Home Forums SQL Server 2008 SQL Server Newbies Apply Unique constraints on existing database RE: Apply Unique constraints on existing database

  • February 18, 2014 at 4:26 am

    #1689813

    I already did.

    GilaMonster (2/17/2014)

    For 2005, define a computed column on ISNULL(<column that you want to be unique>,<the primary key column of the table>) and put a unique index on that computed column.

    Gail Shaw
    Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
    SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

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