I created one table so: CREATE TABLE clima ( city char(80), cprc int, ); And have other table so: CREATE TABLE city ( name char(80), other_thing int, ); But now I want the table clima receive name table city as foreign key. understand? Sorry my bad english. Em terça-feira, 18 de setembro de 2012 17h37min59s UTC-3, Guilherme Rodrigues escreveu: > Hello. I want to change one table already created. Where the comand? thank you. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general