I have an iif statement in my query and the query works fine, but the data is
not being stored into the table - the field is left blank. All the other
information is entered correctly. Is it a text/number issue?
Thanks!
A field in a query can be *EITHER* a field from (one of) the underlying
table(s), or it can be a calculated expression like an IIF. It can't be both.
As Piet says, you shouldn't be storing the result of the IIF in any case.
Here's my blurb on the topic:
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.
