EXISTS (select 1 from t_PUR_POOrder t inner join t_PUR_POOrderentry t1 on t.fid=t1.fid inner join T_SUB_REQORDERENTRY_A t2 on t1.fentryid=t2.FPURORDERENTRYID where t.fdocumentstatus='C' and FSUBREQENTRYID=t2.fentryid )