Re: When is a record NULL?

From: Jeff Davis <pgsql(at)j-davis(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Brendan Jurd <direvus(at)gmail(dot)com>, "David E(dot) Wheeler" <david(at)kineticode(dot)com>, PostgreSQL-development Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: When is a record NULL?
Date: 2009-07-24 18:37:13
Message-ID: 1248460633.25874.84.camel@monkey-cat.sm.truviso.com
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On Fri, 2009-07-24 at 14:10 -0400, Tom Lane wrote:
> Hmmm ... that suggests that we may not be handling IS DISTINCT FROM
> correctly for rowtypes. I haven't read that part of the spec, but
> I would've guessed that the spec wants it to be consistent with
> IS NULL.
>

Our behavior appears to match the standard, which covers this case in
8.15.General Rules.1.c.iv.

Regards,
Jeff Davis

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