From e64e4b3d206d76ed8bbd5345798e0d35958759bd Mon Sep 17 00:00:00 2001 From: Justin Pryzby Date: Fri, 23 Apr 2021 09:15:40 -0500 Subject: [PATCH 3/3] Mention statistics objects Previously mentioned at 20210423025012.GI7256@telsasoft.com --- doc/src/sgml/maintenance.sgml | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/doc/src/sgml/maintenance.sgml b/doc/src/sgml/maintenance.sgml index ee6113926a..de7fd75e1c 100644 --- a/doc/src/sgml/maintenance.sgml +++ b/doc/src/sgml/maintenance.sgml @@ -330,7 +330,8 @@ Also, by default there is limited information available about - the selectivity of functions. However, if you create an expression + the selectivity of functions. However, if you create a statistics + object or an expression index that uses a function call, useful statistics will be gathered about the function, which can greatly improve query plans that use the expression index. -- 2.17.0