On 1/31/12 3:50 AM, Marc Mamin wrote:
> Hello,
>
> I have a weird table, upon with the queries are much faster when no
> statics were collected.
>
> Is there a way to delete statistics information for a table ?
> I've tried ALTER.. set STATISTICS 0 and then run ANALYZE, but it seems
> that old statistics are kept this way.
> Can I delete entries directly in pg_statistic ?
> (Postgresql 9.1)
You can, but it won't do any good; autovaccum will replace them.
It would be better to fix the actual query plan issue. If you can, post
the query plans with and without statistics (EXPLAIN ANALYZE, please) here.
--
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com