Horton

RE: speeding up planning with partitions

Tsunakawa, Takayuki <tsunakawa.takay@jp.fujitsu.com>

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From: "Tsunakawa, Takayuki" <tsunakawa.takay@jp.fujitsu.com>
To: 'David Rowley' <david.rowley@2ndquadrant.com>, "Imai, Yoshikazu" <imai.yoshikazu@jp.fujitsu.com>
Cc: Amit Langote <Langote_Amit_f8@lab.ntt.co.jp>, Alvaro Herrera <alvherre@2ndquadrant.com>, Pg Hackers <pgsql-hackers@postgresql.org>
Date: 2019-02-08T01:50:40Z
Lists: pgsql-hackers 
From: David Rowley [mailto:david.rowley@2ndquadrant.com]
> It's good to see work being done to try and improve this, but I think
> it's best to do it on another thread. I think there was some agreement
> upthread about this not being Amit's patch's problem. Doing it here
> will make keeping track of this more complex than it needs to be.
> There's also Amit's issue of keeping his patch series up to date. The
> CFbot is really useful to alert patch authors when that's required,
> but having other patches posted to the same thread can cause the CFbot
> to check the wrong patch.

OK, you're right.  I'll continue this on another thread.


Regards
Takayuki Tsunakawa

Commits

  1. Clean up handling of constraint_exclusion and enable_partition_pruning.

  2. Add test case exercising formerly-unreached code in inheritance_planner.

  3. Speed up planning when partitions can be pruned at plan time.

  4. Avoid crash in partitionwise join planning under GEQO.

  5. Avoid passing query tlist around separately from root->processed_tlist.

  6. Build "other rels" of appendrel baserels in a separate step.

  7. Get rid of duplicate child RTE for a partitioned table.

  8. Rearrange make_partitionedrel_pruneinfo to avoid work when we can't prune.

  9. Don't copy PartitionBoundInfo in set_relation_partition_info.

  10. Move building of child base quals out into a new function

  11. Reorganize planner code moved in b60c39759908

  12. Move inheritance expansion code into its own file

  13. Fix inherited UPDATE/DELETE with UNION ALL subqueries.

  14. Rearrange planner to save the whole PlannerInfo (subroot) for a subquery.