From: David Rowley <drowley@postgresql.org>
To: pgsql-committers@lists.postgresql.org
Subject: pgsql: Doc: mention that extended stats aren't used for joins
Date: Thu, 22 Jun 2023 00:47:33 +0000
Message-ID: <E1qC8U1-002ytC-0q@gemulon.postgresql.org> (raw)
Doc: mention that extended stats aren't used for joins
Statistics defined by the CREATE STATISTICS command are only used to
assist with the selectivity estimations of base relations, never for
joins. Here we mention this fact in the notes section of the CREATE
STATISTICS command.
Discussion: https://postgr.es/m/CAApHDvrMuVgDOrmg_EtFDZ=AOovq6EsJNnHH1ddyZ8EqL4yzMw@mail.gmail.com
Backpatch-through: 11
Branch
------
REL_15_STABLE
Details
-------
https://git.postgresql.org/pg/commitdiff/4e17cb00dc2b57f0ac1bbe3c1fd587e982b33307
Modified Files
--------------
doc/src/sgml/ref/create_statistics.sgml | 6 ++++++
1 file changed, 6 insertions(+)
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-committers@postgresql.org
Cc: drowley@postgresql.org, pgsql-committers@lists.postgresql.org
Subject: Re: pgsql: Doc: mention that extended stats aren't used for joins
In-Reply-To: <E1qC8U1-002ytC-0q@gemulon.postgresql.org>
* 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