Horton

Incorrect debug info printed in generate_partition_wise_join_paths

Etsuro Fujita <fujita.etsuro@lab.ntt.co.jp>

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From: Etsuro Fujita <fujita.etsuro@lab.ntt.co.jp>
To: Pg Hackers <pgsql-hackers@postgresql.org>
Date: 2017-12-08T09:52:38Z
Lists: pgsql-hackers

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generate_partition_wise_join_paths prints debug info, if
OPTIMIZER_DEBUG, using debug_print_rel at the end of each iteration for
collecting non-dummy child-joins, but I noticed that we pass to that
function the parent's RelOptInfo, not such a child-join's RelOptInfo.  I
don't think it's intentional, so here is a patch for fixing that.

Best regards,
Etsuro Fujita

Commits

  1. Remove bug from OPTIMIZER_DEBUG code for partition-wise join.