Take a look at EXPLAIN and EXPLAIN ANALYSE:
http://www.postgresql.org/docs/view.php?version=7.3&idoc=1&file=sql-explain.html
On Wed, 2003-06-18 at 16:23, Lucas Lain wrote:
> how can i compare two querys' eficiency???
>
> TIA,
--
Rod Taylor <rbt(at)rbt(dot)ca>
PGP Key: http://www.rbt.ca/rbtpub.asc