| From: | Alexander Korotkov <aekorotkov(at)gmail(dot)com> |
|---|---|
| To: | Pavel Borisov <pashkin(dot)elfe(at)gmail(dot)com> |
| Cc: | Andrei Lepikhov <lepihov(at)gmail(dot)com>, Bruce Momjian <bruce(at)momjian(dot)us>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Missing docs for new enable_group_by_reordering GUC |
| Date: | 2024-06-19 01:27:31 |
| Message-ID: | CAPpHfdtTggaWkyh3d_4-WHruXSBA1=5S1VhpGExtLC0jfTmeEw@mail.gmail.com |
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On Tue, Jun 18, 2024 at 4:14 PM Pavel Borisov <pashkin(dot)elfe(at)gmail(dot)com> wrote:
>> Controls if the query planner will produce a plan which will provide <literal>GROUP BY</literal> keys presorted in the order of keys of a child node of the plan, such as an index scan. When disabled, the query planner will produce a plan with <literal>GROUP BY</literal> keys only reordered to match
>> the <literal>ORDER BY</literal> clause, if any. When enabled, the planner will try to produce a more efficient plan. The default value is on.
> A correction of myself: presorted -> sorted, reordered ->sorted
Thank you for your review. I think all of this make sense. Please,
check the revised patch attached.
------
Regards,
Alexander Korotkov
Supabase
| Attachment | Content-Type | Size |
|---|---|---|
| v3-0001-Add-doc-entry-for-the-new-GUC-paramenter-enable_g.patch | application/octet-stream | 2.1 KB |
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