Stefan Arentz <[EMAIL PROTECTED]> schrieb: > I need to get statistics from a bunch of tables. Simply the number of > records in them. > > The query plan looks like this: > > => explain select count(id) from stuff; > QUERY PLAN > ------------------------------------------------------------------- > Aggregate (cost=1629.69..1629.70 rows=1 width=8) > -> Seq Scan on stuff (cost=0.00..1517.75 rows=44775 width=8) > > The sequential scan kind of worries me. Is there a better/faster way to do > this?
Yes. A "select count(*) from foo;" enforces a seq. scan. Solutions for this are discussed here: http://www.varlena.com/GeneralBits/120.php Andreas -- Really, I'm not out to destroy Microsoft. That will just be a completely unintentional side effect. (Linus Torvalds) "If I was god, I would recompile penguin with --enable-fly." (unknow) Kaufbach, Saxony, Germany, Europe. N 51.05082°, E 13.56889° ---------------------------(end of broadcast)--------------------------- TIP 7: You can help support the PostgreSQL project by donating at http://www.postgresql.org/about/donate
