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Re: query optimization question

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Dennis Bjorklund <db(at)zigo(dot)dhs(dot)org>
Cc: Jack Coates <jack(at)lyris(dot)com>,pgsql-performance <pgsql-performance(at)postgresql(dot)org>
Subject: Re: query optimization question
Date: 2004-01-30 14:51:10
Message-ID: 13026.1075474270@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-performance
Dennis Bjorklund <db(at)zigo(dot)dhs(dot)org> writes:
> Getting rid of the group by would not give that kind of speedup?

No.  Getting rid of the per-row subqueries (or at least finding a way to
make 'em a lot cheaper) is the only way to make any meaningful change.

			regards, tom lane

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