From: Greg Stark <gsstark@mit.edu>
To: Stephan Szabo <sszabo@megazone.bigpanda.com>
Cc: Stefan Weiss <spaceman@foo.at>
Cc: pgsql-sql@postgresql.org
Subject: Re: FW: "=" operator vs. "IS"
Date: 29 Jun 2004 13:33:23 -0400
Message-ID: <873c4ez2u4.fsf@stark.xeocode.com> (raw)
In-Reply-To: <20040628161747.C38283@megazone.bigpanda.com>
References: <7A4ADADFC8AFF0478D47F63BEDD57CE33A320C@gpmail.gphq.genpathpharma.com>
<200406290102.24885.spaceman@foo.at>
<20040628161747.C38283@megazone.bigpanda.com>
Stephan Szabo <sszabo@megazone.bigpanda.com> writes:
> IS TRUE and IS FALSE have a different effect from =true and =false when
> the left hand side is NULL. The former will return false, the latter will
> return NULL.
No, actually they both return false.
(But thanks, I didn't even realize they were special this way)
--
greg
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To: pgsql-sql@postgresql.org
Cc: gsstark@mit.edu, sszabo@megazone.bigpanda.com, spaceman@foo.at
Subject: Re: FW: "=" operator vs. "IS"
In-Reply-To: <873c4ez2u4.fsf@stark.xeocode.com>
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