• For what I understood, there's one condition missing in the previous solutions.

    Here's my guess (since I have nothing to test on)

    Declare

    @OrdNbr CoNumType

    Select ISNULL( order_nbr, 'xxxxxx') order_nbr, field1, field2, field3

    from table

    where order_nbr = @Ord_nbr

    OR( order_nbr IS NULL AND @Ord_nbr IS NULL)

    Luis C.
    General Disclaimer:
    Are you seriously taking the advice and code from someone from the internet without testing it? Do you at least understand it? Or can it easily kill your server?

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