> (back from a short vacation...)
>
> > How do you propose doing outer joins in non-mergejoin situations?
> > Mergejoins can only be used currently in equal joins.
>
> Hadn't thought about it, other than figuring that implementing the
> equi-join first was a good start. There is a class of outer join syntax
> (the USING clause) which is implicitly an equi-join...
Not that easy. You don't automatically get a mergejoin from an
equijoin. I will have to force outer's to be either mergejoins, or
inners of non-merge joins. Can you add code to non-merge joins in the
executor to throw out a null row if it does not find an inner match for
the outer row, and I will handle the optimizer so it doesn't throw a
non-conforming plan to the executor.
-- Bruce Momjian | http://www.op.net/~candle maillist@candle.pha.pa.us | (610)
853-3000+ If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill,
Pennsylvania19026
