• True enough, Tom, and apologies for being entirely too brief on my previous response. You can limit the BIT "field" (cough, cough, gasp! 🙂 )by adding a NOT NULL constraint, as you say. I just wanted to make sure that newbies that might read this understand that doesn't change the fact that there is no Yes/No only data type in SQL Server nor will it change the fact that, nothing else provided, the BIT data type can be NULL.

    --Jeff Moden


    RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
    First step towards the paradigm shift of writing Set Based code:
    ________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

    Change is inevitable... Change for the better is not.


    Helpful Links:
    How to post code problems
    How to Post Performance Problems
    Create a Tally Function (fnTally)