On Tue, May 12, 2015 at 04:07:52PM +0800, Anil Menon wrote: > Thank you very much - looks like I will have to prefix all cols. You should anyway. Queries with unaliased columns make it impossible to analyze without in-depth knowledge of the database. Consider: select c1, c2, c3, c4, c5 from t1 join t2 using (c6) where c7 = 'a' and c8 < now() and c9; which fields belong to which tables? what indexes make sense? it's impossible to tell. if the column references were prefixed with table name/alias - it would become possible, and easy, even, to figure out what's going on. depesz -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
