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To: "J rg Holetschek" <mail2holly@gmx.de>
Cc: pgsql-sql@postgresql.org
Subject: Re: CHECK clause doesn't work with CASE clause 
In-reply-to: <afenai$2291$1@news.hub.org> 
References: <afenai$2291$1@news.hub.org>
Comments: In-reply-to "J rg Holetschek" <mail2holly@gmx.de>
	message dated "Thu, 27 Jun 2002 11:52:54 +0200"
Date: Thu, 27 Jun 2002 09:44:13 -0400
Message-ID: <25000.1025185453@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>
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"Jörg Holetschek" <mail2holly@gmx.de> writes:
>                   CASE
>                      WHEN ((focus <> NULL) AND (epilepsy_class = 'f')) THEN
> TRUE

Try "focus IS NOT NULL".

			regards, tom lane