| From: | David Rowley <david(dot)rowley(at)2ndquadrant(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Bruce Momjian <bruce(at)momjian(dot)us> |
| Subject: | Re: release notes: tids & self-joins |
| Date: | 2019-06-13 20:53:05 |
| Message-ID: | CAKJS1f88y0a_=0tujXH7Fq-G15cWLe2dWqEm8F-WbsPRKP3RGg@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Fri, 14 Jun 2019 at 05:22, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>
> Robert Haas <robertmhaas(at)gmail(dot)com> writes:
> > So I think that this should probably be changed to say something like
> > "Improve optimization of self-joins on ctid columns" or "Improve
> > optimization of joins involving columns of type tid."
>
> The latter seems fine to me.
The latter seems a bit inaccurate to me given the fact that a column
with the type tid could exist elsewhere in the table. Perhaps
"columns of type tid" can be swapped with "a table's ctid column".
--
David Rowley http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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