There's quite few articles about it on depesz.com. And since I started to blog recently about my own skirmishes/encounters with postgresql too - I'll probably write something about it. So far, personally - I used WITH() for PI calculations, as an example. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general