sql server使用cte实现树结构递归查询

sql server使用cte实现树结构递归查询

 

use
xxx

go

Begin

--获得所有有权限的叶子节点

Declare
@Tempsubqrys
TABLE(

id
int,

Parentid
int,

planname
nvarchar(50),

Grd
int

);

 

with
subqry(id,Parentid,planname,Grd)
as (

select
id,Parentid,planname,Grd
from
T_Sch_Plan
where
id
= 2

union
all

select
t.id,t.Parentid,t.planname,t.Grd
from
T_Sch_Plan
t,subqry

where
t.parentid
=
subqry.id

)

insert
@Tempsubqrys(id,Parentid,planname,Grd)
(select
*
from
subqry
where
subqry.Grd
=4 and
subqry.id
not
in
(select
Planid
from
T_Sch_Plan_User
where
Fesid=1));

select
*
from
@Tempsubqrys;

end