"Brendan Jurd" <direvus(at)gmail(dot)com> writes:
> Update. Turns out that 8.4 DOES know how to execute the view. If you
> try to group on a user-defined composite type, 8.4 just goes ahead and
> groups it, rather than giving the old "could not identify an ordering
> operator" error.
Is there a hash opclass for the type? 8.4 can group types that have
hash but not btree opclasses, but prior versions insisted on btree.
regards, tom lane