Previously Postgres95 wouldn't accept 'order by' clauses with fields
referred to as '<table>.<field>', e.g.:

        select t1.field1, t2.field2 from table1 t1, table2 t2
                order by t2.field2;

This syntax is required by the ODBC SQL spec.

Submitted by: Dan McGuirk <mcguirk@indirect.com>