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Date: Mon, 7 Jan 2008 16:43:27 -0600
From: "Scott Marlowe" <scott.marlowe@gmail.com>
To: "Josh Williams" <joshwilliams@ij.net>
Subject: Re: Get the max(value1, value2, value3) from a table
Cc: emilu@encs.concordia.ca, pgsql-sql@postgresql.org
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On Jan 7, 2008 4:38 PM, Josh Williams <joshwilliams@ij.net> wrote:
> On Mon, 2008-01-07 at 17:03 -0500, Emi Lu wrote:
> > select ?max?(col1, col2, col3) as result;
> > will return
> >
> > result
> > -------
> > 5
> > 8
> > 12
> >
> > (3 rows)
>
> 8.1 (I believe?) introduced GREATEST(), which does precisely what you're
> looking for.

How would greatest give him three rows like that?  Maybe I'm
misunderstanding what the OP was asking for...