Re: BUG #19435: Error: "No relation entry for relid 2" Triggered by Complex Join with Self-Referencing Tables
Alexander Korotkov <aekorotkov@gmail.com>
From: Alexander Korotkov <aekorotkov@gmail.com>
To: Andrei Lepikhov <lepihov@gmail.com>
Cc: Kirill Reshke <reshkekirill@gmail.com>, Tender Wang <tndrwang@gmail.com>, Fujii Masao <masao.fujii@gmail.com>, ammmkilo@163.com,
pgsql-bugs@lists.postgresql.org
Date: 2026-03-19T13:03:17Z
Lists: pgsql-bugs
Attachments
- v2-0001-Fix-self-join-removal-to-update-bare-Var-referenc.patch (application/octet-stream) patch v2-0001
On Thu, Mar 19, 2026 at 9:18 AM Andrei Lepikhov <lepihov@gmail.com> wrote: > On 18/3/26 18:55, Kirill Reshke wrote: > > On Wed, 18 Mar 2026 at 18:31, Andrei Lepikhov <lepihov@gmail.com> wrote: > >> > >> On 18/3/26 13:21, Alexander Korotkov wrote: > >>> On Wed, Mar 18, 2026 at 2:18 PM Andrei Lepikhov <lepihov@gmail.com> wrote: > >>>> What is the reason for the second change? Tender, can you show us how to > >>>> reproduce the issue so we can support your update to > >>>> restrict_infos_logically_equal? If we include it, we should add a test. > >>> > >>> I think Tender already shown this in [1]. The same qual is present > >>> twice in the plan. > >> Got it. I suggest making this a separate commit to keep the history > >> clear. Let me share a draft with a test case for the bug fix first. > > Hi! > > Is `cool_bool` a typo of `col_bool` in regression test ? > > This is actually a happy coincidence, not a typo. We made this mistake > during initial development because I didn't realise that a boolean > operation on a bool variable is never wrapped in an expression > structure. It's a 'cool' example that shows a rare edge case. > > > And the patch seems to have forgotten to add "Reported by". > > Yeah, let the committer manage the award part. I've revised the patch. Renamed cool_bool to cool_col, added "Reported by", and revised authors list according to my opinion. ------ Regards, Alexander Korotkov Supabase
Commits
-
Further improve commentary about ChangeVarNodesWalkExpression()
- 6888658516a2 19 (unreleased) landed
- 8c73ab9da9f1 18.4 landed
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Improve commentary about ChangeVarNodesWalkExpression().
- a0e0b3cc685a 18.4 landed
- 360dd6f7b4c5 19 (unreleased) landed
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Fix self-join removal to update bare Var references in join clauses
- e8b9d6497469 18.4 landed
- 07b7a964d368 19 (unreleased) landed
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Implement Self-Join Elimination
- fc069a3a6319 18.0 cited