Re: BUG #19435: Error: "No relation entry for relid 2" Triggered by Complex Join with Self-Referencing Tables
Andrei Lepikhov <lepihov@gmail.com>
From: Andrei Lepikhov <lepihov@gmail.com>
To: Kirill Reshke <reshkekirill@gmail.com>
Cc: Alexander Korotkov <aekorotkov@gmail.com>,
Tender Wang <tndrwang@gmail.com>, Fujii Masao <masao.fujii@gmail.com>,
ammmkilo@163.com, pgsql-bugs@lists.postgresql.org
Date: 2026-03-19T07:18:03Z
Lists: pgsql-bugs
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. -- regards, Andrei Lepikhov, pgEdge
Commits
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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