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From: Tom Lane <tgl@sss.pgh.pa.us>
To: McGehee, Robert <Robert.McGehee@geodecapital.com>
Cc: pgsql-performance@postgresql.org <pgsql-performance@postgresql.org>
Subject: Re: Inefficient min/max against partition (ver 9.1.1)
Date: Fri, 02 Mar 2012 14:31:00 -0500
Message-ID: <10495.1330716660@sss.pgh.pa.us> (raw)
In-Reply-To: <17B09E7789D3104E8F5EEB0582A8D66FBAA3FCEDC0@MSGRTPCCRF2WIN.DMN1.FMR.COM>
References: <17B09E7789D3104E8F5EEB0582A8D66FBAA3FCEDC0@MSGRTPCCRF2WIN.DMN1.FMR.COM>

"McGehee, Robert" <Robert.McGehee@geodecapital.com> writes:
> On PostgreSQL 9.1.1, I'm experiencing extremely slow/inefficient
> min/max queries against a partitioned table, despite the recent
> improvements made in version 9.1.

Thanks for the report.  I believe this will fix it:
http://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=ef03b34550e3577c4be3baa25b70787f56...

			regards, tom lane

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  Subject: Re: Inefficient min/max against partition (ver 9.1.1)
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