Are there documents specifying the query optimisations in Postgresql like the SQLite (http://www.sqlite.org/optoverview.html)? >From the web, I can say, there are index and join optimisation, but are there anything others like Subquery flattening? thanks. Bentley. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general