adding "is null" to an existing column with stored data

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From: Jack
Date: Tue, 17 Dec 2002 13:20

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Hello,

Is it possible in IB 6 to add PRIMARY KEY NOT NULL constraints to an
existing column (numeric) with data already stored in?

For your help thanx in advance

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From: "Jack" <pjacek@softhome.net>
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Subject: adding "is null" to an existing column with stored data
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