SELECT A.SETID ,A.PRORATA_BASIS ,A.LANGUAGE_CD ,A.INSTANCE_NAME FROM PS_RE_PRTA_BAS_LG A WHERE A.EFFDT = ( SELECT MAX(B.EFFDT) FROM PS_RE_PRTA_BAS_LG B WHERE A.SETID = B.SETID AND A.PRORATA_BASIS = B.PRORATA_BASIS AND B.EFFDT <= %CurrentDateIn ) OR (A.EFFDT = ( SELECT MIN(C.EFFDT) FROM PS_RE_PRTA_BAS_LG C WHERE C.SETID = A.SETID AND C.PRORATA_BASIS = A.PRORATA_BASIS AND C.EFFDT > %CurrentDateIn) AND NOT EXISTS ( SELECT 1 FROM PS_RE_PRTA_BAS_LG D WHERE D.SETID = A.SETID AND D.PRORATA_BASIS = A.PRORATA_BASIS AND D.EFFDT = ( SELECT MAX(E.EFFDT) FROM PS_RE_PRTA_BAS_LG E WHERE D.SETID = E.SETID AND D.PRORATA_BASIS = E.PRORATA_BASIS AND E.EFFDT <= %CurrentDateIn )))
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