SQL SERVER 中遞迴 層次顯示資料資訊

create table a
(
fid int,
id int,
name varchar(50)
)
insert into a
select null,1,'浙江'
union all
select 1,2,'杭州'
union all
select 1,3,'溫州'
union all
select 1,4,'紹興'
union all
select 2,5,'下沙'
union all
select 4,6,'上虞'

 

with tb (id,n1,n2,level)
as (
select id,name,name,level=1
from a
where fid is null
union all
select a.id,

cast(tb.n1+a.name as varchar(50)),

cast(replicate('---',level*2)+a.name as varchar(50)),

level+1

from a,tb

where tb.id=a.fid
)
select * from tb order by n1

 

 

結果：