"Dean Gibson (DB Administrator)" <postgresql@xxxxxxxxxxx> 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
