Oracle数据 行转列

记录一段行转列SQL代码：

select cs.standard_id,cs.area_code,cs.exu_dept,
regexp_substr(exu_dept, '[^,]+', 1, level) as dept_id
     from ca_stand_exu_dept  cs
  connect by
    id = prior id
     and instr(exu_dept||',', ',', 1, level) > 0
    and prior dbms_random.value is not null;