No unique constraint matching given keys for referenced table

Question

I have a date_dimension table definition:

CREATE TABLE date_dimension
(
  id integer primary key,
  date text,
  year double precision,
  year         


        

Answer 1

Don't you just want to create two separate foreign key references to the date dimension as follows:

create table fact ( 
    id serial primary key,
    contract integer,
    component integer,
    evaluation_date integer,
    effective_date integer,
    foreign key (evaluation_date) references date_dimension(id),
    foreign key (effective_date) references date_dimension(id)
);