| From: | Richard Guo <guofenglinux(at)gmail(dot)com> |
|---|---|
| To: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Check lateral references within PHVs for memoize cache keys |
| Date: | 2022-12-30 03:00:25 |
| Message-ID: | CAMbWs48TGnh8s=9-hJge9Et4Crf9q+_oU4FVekLoX4ommi4CVg@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Fri, Dec 9, 2022 at 5:16 PM Richard Guo <guofenglinux(at)gmail(dot)com> wrote:
> Actually we do have checked PHVs for lateral references, earlier in
> create_lateral_join_info. But that time we only marked lateral_relids
> and direct_lateral_relids, without remembering the lateral expressions.
> So I'm wondering whether we can fix that by fetching Vars (or PHVs) of
> lateral references within PlaceHolderVars and remembering them in the
> baserel's lateral_vars.
>
> Attach a draft patch to show my thoughts.
>
Update the patch to fix test failures.
Thanks
Richard
| Attachment | Content-Type | Size |
|---|---|---|
| v2-0001-Check-lateral-refs-within-PHVs-for-memoize-cache-.patch | application/octet-stream | 6.8 KB |
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