Re: OUTER 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.

So far I don't have enough info in the parser to get the
planner/optimizer going. Should we work from the front to the back, or
should I go ahead and look at the non-merge joins? It's painfully
obvious that I don't know anything about the middle parts of this to
proceed without lots more research.
                       - Tom