Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
Export (0) Print
Expand All
Expand Minimize

The Allow Nulls property can't be set on a column that is part of the primary key. (Visual Database Tools)

All columns that are part of a table's a primary key must contain aggregate unique values other than NULL. To add the column to a primary key, first clear the Allow Nulls check box on the Column Property dialog box.

For more information, see How to: Modify Null Options on Columns (Visual Database Tools).

Community Additions

© 2015 Microsoft