Re: Removing unneeded self joins
Andrei Lepikhov <a.lepikhov@postgrespro.ru>
Commits
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the thread's linked commits as JSON, with link sources.
API reference →
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Remove GUC_NOT_IN_SAMPLE from enable_self_join_elimination
- 717d0e8dd945 18.0 landed
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Put enable_self_join_elimination into postgresql.conf.sample
- c2d329260cd8 18.0 landed
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Get rid of ojrelid local variable in remove_rel_from_query()
- e167191dc146 18.0 landed
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Implement Self-Join Elimination
- fc069a3a6319 18.0 cited
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Revert: Remove useless self-joins
- d1d286d83c0e 17.0 landed
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Replace lateral references to removed rels in subqueries
- 466979ef031a 17.0 landed
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Replace relids in lateral subquery parse tree during SJE
- 489072ab7a9e 17.0 landed
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Forbid SJE with result relation
- 8c441c082797 17.0 landed
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Fix misuse of RelOptInfo.unique_for_rels cache by SJE
- 30b4955a4668 17.0 landed
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Replace the relid in some missing fields during SJE
- a7928a57b9f0 17.0 landed
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Revert 56-bit relfilenode change and follow-up commits.
- a448e49bcbe4 16.0 cited
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Stabilize timetz test across DST transitions.
- 4a071afbd056 14.0 cited
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Speed up finding EquivalenceClasses for a given set of rels
- 3373c7155350 13.0 cited
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Fix mark-and-restore-skipping test case to not be a self-join.
- 24d08f3c0a1f 12.0 landed
Attachments
- v41-v42-delta.txt (text/plain)
- v42-0001-Remove-self-joins.patch (text/plain) patch v42-0001
Hi, During the significant code revision in v.41 I lost some replacement operations. Here is the fix and extra tests to check this in the future. Also, Tom added the JoinDomain structure five months ago, and I added code to replace relids for that place too. One more thing, I found out that we didn't replace SJs, defined by baserestrictinfos if no one self-join clause have existed for the join. Now, it is fixed, and the test has been added. To understand changes readily, see the delta file in the attachment. -- regards, Andrey Lepikhov Postgres Professional