有这样一组数据:
fseq fjobid fcseq
999159 XAMK0711-002库尔勒-P null
999334 XAMK0711-002库尔勒-P1 999159
999335 XAMK0711-002库尔勒-P2 999334
999336 XAMK0711-002库尔勒-P3 999335
我想用嵌套自定义函数做,当我输入参数999336的时候返回最高父节点fseq:999159,就是去找最高父节点,如何输入的是父节点本身那就返回自己的fseq,请高手帮忙,谢了!
fseq fjobid fcseq
999159 XAMK0711-002库尔勒-P null
999334 XAMK0711-002库尔勒-P1 999159
999335 XAMK0711-002库尔勒-P2 999334
999336 XAMK0711-002库尔勒-P3 999335
我想用嵌套自定义函数做,当我输入参数999336的时候返回最高父节点fseq:999159,就是去找最高父节点,如何输入的是父节点本身那就返回自己的fseq,请高手帮忙,谢了!
/*
标题:查询指定节点的最上级父节点的函数
作者:爱新觉罗·毓华(十八年风雨,守得冰山雪莲花开)
时间:2009-01-21
地点:新疆乌鲁木齐
*/create table tb(id varchar(3) , pid varchar(3) , name varchar(10))
insert into tb values('001' , null , '广东省')
insert into tb values('002' , '001' , '广州市')
insert into tb values('003' , '001' , '深圳市')
insert into tb values('004' , '002' , '天河区')
insert into tb values('005' , '003' , '罗湖区')
insert into tb values('006' , '003' , '福田区')
insert into tb values('007' , '003' , '宝安区')
insert into tb values('008' , '007' , '西乡镇')
insert into tb values('009' , '007' , '龙华镇')
insert into tb values('010' , '007' , '松岗镇')
go--查询指定节点最上级父节点的函数
create function f_pid(@id varchar(3)) returns @t_level table(id varchar(3))
as
begin
insert into @t_level select @id
select @id = pid from tb where id = @id and pid is not null
while @@ROWCOUNT > 0
begin
delete from @t_level
insert into @t_level select @id select @id = pid from tb where id = @id and pid is not null
end
return
end
go--调用函数查询005(罗湖区)的最上级父节点
select a.* from tb a , f_pid('005') b where a.id = b.id
/*
id pid name
---- ---- ----------
001 NULL 广东省(所影响的行数为 1 行)
*/--调用函数查询002(广州市)的最上级父节点
select a.* from tb a , f_pid('002') b where a.id = b.id
/*
id pid name
---- ---- ----------
001 NULL 广东省(所影响的行数为 1 行)
*/--调用函数查询001(广东省)的最上级父节点
select a.* from tb a , f_pid('001') b where a.id = b.id
/*
id pid name
---- ---- ----------
001 NULL 广东省(所影响的行数为 1 行)
*/drop table tb
drop function f_pid
[/code]
-->Author:wufeng4552
-->Date :2009-09-30 08:52:38
set nocount on
if object_id('tb','U')is not null drop table tb
go
create table tb(ID int, ParentID int)
insert into tb select 1,0
insert into tb select 2,1
insert into tb select 3,1
insert into tb select 4,2
insert into tb select 5,3
insert into tb select 6,5
insert into tb select 7,6
-->Title:查找指定節點下的子結點
if object_id('Uf_GetChildID')is not null drop function Uf_GetChildID
go
create function Uf_GetChildID(@ParentID int)
returns @t table(ID int)
as
begin
insert @t select ID from tb where ParentID=@ParentID
while @@rowcount<>0
begin
insert @t select a.ID from tb a inner join @t b
on a.ParentID=b.id and
not exists(select 1 from @t where id=a.id)
end
return
end
go
select * from dbo.Uf_GetChildID(5)
/*
ID
-----------
6
7
*/
-->Title:查找指定節點的所有父結點
if object_id('Uf_GetParentID')is not null drop function Uf_GetParentID
go
create function Uf_GetParentID(@ID int)
returns @t table(ParentID int)
as
begin
insert @t select ParentID from tb where ID=@ID
while @@rowcount!=0
begin
insert @t select a.ParentID from tb a inner join @t b
on a.id=b.ParentID and
not exists(select 1 from @t where ParentID=a.ParentID)
end
return
end
go
select * from dbo.Uf_GetParentID(2)
/*
ParentID
-----------
1
0
*/
create table tb(id varchar(10), name varchar(50), pid varchar(10))
insert into tb values('999159' , 'XAMK0711-002库尔勒-P ', null )
insert into tb values('999334' , 'XAMK0711-002库尔勒-P1', '999159')
insert into tb values('999335' , 'XAMK0711-002库尔勒-P2', '999334')
insert into tb values('999336' , 'XAMK0711-002库尔勒-P3', '999335')
go--查询指定节点最上级父节点的函数
create function f_pid(@id varchar(10)) returns @t_level table(id varchar(10))
as
begin
insert into @t_level select @id
select @id = pid from tb where id = @id and pid is not null
while @@ROWCOUNT > 0
begin
delete from @t_level
insert into @t_level select @id select @id = pid from tb where id = @id and pid is not null
end
return
end
go--'999336'
select a.* from tb a , f_pid('999336') b where a.id = b.id drop table tb
drop function f_pid/*
id name pid
---------- -------------------------------------------------- ----------
999159 XAMK0711-002库尔勒-P NULL(所影响的行数为 1 行)
*/