>Is uniqueness based on a single field or a combination of fields for a record to be considered "unique"?
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>>>As part of my thesis at Navy Postgraduate School, I have a genetic algorithm that runs in MS VFP 5.0. The output of the GA is a

Larry, I can't tell you that I'll proven the answer to how DISTINCT works, I have taken it for face value from the manual that it compares the complete record. So far that seems to be the results I have gotten from it.