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custom error message on check constraint.

  • July 18, 2009 at 11:39 am

    #95828

    Hi, I'm just wonder what is the best way or is it even possible to have a customer error message for a simple check constraint such as.

    ALTER TABLE tblJobsCL

    ADD CONSTRAINT CK_PlannedEndDate_2

    CHECK (PlannedEndDate >= PlannedStartDate)

    All the error message handling can I find in my books or online seem to be for triggers.

    Thank for your help

    Asta

  • July 18, 2009 at 11:46 am

    #1026588

    You can't put a custom error in a check constraint.

    Two options.

    1) (recommended)

    Use a check constraint, have the front end app handle the error and produce whatever custom error that you want

    2) use a trigger.

    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

    We walk in the dark places no others will enter
    We stand on the bridge and no one may pass

  • July 18, 2009 at 11:50 am

    #1026591

    Thanks, glad I asked, saves me looking for something that does not exist.

    Asta 🙂

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