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SELECT B.EMPLID   , B.INSTITUTION   , B.AID_YEAR   , B.SSN   , B.BIRTHDATE   , B.IWD_STD_LAST_NAME   , B.IWD_STD_FIRST_NM02   , B.IWD_STU_MI   , B.CITIZENSHIP_STATUS   , A.ISIR_TXN_NBR   FROM PS_ISIR_CONTROL A   , PS_ISIR_STUDENT B   WHERE A.EFC_STATUS = 'O'  AND A.EFFDT = (   SELECT MAX(A2.EFFDT)   FROM PS_ISIR_CONTROL A2   WHERE A.EMPLID = A2.EMPLID   AND A.INSTITUTION = A2.INSTITUTION   AND A.AID_YEAR = A2.AID_YEAR)   AND A.EFFSEQ = (   SELECT MAX(A3.EFFSEQ)   FROM PS_ISIR_CONTROL A3   WHERE A.EMPLID = A3.EMPLID   AND A.INSTITUTION = A3.INSTITUTION   AND A.AID_YEAR = A3.AID_YEAR   AND A.EFFDT =A3.EFFDT )   AND A.ISIR_TXN_NBR = (   SELECT MAX(A4.ISIR_TXN_NBR)   FROM PS_ISIR_CONTROL A4   WHERE A.EMPLID = A4.EMPLID   AND A.INSTITUTION = A4.INSTITUTION   AND A.AID_YEAR = A4.AID_YEAR   AND A.EFFDT =A4.EFFDT )   AND A.EMPLID = B.EMPLID   AND A.INSTITUTION = B.INSTITUTION   AND A.AID_YEAR = B.AID_YEAR   AND A.EFFDT = B.EFFDT   AND A.EFFSEQ= B.EFFSEQ
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