Re: why the need for is null?

From: Mark Kirkwood <markir(at)paradise(dot)net(dot)nz>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Baldur Norddahl <bbn-pgsql(dot)general(at)clansoft(dot)dk>, pgsql-general(at)postgresql(dot)org
Subject: Re: why the need for is null?
Date: 2004-01-02 01:12:37
Message-ID: 3FF4C585.9020504@paradise.net.nz
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Tom Lane wrote:

>Not sure that it's fair to characterize this as a property of the
>relational model. It is a property of the SQL standard.
>
Yes indeed - I fell into the classic "Relational model and SQL are not
the same thing" trap !

Mark

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