ORACLE将用逗号隔开的某一条数据，转化为多条

Select a.*,
       regexp_substr(POST_USEE_DEPT, '[^,]+', 1, level) POST_USEE_DEPT_FEN    
  from SM_POST a
connect by level <= regexp_count(POST_USEE_DEPT, ',') + 1
       and SM_POST_ID = prior SM_POST_ID
       and prior dbms_random.value is not null;