Horton

Re: estimation problems for DISTINCT ON with FDW

Etsuro Fujita <etsuro.fujita@gmail.com>

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From: Etsuro Fujita <etsuro.fujita@gmail.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Jeff Janes <jeff.janes@gmail.com>, pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2020-07-03T11:55:44Z
Lists: pgsql-hackers 
On Fri, Jul 3, 2020 at 5:19 AM Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Concretely, I now propose the attached, which seems entirely
> safe to back-patch.

The patch looks good to me.  And +1 for back-patching.

Best regards,
Etsuro Fujita

Commits

  1. Clamp total-tuples estimates for foreign tables to ensure planner sanity.