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before insert trigger

  • November 5, 2011 at 5:40 am

    #246328

    Hi,

    I've a table with run_time column with data type of datetime and description column with data type of nvarchar (1024)

    i need to write a before trigger to check if the run_time and description exists in the table then rollback.

    i can't put a unique index to both columns because i need to filter the run_time column that will compare to the date only and not the time.CONVERT(NVARCHAR(20),RUN_TIME,103)

    how can i accomplish this?

    THX

  • November 5, 2011 at 6:11 am

    #1403604

    Can you add a computed persisted column based on the run_time column to hold the date value only and add a unique constraint to it?

    Probably a better performing solution than the trigger approach...


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