On Wed, Oct 26, 2005 at 08:05:21AM -0400, Merlin Moncure wrote:
> select count(*) from fotos f where not exists (select archivo from archivos a where a.archivo = f.archivo)

This was an optimization before 7.4, but probably isn't anymore.

/* Steinar */
--
Homepage: http://www.sesse.net/

---------------------------(end of broadcast)---------------------------
TIP 4: Have you searched our list archives?

http://archives.postgresql.org