Agreed. Maybe something like this instead:

    SELECT f.title, f.did, d.name, f.date_prod, f.kind
      FROM films f
      JOIN distributors d ON FOREIGN f.films_did_fkey

and

    SELECT f.title, f.did, d.name, f.date_prod, f.kind
      FROM distributors d
      JOIN films f ON FOREIGN films_did_fkey