Re: RFC: A brief guide to nulls

From: Peter Eisentraut <peter_e(at)gmx(dot)net>
To: dev(at)archonet(dot)com
Cc: pgsql-sql(at)postgresql(dot)org
Subject: Re: RFC: A brief guide to nulls
Date: 2003-01-15 23:44:55
Message-ID: Pine.LNX.4.44.0301152037180.789-100000@localhost.localdomain
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dev(at)archonet(dot)com writes:

> A null is *not* a value.
> A null is *not* a "special" value.
> A null is the absence of a value.

A quotation directly from the SQL standard:

Every data type includes a special value, called the null value,

This seems to directly contradict those three statements.

--
Peter Eisentraut peter_e(at)gmx(dot)net

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