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My fellow geeks:

My SQL project is progressing nicely, but I've run into yet another place where I'm at a bit of a loss.

I need to be able to UNION or INTERSECT an arbitrary number of identically-structured files, and I need to, at times, EXCEPT records from that intersection or union, based on the records in yet another identically-structured file.

I note that AS/400 SQL, at least at V4, has a UNION, but not an INTERSECT or an EXCEPT. Can anybody suggest where I should be looking for an alternate way to do this?

--
JHHL

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