not null columns

From: "Christopher Kings-Lynne" <chriskl(at)familyhealth(dot)com(dot)au>
To: "Hackers" <pgsql-hackers(at)postgresql(dot)org>
Subject: not null columns
Date: 2001-12-12 06:46:02
Message-ID: GNELIHDDFBOCMGBFGEFOAELMCAAA.chriskl@familyhealth.com.au
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Is there any problem at all with just twiddling the 'attnotnull' field in
the pg_attribute table to make a column NULL where before it was NOT NULL?

Chris

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