Is there any way to disable the guessing of missing columns in a group-by (the feature added in 9.1)? I haven't found any option but I might not be searching for the right thing. http://wiki.postgresql.org/wiki/What%27s_new_in_PostgreSQL_9.1#SQL_and_PL.2FPgSQL_features -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general