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SELECT DISTINCT t.emplid   , t.institution   , i.descr   FROM PS_SSR_APTSY_TXN_V t   ,ps_institution_tbl i   WHERE i.institution = t.institution   AND i.effdt = (   SELECT MAX(i2.effdt)   FROM ps_institution_tbl i2   WHERE i2.institution = i.institution   AND i2.effdt <= %CurrentDateIn)   AND i.eff_status = 'A'  AND NOT EXISTS (   SELECT 'X'   FROM ps_ssr_apt_enrl b   WHERE t.emplid = b.emplid   AND t.institution = b.institution   AND t.ssr_apt_instance = b.ssr_apt_instance   AND t.acad_career = b.src_career   AND t.strm = b.src_term   AND t.class_nbr = b.class_nbr )
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