>>>>empty(date) = glempty_or_not
>>>>
>>>>and set glempty_or_not to .T. or .F. depending on what the user wants
>>>
>>>Excellent solution, and can be implemented through View Designer too.
>>>Surely, it's better to have index tag on empty(date).
>>
>>No need for that - I think Empty() is optimizable if expression we are
>>checking is optimizable.
>
>IMHO, index tag would be helpful anyway whatever optimization potential of the expression.

empty(myfield) is _not_ optimizable without an index on that expression.