From: Martijn Tonies
Date: October 31 2006 8:06am
Subject: Re: finding NULL records
List-Archive: http://lists.mysql.com/mysql/203020
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>Of course this will return an empty set because you have only selected
>the test_id, try this;
>
>SELECT * FROM tests WHERE test_id IS NULL

Empty set <> "empty column"


Martijn Tonies
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