Hi Bill,

I have reached an impasse with the case function. I would like to test my inventoried books in my library against my book database. I used a case function that worked correctly as long as the book was inventoried.


Case ( Inventory 09::ISBN >50000; "Present";Inventory 09::ISBN= 0;"Walked") Here is the case function that I used. But since there is no record for a book not inventoried, I cannot ascribe a value to it. This case function returns a "present" value in the book database. But the walked or missing books are not there and have no value to test again. Is there another function that would work better.

I typically use the IsValid() funciton in these cases. That is, as far as I understand your formula, it would be that:

If ( IsValid( Inventory 09::ISBN );
  "Present";
  "Walked" )

--
Mikhail Edoshin
[email protected]

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