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Re: Memoize ANTI and SEMI JOIN inner - Mailing list pgsql-hackers

From Richard Guo
Subject Re: Memoize ANTI and SEMI JOIN inner
Date
Msg-id CAMbWs4_pDZYK+2RGTTjsyoRkRe+Y9rT3Y6b3XtuzcPkNTeP-zw@mail.gmail.com
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In response to Re: Memoize ANTI and SEMI JOIN inner  (Richard Guo <guofenglinux@gmail.com>)
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On Thu, Apr 10, 2025 at 7:36 PM Richard Guo <guofenglinux@gmail.com> wrote:
> On Wed, Apr 9, 2025 at 6:18 PM David Rowley <dgrowleyml@gmail.com> wrote:
> > On Wed, 9 Apr 2025 at 18:48, Richard Guo <guofenglinux@gmail.com> wrote:
> > > Perhaps we could spend some planner cycles proving inner_unique for
> > > anti joins, so that Memoize nodes can be considered for them?

> > Worth a try. It should be pretty easy to enable, as far as I can see.
> > It might just be a case of shuffling the cases around in the switch
> > statement in add_paths_to_joinrel().

> Right.  Here is a patch for that.

Here's a rebased version with no other changes.

David, Andrei, would you like to take another look?  I'm planning to
push it soon.

Thanks
Richard
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