Alvaro Herrera <alvherre(at)commandprompt(dot)com> writes:
> I wonder if the code is already able to transform right joins to left
> joins, like
> (A rightjoin B on (Pab)) = (B leftjoin A on (Pab))
Yeah, we already know that part. It's a freebie --- I didn't even
bother mentioning rightjoin in my post, since it's equivalent to
leftjoin after swapping the inputs.
regards, tom lane