pg.ddx.io  pgsql-hackers@postgresql.org mailing list archive  

help / color / mirror / Atom feed
From: Jeff Davis <pgsql@j-davis.com>
To: Tomas Vondra <tomas.vondra@2ndquadrant.com>
To: Melanie Plageman <melanieplageman@gmail.com>
Cc: Thomas Munro <thomas.munro@gmail.com>
Cc: pgsql-hackers <pgsql-hackers@postgresql.org>
Cc: HeikkiLinnakangas <hlinnaka@iki.fi>
Subject: Re: Trouble with hashagg spill I/O pattern and costing
Date: Thu, 28 May 2020 18:14:55 -0700
Message-ID: <0fb3456095d469cc20a9ee7e76edfe9237dae24f.camel@j-davis.com> (raw)
In-Reply-To: <20200528185750.aamptuqdzrggqi5c@development>
References: <20200525121722.6wzcelweefyuwg54@development>
	<2df2e0728d48f498b9d6954b5f9080a34535c385.camel@j-davis.com>
	<20200525225909.aifxjm53hw4xyzxd@development>
	<CA+hUKG+q3Ma+sTKn2316Ofof6u21hh0cGJHcJ-fAnLxw=LXevw@mail.gmail.com>
	<20200526141524.ohtvrp23vxosgivl@development>
	<e913544f6c236d37e8b0597cabd086570b5806f2.camel@j-davis.com>
	<20200526191511.d7pwz4awrvdm4p6j@development>
	<0589f869969de2f3e9713689159c7c4fbe1fcfa5.camel@j-davis.com>
	<CAAKRu_YNGQ-zw9rpXGtYhURMqdPk+HnMa+Wj-tnNx9cwENgDxg@mail.gmail.com>
	<20200527090704.onkjogxeg34ib5cn@development>
	<20200528185750.aamptuqdzrggqi5c@development>

On Thu, 2020-05-28 at 20:57 +0200, Tomas Vondra wrote:
> Attached is a patch adding CP_SMALL_TLIST to create_agg_plan and
> create_groupingsets_plan.

Looks good, except one question:

Why would aggstrategy ever be MIXED when in create_agg_path? Wouldn't
that only happen in create_groupingsets_path?

Regards,
	Jeff Davis







view thread (41+ messages)  latest in thread

Message-ID: <0fb3456095d469cc20a9ee7e76edfe9237dae24f.camel@j-davis.com>
Permalink:  ../0fb3456095d469cc20a9ee7e76edfe9237dae24f.camel@j-davis.com/
Also on:    postgresql.org/message-id/0fb3456095d469cc20a9ee7e76edfe9237dae24f.camel@j-davis.com

 · 

reply
Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Reply to all the recipients using the --to and --cc options:
  reply via email

  To: pgsql-hackers@postgresql.org
  Cc: pgsql@j-davis.com, tomas.vondra@2ndquadrant.com, melanieplageman@gmail.com, thomas.munro@gmail.com, hlinnaka@iki.fi
  Subject: Re: Trouble with hashagg spill I/O pattern and costing
  In-Reply-To: <0fb3456095d469cc20a9ee7e76edfe9237dae24f.camel@j-davis.com>

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox