M Tarkeshwar Rao wrote: > We are upgrading our mediation product from postgres 8.1 to postgres 9.1 > > Can you please suggest some test cases or some issues which may hamper us? This is the first thing that comes to mind: http://petereisentraut.blogspot.co.at/2008/03/readding-implicit-casts-in-postgresql.html But you may encounter other incompatibilities. Read the release nots of all major releases between 8.2 and 9.1, but most of all, test your application well. Yours, Laurenz Albe -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general