>>Do you want to select fields from the Details table as well? E.g. can you select the same fields (PO Header only) but set SQL statement to use both tables to specify both conditions?
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>No, I don't need to select fields from Details table. Just to have it in the SQL Select (as in LEFT JOIN ...). I will have to test it. Your last sentence would be what I am looking for except you put a question mark at the end. Which I interpret that you are not sure (and if you are not who is?! <g>)

Yes, that's my style, actually. I'm usually not 100% sure in all my suggestions, so I word them as questions. When I'm 100% sure I most likely will end up with the . at the end.