这是在2002年给一个制衣厂做系统的时候写的，请大家多批评指正！

 create table Dept(
 DepartNO  varchar2(10),
   DepartName  varchar2(20),
 TopNo    varchar2(10));

insert into Dept values('001','董事会','0');
insert into Dept values('002','总裁办','001');
insert into Dept values('003','财务部','001');
insert into Dept values('004','市场部','002');
insert into Dept values('005','公关部','002');
insert into Dept values('006','销售部','002');
insert into Dept values('007','分销处','006');
insert into Dept values('008','业务拓展处','004');
insert into Dept values('009','销售科','007');

CREATE TABLE TempDept
(
 TempdeptNo    char(4), /*部门编号*/
 TempdeptName   varchar2(20), /*部门名称*/
  UpperTempdeptNo  char(4), /*上级部门编号*/
  UpperTempdeptName  varchar2(20), /*上级部门名称*/
 TempdeptLevel   number(4) /*部门所处的级别*/
);

select departname
from dept
connect by prior departno=topno
start with topno='0';

select a.departname top ,b.departname next
from dept a,dept b
where a.departno=b.topno;

select lpad(departno,level*2+length(departno),'')
from dept
start with topno='0'
connect by prior departno=topno;

select departno,departname,level ||''|| topno
from dept
start with topno='0'
connect by prior departno=topno;

select lpad(departno,level*2+length(departno),' ')
from dept
start with topno='0'
connect by prior departno=topno;

select lpad(departno,level*3,' ')
 

 from dept
start with topno='0'
connect by prior departno=topno;

create or replace function GetLevel(TempNo varchar2)
return varchar2
IS
 Result  varchar2(20);
 cursor CurLevel(curTempNo varchar2)
 is
 select departNo
 from dept
 connect by prior departNo = TopNo