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To: "Iain" <iain@mst.co.jp>
Cc: pgsql-sql@postgresql.org
Subject: Re: not in vs not exists - vastly diferent performance 
In-reply-to: <013d01c3ca89$7307d7d0$7201a8c0@mst1x5r347kymb> 
References: <013d01c3ca89$7307d7d0$7201a8c0@mst1x5r347kymb>
Comments: In-reply-to "Iain" <iain@mst.co.jp>
	message dated "Thu, 25 Dec 2003 10:50:18 +0900"
Date: Thu, 25 Dec 2003 11:32:21 -0500
Message-ID: <20597.1072369941@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>
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"Iain" <iain@mst.co.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