Re: EXPLAIN and HashAggregate

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Stefan Kaltenbrunner <stefan(at)kaltenbrunner(dot)cc>
Cc: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: EXPLAIN and HashAggregate
Date: 2006-03-04 19:49:56
Message-ID: 25623.1141501796@sss.pgh.pa.us
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Stefan Kaltenbrunner <stefan(at)kaltenbrunner(dot)cc> writes:
> it looks like that postgresql is actually allocating the memory for the
> hashtable of the HashAggregate which is a bit unexpected for a plain
> EXPLAIN.

Not really. EXPLAIN runs plan setup (ExecutorStart).

regards, tom lane

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