How do I get the calculations made on a form to be saved in the associated
table?
Please DON'T SHOUT. It's considered impolite (and it's hard to read)
when you use all caps.
Storing derived data such as this in your table accomplishes
three things: it wastes disk space; it wastes time (almost
any calculation will be MUCH faster than a disk fetch); and
most importantly, it risks data corruption. If one of the
underlying fields is subsequently edited, you will have data
in your table WHICH IS WRONG, and no automatic way to detect
that fact.
Just redo the calculation whenever you need it, either as a
calculated field in a Query or just as you're now doing it -
in the control source of a Form or a Report textbox.
If you feel that you have a *good reason* to violate this basic
principle post back. It's doable, it's just usually a Bad Idea.
John W. Vinson[MVP]
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