| 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: | 2023-07-04 07:33:22 |
| Message-ID: | CAMbWs4_E2HcTJ0b2srM3hwnQbH5SogkZMM399WUG4gTQSa1FOQ@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Fri, Dec 30, 2022 at 11:00 AM Richard Guo <guofenglinux(at)gmail(dot)com> wrote:
> 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.
>
Rebase the patch on HEAD as cfbot reminds.
Thanks
Richard
| Attachment | Content-Type | Size |
|---|---|---|
| v3-0001-Check-lateral-refs-within-PHVs-for-memoize-cache-keys.patch | application/octet-stream | 7.0 KB |
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