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Message-ID: <3A66074D.827227D0@agliodbs.com>
Date: Wed, 17 Jan 2001 12:57:49 -0800
From: Josh Berkus <josh@agliodbs.com>
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To: sqllist <pgsql-sql@postgresql.org>
Subject: Re: RE: Help with query.   (*)
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Mike,

	In that case, you want to use this construction:

DELETE FROM a 
WHERE EXISTS ( 
	SELECT 1 FROM b
	WHERE b.1 = a.1
	  AND b.2 = a.2
	  AND b.3 = a.3 );

Of course, a good primary keying system would make this somewhat less
complex ...

					-Josh Berkus
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