Find epsiodes dupes in Kodi17

SELECT y.idShow,y.c12,y.c13,
 y.strFileName
FROM episode_view Y
INNER JOIN (
SELECT
 c12,c13,idShow, COUNT(*) AS CountOf
FROM episode_view
GROUP BY idShow,c12,c13
HAVING COUNT(*)>1
) dt ON y.c12=dt.c12 AND y.c13=dt.c13 AND y.idShow=dt.idShow;