"Dean Gibson (DB Administrator)" <postgresql@mailpen.com> writes:
> I thought that having a "USING" clause, was semantically equivalent to
> an "ON" clause with the equalities explicitly stated. So no, I didn't
> try that.
USING is not that, or at least not only that ... read the manual.
I'm wondering if what you saw is some side-effect of the aliasing
that USING does.
regards, tom lane
