From: Steinar H. Gunderson <sgunderson@bigfoot.com>
To: pgsql-performance@postgresql.org
Subject: Re: zero performance on query
Date: Wed, 26 Oct 2005 17:20:47 +0200
Message-ID: <20051026152047.GA15377@uio.no> (raw)
In-Reply-To: <6EE64EF3AB31D5448D0007DD34EEB3417DD6AF@Herge.rcsinc.local>
References: <6EE64EF3AB31D5448D0007DD34EEB3417DD6AF@Herge.rcsinc.local>
On Wed, Oct 26, 2005 at 08:05:21AM -0400, Merlin Moncure wrote:
> select count(*) from fotos f where not exists (select archivo from archivos a where a.archivo = f.archivo)
This was an optimization before 7.4, but probably isn't anymore.
/* Steinar */
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Homepage: http://www.sesse.net/
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To: pgsql-performance@postgresql.org
Cc: sgunderson@bigfoot.com
Subject: Re: zero performance on query
In-Reply-To: <20051026152047.GA15377@uio.no>
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