Horton

Re: speeding up planning with partitions

Alvaro Herrera <alvherre@2ndquadrant.com>

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From: Alvaro Herrera <alvherre@2ndquadrant.com>
To: Amit Langote <Langote_Amit_f8@lab.ntt.co.jp>
Cc: David Rowley <david.rowley@2ndquadrant.com>, Amit Langote <amitlangote09@gmail.com>, "Imai, Yoshikazu" <imai.yoshikazu@jp.fujitsu.com>, Pg Hackers <pgsql-hackers@postgresql.org>
Date: 2019-01-16T19:32:20Z
Lists: pgsql-hackers 
On 2019-Jan-11, Amit Langote wrote:

> Looking around a bit more, I started thinking even build_child_join_sjinfo
> doesn't belong in appendinfo.c (just to be clear, it was defined in
> prepunion.c before this commit), so maybe we should move it to joinrels.c
> and instead export adjust_child_relids that's required by it from
> appendinfo.c.  There's already adjust_child_relids_multilevel in
> appendinfo.h, so having adjust_child_relids next to it isn't too bad.  At
> least not as bad as appendinfo.c exporting build_child_join_sjinfo for
> joinrels.c to use.

OK, pushed, thanks.  I may have caused merge conflicts with the rest of
the series, because I reordered some functions -- sorry about that.

-- 
Álvaro Herrera                https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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.