Home Forums Article Discussions Article Discussions by Author Discuss content posted by Marianna Petrovich Unique constraint on a nullable column RE: Unique constraint on a nullable column

  • December 2, 2010 at 6:33 am

    #1257833

    The only worth of the question is the good news:

    "filtered index" (SQL Server 2008).

    This feature is present in MS-ACCESS starting from version 1.0 (year 1990).