Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> writes:
> There is some stuff in the literature about how to make transformations
> of the last kind, but it requires additional executor smarts to do strange
> sorts of "generalized outer join" operations.
Would these "generalized outer join" operations be general enough to handle IN
semantics? Or other subqueries?
--
greg