CREATE TABLE gueststarlinkepisode (
  idActor    integer,
  idEpisode  integer,
  strRole    text,
  iOrder     integer
);

CREATE UNIQUE INDEX ix_gueststarlinkepisode_1
  ON gueststarlinkepisode
  (idActor, idEpisode);

CREATE UNIQUE INDEX ix_gueststarlinkepisode_2
  ON gueststarlinkepisode
  (idEpisode, idActor);