From: Tom Lane <tgl@sss.pgh.pa.us>
To: Ang Chin Han <angch@bytecraft.com.my>
Cc: Greg Stark <gsstark@mit.edu>
Cc: Josh Berkus <josh@agliodbs.com>
Cc: Stefan Bill <sjb26@yahoo.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: LEAST and GREATEST functions?
Date: Wed, 02 Jul 2003 01:37:22 -0400
Message-ID: <24828.1057124242@sss.pgh.pa.us> (raw)
In-Reply-To: <3F025942.6000507@bytecraft.com.my>
References: <20030630201057.14507.qmail@web13905.mail.yahoo.com>
<200306302032.23113.josh@agliodbs.com>
<87d6gu2otf.fsf@stark.dyndns.tv>
<3F025942.6000507@bytecraft.com.my>
Ang Chin Han <angch@bytecraft.com.my> writes:
> If LEAST and GREATEST can accept any number of parameters, wouldn't it
> make sense to code it like the way COALESCE works, rather than defining
> a function for it? This way we don't need define all the various
> functions with different types.
But COALESCE is a special feature hard-wired into the parser. There's
no free lunch --- you pay for your extensibility somewhere.
regards, tom lane
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To: pgsql-sql@postgresql.org
Cc: tgl@sss.pgh.pa.us, angch@bytecraft.com.my, gsstark@mit.edu, josh@agliodbs.com, sjb26@yahoo.com
Subject: Re: LEAST and GREATEST functions?
In-Reply-To: <24828.1057124242@sss.pgh.pa.us>
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