Horton

Re: [HACKERS] Partition-wise join for join between (declaratively) partitioned tables

Rajkumar Raghuwanshi <rajkumar.raghuwanshi@enterprisedb.com>

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From: Rajkumar Raghuwanshi <rajkumar.raghuwanshi@enterprisedb.com>
To: Ashutosh Bapat <ashutosh.bapat@enterprisedb.com>
Cc: Robert Haas <robertmhaas@gmail.com>, Amit Langote <Langote_Amit_f8@lab.ntt.co.jp>, Etsuro Fujita <fujita.etsuro@lab.ntt.co.jp>, Thomas Munro <thomas.munro@enterprisedb.com>, Rafia Sabih <rafia.sabih@enterprisedb.com>, pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2018-03-05T07:13:33Z
Lists: pgsql-hackers

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On Wed, Feb 7, 2018 at 2:00 PM, Ashutosh Bapat <
ashutosh.bapat@enterprisedb.com> wrote:

> On Fri, Dec 22, 2017 at 3:00 PM, Rajkumar Raghuwanshi
> <rajkumar.raghuwanshi@enterprisedb.com> wrote:
> > updated test patch attached.
>
Changed partition-wise statement to partitionwise.
Attached re-based patch.


> The patch looks good to me. I don't think we can reduce it further.
> But we need some tests to test PWJ with default partitions. Marking
> this as ready for committer.
>
Thanks Ashutosh.

Commits

  1. Add test for partitionwise join involving default partition.

  2. Rewrite the code that applies scan/join targets to paths.

  3. Fix code related to partitioning schemes for dropped columns.

  4. Copy information from the relcache instead of pointing to it.

  5. Basic partition-wise join functionality.

  6. Associate partitioning information with each RelOptInfo.

  7. Expand partitioned table RTEs level by level, without flattening.

  8. Set partitioned_rels appropriately when UNION ALL is used.

  9. Remove dedicated B-tree root-split record types.

  10. Assorted preparatory refactoring for partition-wise join.

  11. Teach adjust_appendrel_attrs(_multilevel) to do multiple translations.

  12. Avoid unnecessary single-child Append nodes.

  13. Revisit handling of UNION ALL subqueries with non-Var output columns.