Re: BUG #15847: Running out of memory when planning full outer joins involving many partitions

Feike Steenbergen <feikesteenbergen@gmail.com>

From: Feike Steenbergen <feikesteenbergen@gmail.com>

To: Tom Lane <tgl@sss.pgh.pa.us>

Cc: pgsql-bugs@lists.postgresql.org

Date: 2019-06-14T08:26:35Z

Lists: pgsql-bugs

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Avoid combinatorial explosion in add_child_rel_equivalences().
- d25ea0127598 12.0 landed

On Thu, 13 Jun 2019 at 19:14, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> This patch fixes the
> described performance problem and still passes check-world.

Thanks! I can see drastic improvements in a 3-way join
and the 4-way join is now actually working.

Feike