Please bear with a neophyte question ... I am tempted to apply HeapTupleGetDatum to a tuple retrieved from the syscache (as I already have code for processing a tuple presented as a Datum).
But I see a comment on HeapTupleHeaderGetDatum: "This must *not* get applied to an on-disk tuple; the tuple should be freshly made by heap_form_tuple or some wrapper ..." ... and here I confess I'm unsure whether a tuple retrieved from the syscache is more like an on-disk one, or a freshly-made one, for purposes of the warning in that comment. Is there a conventional proper way to pass a tuple retrieved from syscache to code that accepts a tuple as a Datum? Or is there some fundamental reason a smart person wouldn't do that? Thanks, -Chap -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
