Question : Calculated Fields

I have a simple question but I can't seem to find the answer anywhere.

I would like to create a field in a table and have the contents be calculated by simple arithmetic on other fields in the same record.  (I know I can use unbound controls on reports, etc, but I really want the form in the table.)

For example, I might have fields [ListPrice] and [SellingPrice] and [Markup], where [Markup] is calculated by the difference between [SellingPrice] and [ListPrice].

This is such a simple request; I can't imagine why I can't seem to find the answer.

Thanks,

Ken

Answer : Calculated Fields

Just use the above SELECT and change the querytype to an Update query with the calculation in the newly created Update-cell.
The SQL will look like:
update tableX set y = field1 - field2;

Nic;o)