Instead of just being able to specify an index to use, how hard would it
be to allow COPY TO to work from a generic query instead of just a
table? That way you wouldn't need to do a diff, you could just export
only new records. ISTM there's far more use for copying from a query
result that just copying by index order.
--
Jim C. Nasby, Database Consultant decibel(at)decibel(dot)org
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