Re: not in vs not exists - vastly diferent performance

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "Iain" <iain(at)mst(dot)co(dot)jp>
Cc: pgsql-sql(at)postgresql(dot)org
Subject: Re: not in vs not exists - vastly diferent performance
Date: 2003-12-25 16:32:21
Message-ID: 20597.1072369941@sss.pgh.pa.us
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"Iain" <iain(at)mst(dot)co(dot)jp> writes:
> I found this interesting and thought I'd offer it up for comment.

You didn't say what PG version you are using, but I'd venture to bet
it is pre-7.4.

regards, tom lane

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