Bruce Momjian wrote:
>
> OK, I have added code to allow the SubLinks make it to the optimizer.
>
> I implemented ParseState->parentParseState, but not parentQuery, because
> the parentParseState is much more valuable to me, and Vadim thought it
> might be useful, but was not positive. Also, keeping that parentQuery
> pointer valid through rewrite may be difficult, so I dropped it.
> ParseState is only valid in the parser.
>
> I have not done:
>
> correlated subquery column references
> added Var->sublevels_up
> gotten this to work in the rewrite system
> have not added full CopyNode support
>
> I will address these in the next few days.
Nice! I'm starting with non-correlated subqueries...
Vadim
