Re: AW: [HACKERS] isnull() or is it?t

From: "Thomas G(dot) Lockhart" <lockhart(at)alumni(dot)caltech(dot)edu>
To: Sferacarta Software <sferac(at)bo(dot)nettuno(dot)it>
Cc: pgsql-hackers(at)postgreSQL(dot)org, Vince Vielhaber <vev(at)michvhf(dot)com>
Subject: Re: AW: [HACKERS] isnull() or is it?t
Date: 1998-12-10 16:45:08
Message-ID: 366FFA94.15D5ECA6@alumni.caltech.edu
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On a somewhat related topic, the development parser also now supports
the SQL92-standard NULLIF(), which behaves in an opposite sense to the
common IsNull() under discussion. That is, it tests the first argument
against the second, and then returns NULL if they are equal. Weird.

- Tom

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