FIX: ALTER TABLE Allows Nulls in PRIMARY KEYLast reviewed: May 1, 1997Article ID: Q136808 |
The information in this article applies to:
SYMPTOMSThe ALTER TABLE command allows the inclusion of nullable columns if used to create a PRIMARY KEY. This should not be allowed.
STATUSMicrosoft has confirmed this to be a problem in Microsoft SQL Server version 6.0. This problem was corrected in Service Pack 1 for SQL Server version 6.0. For more information, contact your primary support provider.
MORE INFORMATIONPrimary keys should not allow any nullable columns; this is enforced if the key is created using CREATE TABLE. However, nullable columns were being allowed when ALTER TABLE was used to create the PRIMARY KEY, and this should not have been the case.
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Additional query words: primary key pk
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