Dieter Komendera <dieter@xxxxxxxxxxxxx> writes: > Because I didn't find any documentation or references on setting statistic targets on indices, I just gave it a shot: > ALTER TABLE index_games_participants ALTER COLUMN "array" SET STATISTICS 1000; This works, and will help if the planner can make use of statistics on the expression the index is indexing. The reason it's not documented is that it's not considered supported (yet), primarily because pg_dump won't dump such a setting. And the reason for that is mainly that the column names of an index aren't guaranteed stable across PG versions. But as long as you're willing to remember to restore the setting manually, it's a reasonable thing to do if it helps your query plans. regards, tom lane -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
