How can we test a datetime field to see if it has a empty value (has not been initialized)?

Version 1

    Details

    How can we test a datetime field to see if it has a empty value (has not been initialized)?


    Resolution

    An uninitialized DateTime field, for example:  Change.ScheduledStartDate will have an initial value of NULL.

    Therefore your test would be of the form:
    iif (ScheduledStartDate == Null) ...