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To: Ray Madigan <ray@madigans.org>
cc: Pgsql-Sql <pgsql-sql@postgresql.org>
Subject: Re: Rules with sequence columns 
In-reply-to: <460A96ED.9000001@madigans.org> 
References: <460A96ED.9000001@madigans.org>
Comments: In-reply-to Ray Madigan <ray@madigans.org>
	message dated "Wed, 28 Mar 2007 08:25:17 -0800"
Date: Wed, 28 Mar 2007 12:17:05 -0400
Message-ID: <26419.1175098625@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>
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Ray Madigan <ray@madigans.org> writes:
> Does anyone have any suggestion?

Use a trigger to propagate the data to the other table.  You can't make
this work reliably with a rule, because rules are macros and hence
inherently subject to double-evaluation problems when dealing with
volatile functions.

			regards, tom lane