On Fri, Oct 31, 2008 at 11:09 AM, Dee Ayy <[EMAIL PROTECTED]> wrote:
> ...
> IF OLD.ShipDate != NEW.ShipDate AND NEW.ShipDate IS NOT NULL THEN
> ...

The following seems to work.  Is it correct and not too verbose?
IF (OLD.StatusShipDate IS NULL AND NEW.StatusShipDate IS NOT NULL) OR
(OLD.StatusShipDate != NEW.StatusShipDate AND NEW.StatusShipDate IS
NOT NULL) THEN

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