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Multicolumn primary key with null value
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: PostgreSQL <
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Subject
: Multicolumn primary key with null value
From
: Szymon Guz <
mabewlun@xxxxxxxxx
>
Date
: Thu, 22 Apr 2010 19:34:38 +0200
Does any SQL standard allows for a multicolumn primary key where in one record there is a null in on of the primary key columns?
regards
Szymon Guz
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