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To: Jean-Luc Lachance <jllachan@nsd.ca>
Cc: "Michael S. Tibbetts" <mtibbetts@head-cfa.cfa.harvard.edu>,
	pgsql-sql@postgresql.org
Subject: Re: min() and NaN 
In-reply-to: <3F1C09B7.3990752@nsd.ca> 
References: <3F145162.7010805@head-cfa.harvard.edu>
	<19874.1058676022@sss.pgh.pa.us> <3F1C09B7.3990752@nsd.ca>
Comments: In-reply-to Jean-Luc Lachance <jllachan@nsd.ca>
	message dated "Mon, 21 Jul 2003 11:41:43 -0400"
Date: Mon, 21 Jul 2003 11:43:19 -0400
Message-ID: <5212.1058802199@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>
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Jean-Luc Lachance <jllachan@nsd.ca> writes:
> If a compare with NaN is always false, how about rewriting it as:
> result = ((arg1 < arg2) ? arg2 : arg1).

That just changes the failure mode.

			regards, tom lane