If you mean like an aggregate sum of some amount by some category/item, yes, you can do this.
Example:
Table: Ledger
Fields: ItemNumber, Qty
Entries in the table are per transaction that takes place with positive quantities being added to what the company has on hand while negative quantities being subtracted from what the company has on hand.
The SELECT Clause of the query would look like:
SELECT ItemNumber, Sum(Qty)
FROM Ledger
Note, the above uses the Aggregate Sum function.
Ronald R. Dodge, Jr.
Production Statistician
Master MOUS 2000
When the going gets tough, the tough gets going.