Horton

Re: speeding up planning with partitions

Amit Langote <langote_amit_f8@lab.ntt.co.jp>

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From: Amit Langote <Langote_Amit_f8@lab.ntt.co.jp>
To: "Imai, Yoshikazu" <imai.yoshikazu@jp.fujitsu.com>
Cc: "'David Rowley'" <david.rowley@2ndquadrant.com>, "'Alvaro Herrera'" <alvherre@2ndquadrant.com>, "'Pg Hackers'" <pgsql-hackers@postgresql.org>
Date: 2019-01-08T06:30:10Z
Lists: pgsql-hackers

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On 2018/12/27 20:25, Amit Langote wrote:
> Here's the v10 of the patch.  I didn't get chance to do more changes than
> those described above and address Imai-san's review comments yesterday.
> 
> Have a wonderful new year!  I'll be back on January 7 to reply on this thread.

Rebased due to changed copyright year in prepunion.c.  Also realized that
the new files added by patch 0004 still had 2018 in them.

Thanks,
Amit

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.