Postgres Pro
Downloads
Home   >   mailing lists

Re: Costing bug in hash join logic for semi joins - Mailing list pgsql-hackers

From David Rowley
Subject Re: Costing bug in hash join logic for semi joins
Date
Msg-id CAKJS1f9oJ-hhgw+P4sRmoPVWAZ4KNAjH1eJT6VP393Ar5x04Ng@mail.gmail.com
Whole thread Raw
In response to Re: Costing bug in hash join logic for semi joins  (David Rowley <david.rowley@2ndquadrant.com>)
List pgsql-hackers
Tree view 
On 10 July 2018 at 22:21, David Rowley <david.rowley@2ndquadrant.com> wrote:
> I've done that in the attached.  Also on reading the comment above, it
> looks slightly incorrect. To me, it looks like it's applying a
> twentieth of the cost and not a tenth as the comment claims. I
> couldn't resist updating that too.

I've added this patch to the September commit fest:

https://commitfest.postgresql.org/19/1720/

-- 
 David Rowley                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services

pgsql-hackers by date:

Previous
From: David Pacheco
Date:
Subject: Re: patch to allow disable of WAL recycling
Next
From: Nico Williams
Date:
Subject: Re: [HACKERS] [PATCH] WIP Add ALWAYS DEFERRED option for constraints