Re: Pathify RHS unique-ification for semijoin planning - Mailing list pgsql-hackers

On Tue, Jul 1, 2025 at 11:57 AM Richard Guo <guofenglinux@gmail.com> wrote:
> On Tue, Jun 3, 2025 at 4:52 PM Richard Guo <guofenglinux@gmail.com> wrote:
> > Here is an updated version of the patch, which is ready for review.
> > I've fixed a cost estimation issue, improved some comments, and added
> > a commit message.  Nothing essential has changed.

> This patch does not apply anymore, and here is a new rebase.

This patch does not apply again, so here is a new rebase.

This version also fixes an issue related to parameterized paths: if
the RHS has LATERAL references to the LHS, unique-ification becomes
meaningless because the RHS depends on the LHS, and such paths should
not be generated.

Thanks
Richard