关于Tree的操作

--递归删除父节点及所有子节点

create table tb(Id int, ParentId int, Name varchar(5))

insert into tb select 1, 0, 'a1'

union all select 2,2, 'a2'

union all select 14, 1, 'b11'

union all select 15, 1, 'b12'

union all select 16, 14, 'c13'

union all select 17, 14, 'c14'

union all select 104,17,'d15'

go

WITH temptab(id, parentid, name) AS

(    SELECT root.id, root.parentid, root.name

FROM tb root

WHERE id=1

UNION ALL

SELECT sub.id, sub.parentid, sub.name

FROM tb sub, temptab super

WHERE sub.parentid = super.id

)

delete from tb where id in(

select id from temptab

)

select * from tb

go

drop table tb