Re: PostgreSQL: Question about rules

create rule "child_with_parent_explicit_insert" as
        on insert to child_with_parent_explicit do instead (
                insert into parent(id, foo) values(COALESCE
(new.id ,NEXTVAL('parent_id_seq')), new.foo);
                insert into child(id, bar) values(COALESCE
(new.id,CURRVAL('parent_id_seq')), new.bar);
        );


I'm not sure if this is what you're looking for, but does this help?

Regards,
        Jeff Davis