Michael,

>Select < clause A >;
>Union Select < clause B > Where NOT Exists Select < clause A >

AFAIK, VFP executes three queries to accomplish this task. IMO there is a better way to accomplish the same goal. You can leave the last query out because the union combines those two and filters out the duplicates. In that case the query would be something like:

Select < clause A > Union Select < clause B >

HTH

Walter,