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From: Michael Fuhr <mike@fuhr.org>
To: Dan Harris <fbsd@drivefaster.net>
Cc: pgsql-performance@postgresql.org
Subject: Re: Speedier count(*)
Date: Wed, 10 Aug 2005 18:36:35 -0600
Message-ID: <20050811003635.GA69508@winnie.fuhr.org> (raw)
In-Reply-To: <3E43C7D5-9DB8-4132-BF4F-607B000866E1@drivefaster.net>
References: <3E43C7D5-9DB8-4132-BF4F-607B000866E1@drivefaster.net>

On Wed, Aug 10, 2005 at 05:37:49PM -0600, Dan Harris wrote:
> Also, I am using "select ... group by ... order by .. limit 1" to get  
> the min/max since I have already been bit by the issue of min() max()  
> being slower.

PostgreSQL 8.1 will have optimizations for certain MIN and MAX
queries.

http://archives.postgresql.org/pgsql-committers/2005-04/msg00163.php
http://archives.postgresql.org/pgsql-committers/2005-04/msg00168.php

-- 
Michael Fuhr

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