>I'm looking for a way to speed up a calculation routine that computes the total of a document that can contain up to a few hundred lines. The routine is slow now because for each line I access the db. I'm looking for a way to implement this in a more data oriented way.
>
>In VFP I would have dumped the relevant keys into a cursor and then join the tables to the cursor in an sql statement.
>
>I could of course simulate this by dumping the keys into a temporary table (which if I'm right would not limit the amount of times I access the db), but I was wondering if there is not a more "elegant" way to do this.
>
>TIA.

I'm not sure I understand you right, but you could use derived tables in your SELECT.

SELECT .....
FROM MainTable
INNER JOIN (SELECT Keys From SomeTable WHERE ...) DympedKeys
   ON ....