Re: Avoid extra Sort nodes between WindowAggs when sorting can be reused

From: Daniel Gustafsson <daniel(at)yesql(dot)se>
To: Andrew Gierth <andrew(at)tao11(dot)riddles(dot)org(dot)uk>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>, Alexander Kuzmenkov <a(dot)kuzmenkov(at)postgrespro(dot)ru>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Avoid extra Sort nodes between WindowAggs when sorting can be reused
Date: 2018-09-14 11:34:22
Message-ID: 008A85EB-70E1-476E-BCD4-142D85BDD98B@yesql.se
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> On 13 Sep 2018, at 19:50, Andrew Gierth <andrew(at)tao11(dot)riddles(dot)org(dot)uk> wrote:
>
> Here's what I have queued up to push.

LGTM, thanks!

> + * framing clauses differ), then all peer rows must be presented in the
> + * same order in all of them. If we allowed multiple sort nodes for such

Should probably be capitalized as "Sort nodes” to match the rest of the comment.

cheers ./daniel

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