Doc: mention that extended stats aren't used for joins
authorDavid Rowley <drowley@postgresql.org>
Thu, 22 Jun 2023 00:45:30 +0000 (12:45 +1200)
committerDavid Rowley <drowley@postgresql.org>
Thu, 22 Jun 2023 00:45:50 +0000 (12:45 +1200)
commitc2d35bb88eab99fd81198fa4caee004fb8997c73
tree1c771a0e4b24a7a8809b434b05b6a52da4aae98b
parent5f0762f14754597724c24cf6517fe4fe6412a6f9
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
doc/src/sgml/ref/create_statistics.sgml