Sql Server遞歸查詢（轉）

有以下數據表

 

 

假如咱們要查詢ID爲003的數據的全部子節點咱們可使用CTE 遞歸查詢完成...

 

if OBJECT_ID('tb','N') is not null
 drop table tb;


create table tb(id varchar(3) , pid varchar(3) , name varchar(10));
insert into tb values('001' , null , '廣東省');
insert into tb values('002' , '001' , '廣州市');
insert into tb values('003' , '001' , '深圳市') ;
insert into tb values('004' , '002' , '天河區') ;
insert into tb values('005' , '003' , '羅湖區');
insert into tb values('006' , '003' , '福田區') ;
insert into tb values('007' , '003' , '寶安區') ;
insert into tb values('008' , '007' , '西鄉鎮') ;
insert into tb values('009' , '007' , '龍華鎮');
insert into tb values('010' , '007' , '鬆崗鎮');

select * from tb;

 with cte as
 (
 select a.id,a.name,a.pid from tb a where id='003'
 union all
 select k.id,k.name,k.pid  from tb k inner join cte c on c.id = k.pid
 )select * from cte

查詢結果以下：
003 深圳市 001
005 羅湖區 003
006 福田區 003
007 寶安區 003
008 西鄉鎮 007
009 龍華鎮 007
010 鬆崗鎮 007

 

 

 

轉自：http://blog.csdn.net/myxx520/article/details/6922682