with t as ( select '50mg' txt from dual union all select '50kg_50mg' from dual union all select '50' from dual union all select 'mg50' from dual union all select 'mg good' from dual union all select '50mg50' from dual union all select '50m' from dual union all select 'mg' from dual union all select '1mg' from dual union all select '50g' from dual ) select * from t where regexp_like(txt, '^[0-9]+mg$')
감사합니다