(at)snowman(dot)net>
2013-01-14 03:34:33 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2013-01-14 13:43:11 from Stephen Frost <sfrost(at)snowman(dot)net>
2013-01-14 14:23:31 from Simon Riggs <simon(at)2ndQuadrant(dot)com>
2013-01-14 16:01:06 from Stephen Frost <sfrost(at)snowman(dot)net>
2013-01-14 16:06:47 from Claudio Freire <klaussfreire(at)gmail(dot)com>
2013-01-14 16:24:52 from Stephen Frost <sfrost(at)snowman(dot)net>
2013-01-14 16:13:17 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2013-01-14 16:28:30 from Stephen Frost <sfrost(at)snowman(dot)net>
2013-01-14 21:56:05 from Peter Eisentraut <peter_e(at)gmx(dot)net>
2013-01-15 02:33:39 from Stephen Frost <sfrost(at)snowman(dot)net>
2013-01-15 13:35:57 from Greg Stark <stark(at)mit(dot)edu>
2013-01-15 17:22:53 from Garick Hamlin <ghamlin(at)isc(dot)upenn(dot)edu>
2013-01-15 14:55:31 from Claudio Freire <klaussfreire(at)gmail(dot)com>
2013-01-15 16:08:45 from Stephen Frost <sfrost(at)snowman(dot)net>
2013-01-15 17:22:56 from Claudio Freire <klaussfreire(at)gmail(dot)com>
2013-01-15 17:31:17 from Stephen Frost <sfrost(at)snowman(dot)net>
2013-01-16 22:05:30 from Robert Haas <robertmhaas(at)gmail(dot)com>
2013-01-15 15:22:25 from Peter Eisentraut <peter_e(at)gmx(dot)net>
2013-01-15 15:55:04 from Stephen Frost <sfrost(at)snowman(dot)net>
2013-01-15 19:24:09 from Bruce Momjian <bruce(at)momjian(dot)us>
2013-01-15 19:53:29 from Stephen Frost <sfrost(at)snowman(dot)net>
2013-01-15 20:37:07 from Christopher Browne <cbbrowne(at)gmail(dot)com>
2013-01-15 20:42:48 from Bruce Momjian <bruce(at)momjian(dot)us>
2013-01-15 21:22:48 from Stephen Frost <sfrost(at)snowman(dot)net>
2013-01-15 22:22:47 from Bruce Momjian <bruce(at)momjian(dot)us>
2013-01-15 22:24:37 from Stephen Frost <sfrost(at)snowman(dot)net>
2013-01-15 21:20:46 from Stephen Frost <sfrost(at)snowman(dot)net>
2013-01-16 22:15:49 from Robert Haas <robertmhaas(at)gmail(dot)com>
2013-01-16 22:40:17 from Christopher Browne <cbbrowne(at)gmail(dot)com>
2013-01-15 21:50:08 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2013-01-15 22:19:58 from Stephen Frost <sfrost(at)snowman(dot)net>
2013-01-15 22:46:57 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2013-01-15 23:07:01 from Stephen Frost <sfrost(at)snowman(dot)net>
2013-01-15 23:17:05 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2013-01-15 23:22:59 from Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
2013-01-15 23:33:19 from Andrew Dunstan <andrew(at)dunslane(dot)net>
2013-01-16 02:44:45 from Claudio Freire <klaussfreire(at)gmail(dot)com>
2013-01-16 23:19:09 from Robert Haas <robertmhaas(at)gmail(dot)com>
2013-01-16 23:25:49 from Bruce Momjian <bruce(at)momjian(dot)us>
2013-01-16 23:31:44 from Stephen Frost <sfrost(at)snowman(dot)net>
2013-01-17 02:48:16 from Claudio Freire <klaussfreire(at)gmail(dot)com>
2013-01-16 20:04:45 from Peter Eisentraut <peter_e(at)gmx(dot)net>
2013-01-16 20:12:08 from Stephen Frost <sfrost(at)snowman(dot)net>
Lists:
pgsql-hackers
On 01/15/2013 06:22 PM, Tom Lane wrote:
> Stephen Frost <sfrost(at)snowman(dot)net> writes:
>> Perhaps I'm taking a bit too narrow view of the world, but my thinking
>> is OLTP won't want things compressed, as it increases latency of
>> requests, while OLAP users are operating with enough data that they'll
>> go through the effort to use COPY.
> Also, if there are so many people using COPY in their apps, why have we
> never seen any submitted patches to extend libpq with functions to
> construct/deconstruct COPY data? Surely somebody would have said to
> themselves that they shouldn't be responsible for knowing those escaping
> rules.
There are perfectly good libraries in Perl and other languages for
constructing/deconstructing CSV data. If we didn't have CSV
import/export I suspect we would have heard lots more howls by now.
cheers
andrew
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