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To: "=?iso-8859-1?B?QW5kcukgTuZzcw==?=" <andre.nass@student.uib.no>
cc: pgsql-sql@postgresql.org
Subject: Re: Conditional rule? 
In-reply-to: <013001bff889$86051030$74b5f8c2@wkst6> 
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Comments: In-reply-to "=?iso-8859-1?B?QW5kcukgTuZzcw==?="
	<andre.nass@student.uib.no>
	message dated "Fri, 28 Jul 2000 13:46:51 +0200"
Date: Fri, 28 Jul 2000 11:13:31 -0400
Message-ID: <29738.964797211@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>
X-Archive-Number: 200007/273

"=?iso-8859-1?B?QW5kcukgTuZzcw==?=" <andre.nass@student.uib.no> writes:
> Secondly, I miss one final idea, when a delete is performed on the
> b_news_unpublished table, I would like to set up a rule or procedure that
> sets the time value to null in b_news for each row that is affected by the
> delete. I understand that the OLD and NEW objects are accessible only during
> UPDATE or INSERT operations, so I can't quite see how to do this...

I might be wrong, but I thought the way it works is:
	INSERT: "NEW" refers to to-be-inserted row
	UPDATE: "OLD" is old row state, "NEW" is planned new row state
	DELETE: "OLD" holds row to be deleted

			regards, tom lane