From: | Emmanuel Cecchet <manu(at)asterdata(dot)com> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | Greg Stark <gsstark(at)mit(dot)edu>, Emmanuel Cecchet <manu(at)asterdata(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: DISTINCT ON |
Date: | 2009-11-04 13:41:35 |
Message-ID: | 4AF1848F.8010602@asterdata.com |
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Lists: | pgsql-hackers |
Tom Lane wrote:
> Greg Stark <gsstark(at)mit(dot)edu> writes:
>
>> On Wed, Nov 4, 2009 at 3:17 AM, Emmanuel Cecchet <manu(at)asterdata(dot)com> wrote:
>>
>>> SELECT DISTINCT ON ('1'::varchar, '1'::varchar) a FROM (SELECT 1 AS a) AS a
>>> ORDER BY '1'::varchar, '1'::varchar, '2'::varchar;
>>>
>
>
>> This sounds familiar. What version of Postgres are you testing this on?
>>
>
> Presumably something before this bug
> http://archives.postgresql.org/pgsql-sql/2008-07/msg00123.php
> got fixed
> http://archives.postgresql.org/pgsql-committers/2008-07/msg00341.php
>
I am using 8.3.6 and it looks like the fix was only integrated in 8.4.
So using 8.4 should solve the problem.
Thanks
Emmanuel
--
Emmanuel Cecchet
Aster Data
Web: http://www.asterdata.com
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