| From: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | David Rowley <david(dot)rowley(at)2ndquadrant(dot)com>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Performance improvement for joins where outer side is unique |
| Date: | 2016-04-07 19:02:14 |
| Message-ID: | 20160407190214.GA569221@alvherre.pgsql |
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| Lists: | pgsql-hackers |
Tom Lane wrote:
> Anyway, while refactoring the make_join_rel/add_paths_to_joinrel division
> of labor wouldn't be such a big deal in itself, I don't want to commit a
> change to JoinType only to undo it later; that would be too much churn.
> So I think we need to resolve this question before we can move forward.
> I don't know if you have time to look at this now --- my clock says it's
> already Friday morning in New Zealand.
FWIW the feature freeze rules state that it is allowed for a committer
to request an extension to the feature freeze date for individual
patches:
https://www.postgresql.org/message-id/CA%2BTgmoY56w5FOzeEo%2Bi48qehL%2BBsVTwy-Q1M0xjUhUCwgGW7-Q%40mail.gmail.com
It seems to me that the restrictions laid out there are well met for
this patch, if you only need a couple of additional days for this patch
to get in.
--
Álvaro Herrera http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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