Re: PostgreSQL 12: Feature Highlights

Bruce Momjian <bruce@momjian.us>

From: Bruce Momjian <bruce@momjian.us>
To: David Rowley <david.rowley@2ndquadrant.com>
Cc: Amit Langote <Langote_Amit_f8@lab.ntt.co.jp>, "Jonathan S. Katz" <jkatz@postgresql.org>, pgsql-advocacy@lists.postgresql.org
Date: 2019-05-18T13:20:31Z
Lists: pgsql-hackers
On Sat, May 18, 2019 at 11:34:34PM +1200, David Rowley wrote:
> On Sat, 18 May 2019 at 14:30, Bruce Momjian <bruce@momjian.us> wrote:
> > No one has suggested new wording, so I don't know what you are
> > complaining about.  In fact, the wording we have now is by Amit Langote.
> 
> https://www.postgresql.org/message-id/CAKJS1f8R6DC45bauzeGF-QMaQ90B_NFSJB9mvVOuhKVDkajehg@mail.gmail.com

The second item I added yesterday at the prompting of Amit:

	commit 05685897f0
	Author: Bruce Momjian <bruce@momjian.us>
	Date:   Fri May 17 11:31:49 2019 -0400
	
	    docs:  split out sort-skip partition item in PG 12 release notes
	
	    Discussion:
	https://postgr.es/m/0cf10a27-c6a0-de4a-cd20-ab7493ea7422@lab.ntt.co.jp

	> Avoid sorting when partitions are already being scanned in the
	> necessary order (David Rowley)

The first one needs to reference visible effects, so I would add:

	Consider additional optimizations for queries referencing
	partitioned tables that only affect a single partition

Does that work?

It seems you never got a reply to that email, perhaps because I thought
Amit's next email was covering the same issue.  I am sorry for that.

-- 
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

+ As you are, so once was I.  As I am, so you will be. +
+                      Ancient Roman grave inscription +



Commits

  1. doc: PG 12 relnotes, add mention of single-child optimization

  2. docs: split out sort-skip partition item in PG 12 release notes

  3. docs: update partition item in PG 12 release notes