Hi,
I have the following table create table product(cod serial, user_cod bigint, constraint product_fk Foreign Key(user_cod) references user(cod), constraint product_pk Primary Key(cod, user_cod)); What i want to happend is that: user_cod cod 1 1 1 2 1 3 2 1 3 1 3 2 Can serial do that? If not, what can i do to make this happen? Thanks a lot