diff options
| -rw-r--r-- | doc/src/sgml/ref/vacuumdb.sgml | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/doc/src/sgml/ref/vacuumdb.sgml b/doc/src/sgml/ref/vacuumdb.sgml index b0680a61814..c7d9dca17b8 100644 --- a/doc/src/sgml/ref/vacuumdb.sgml +++ b/doc/src/sgml/ref/vacuumdb.sgml @@ -282,9 +282,11 @@ PostgreSQL documentation <listitem> <para> Only analyze relations that are missing statistics for a column, index - expression, or extended statistics object. This option prevents - <application>vacuumdb</application> from deleting existing statistics - so that the query optimizer's choices do not become transiently worse. + expression, or extended statistics object. When used with + <option>--analyze-in-stages</option>, this option prevents + <application>vacuumdb</application> from temporarily replacing existing + statistics with ones generated with lower statistics targets, thus + avoiding transiently worse query optimizer choices. </para> <para> This option can only be used in conjunction with |