| 
SELECT i.INSTITUTION   , l.LANGUAGE_CD   , i.EFFDT   , l.DESCR   FROM PS_SSR_GRADOP_INST i   , PS_INSTITUTION_TBL t   , PS_INSTITUTION_LNG l   WHERE t.INSTITUTION = i.INSTITUTION   AND t.EFFDT = (   SELECT MAX(t2.EFFDT)   FROM PS_INSTITUTION_TBL t2   WHERE t2.INSTITUTION = t.INSTITUTION   AND t2.EFFDT <= i.EFFDT)   AND t.EFF_STATUS = 'A'   AND l.INSTITUTION = t.INSTITUTION   AND l.EFFDT = t.EFFDT   UNION ALL   SELECT a.INSTITUTION   , z.LANGUAGE_CD   , a.EFFDT   , z.DESCR   FROM PS_SSR_GRADOP_PGM a   , PS_INSTITUTION_TBL x   , PS_INSTITUTION_LNG z   WHERE x.INSTITUTION = a.INSTITUTION   AND x.EFFDT = (   SELECT MAX(x2.EFFDT)   FROM PS_INSTITUTION_TBL x2   WHERE x2.INSTITUTION = x.INSTITUTION   AND x2.EFFDT <= a.EFFDT)   AND x.EFF_STATUS = 'A'   AND z.INSTITUTION = x.INSTITUTION   AND z.EFFDT = x.EFFDT  AND a.INSTITUTION NOT IN (  SELECT i2.INSTITUTION   FROM PS_SSR_GRADOP_INST i2   , PS_INSTITUTION_TBL t3   WHERE t3.INSTITUTION = i2.INSTITUTION   AND t3.EFFDT = (   SELECT MAX(t4.EFFDT)   FROM PS_INSTITUTION_TBL t4   WHERE t4.INSTITUTION = t3.INSTITUTION   AND t4.EFFDT <= i2.EFFDT)   AND t3.EFF_STATUS = 'A')
 |