递归
CREATE TABLE tb (ID char(3),PID char(3),Name nvarchar(10))
insert tb
select 1,0,'系统' union all
select 2,1,'管理系统' union all
select 3,2,'财务' union all
select 4,2,'分销' union all
select 5,1,'组织' union all
select 6,5,'公司'
go
CREATE FUNCTION dbo.f_Sort(@ID char(3)=0,@lv int=1,@sort int=1)
RETURNS @t_Level TABLE(ID char(3),lv int,sort int)
AS
BEGIN
DECLARE tb CURSOR LOCAL
FOR
SELECT ID FROM tb
WHERE PID=@ID
OPEN TB
FETCH tb INTO @ID
WHILE @@FETCH_STATUS=0
BEGIN
INSERT @t_Level VALUES(@ID,@lv,@sort)
SET @sort=@sort+1
IF @@NESTLEVEL<32 --如果递归层数未超过32层(递归最大允许32层)
BEGIN
--递归查找当前节点的子节点
INSERT @t_Level SELECT * FROM f_Sort(@ID,@lv+1,@sort)
SET @sort=@sort+@@ROWCOUNT --排序号加上子节点个数
--SET @lv=@lv+1
END
FETCH tb INTO @ID
END
RETURN
END
GO
select SPACE(b.LV*2)+'|--'+A.Name from TB A, dbo.f_Sort(0,1,1) B WHERE A.ID=B.ID ORDER BY sort
drop table tb
drop FUNCTION f_Sort
--结果
|--系统
|--管理系统
|--财务
|--分销
|--组织
|--公司
--建立函数实现
create TABLE ta(ID char(3),PID char(3),Name nvarchar(10))
insert ta
select 1,0 ,'系统' union all
select 2,1 ,'管理系统' union all
select 3,2 ,'财务' union all
select 4,2 ,'分销' union all
select 5,1 ,'组织' union all
select 6,5 ,'公司'
go
create function test_f()
returns @t_Level TABLE(ID char(3),Level int,Name varchar(8000))
as
begin
DECLARE @Level int
SET @Level=0
INSERT @t_Level SELECT ID,@Level,ID
FROM ta t
WHERE not exists(select 1 from ta where id=t.pid)
WHILE @@ROWCOUNT>0
BEGIN
SET @Level=@Level+1
INSERT @t_Level SELECT a.ID,@Level,b.Name+a.ID
FROM ta a,@t_Level b
WHERE a.PID=b.ID
AND b.Level=@Level-1
END
return
end
go
--显示结果
SELECT SPACE(b.Level*2)+a.Name as [显示效果]
FROM ta a,
dbo.test_f() b
WHERE a.ID=b.ID
ORDER BY b.Name
DECLARE @t TABLE(ID char(3),PID char(3),Name nvarchar(10))
insert @t
select 1,0 ,'系统' union all
select 2,1 ,'管理系统' union all
select 3,2 ,'财务' union all
select 4,2 ,'分销' union all
select 5,1 ,'组织' union all
select 6,5 ,'公司'
DECLARE @t_Level TABLE(ID char(3),Level int,Name varchar(8000))
DECLARE @Level int
SET @Level=0
INSERT @t_Level SELECT ID,@Level,ID
FROM @t t
WHERE not exists(select 1 from @t where id=t.pid)
WHILE @@ROWCOUNT>0
BEGIN
SET @Level=@Level+1
INSERT @t_Level SELECT a.ID,@Level,b.Name+a.ID
FROM @t a,@t_Level b
WHERE a.PID=b.ID
AND b.Level=@Level-1
END
--显示结果
SELECT SPACE(b.Level*2)+a.Name as [显示效果]
FROM @t a,
@t_Level b
WHERE a.ID=b.ID
ORDER BY b.Name
insert @t
select 1,0 ,'系统' union all
select 2,1 ,'管理系统' union all
select 3,2 ,'财务' union all
select 4,2 ,'分销' union all
select 5,1 ,'组织' union all
select 6,5 ,'公司' union all
select 7,3 ,'分销' union all
select 8,3 ,'组织' union all
select 9,4 ,'公司'
--深度排序显示处理
--生成每个节点的编码累计(相同当单编号法的编码)
DECLARE @t_Level TABLE(ID char(3),Level int,Sort varchar(8000))
DECLARE @Level int
SET @Level=0
INSERT @t_Level SELECT ID,@Level,ID
FROM @t
WHERE PID =0
WHILE @@ROWCOUNT>0
BEGIN
SET @Level=@Level+1
INSERT @t_Level SELECT a.ID,@Level,b.Sort+a.ID
FROM @t a,@t_Level b
WHERE a.PID=b.ID
AND b.Level=@Level-1
END
--显示结果
SELECT SPACE(b.Level*6)+'|--'+a.Name
FROM @t a,@t_Level b
WHERE a.ID=b.ID
ORDER BY b.Sort
create table t1(menuid int ,menuname varchar(50),parentmenu int )
insert t1
select 1 ,'系统',0 union all
select 2 ,'管理系统',1 union all
select 3 ,'财务',2 union all
select 4 ,'分销',2 union all
select 5 ,'组织',1 union all
select 6 ,'公司',5
SELECT SPACE(parentmenu*10)+'|--'+menuname
FROM t1 a
邹老大的代码
--测试数据
DECLARE @t TABLE(ID char(3),PID char(3),Name nvarchar(10))
INSERT @t SELECT '001',NULL ,'山东省'
UNION ALL SELECT '002','001','烟台市'
UNION ALL SELECT '004','002','招远市'
UNION ALL SELECT '003','001','青岛市'
UNION ALL SELECT '005',NULL ,'四会市'
UNION ALL SELECT '006','005','清远市'
UNION ALL SELECT '007','006','小分市'
--深度排序显示处理
--生成每个节点的编码累计(相同当单编号法的编码)
DECLARE @t_Level TABLE(ID char(3),Level int,Sort varchar(8000))
DECLARE @Level int
SET @Level=0
INSERT @t_Level SELECT ID,@Level,ID
FROM @t
WHERE PID IS NULL
WHILE @@ROWCOUNT>0
BEGIN
SET @Level=@Level+1
INSERT @t_Level SELECT a.ID,@Level,b.Sort+a.ID
FROM @t a,@t_Level b
WHERE a.PID=b.ID
AND b.Level=@Level-1
END
--显示结果
SELECT SPACE(b.Level*2)+'|--'+a.Name
FROM @t a,@t_Level b
WHERE a.ID=b.ID
ORDER BY b.Sort
/*--结果
|--山东省
|--烟台市
|--招远市
|--青岛市
|--四会市
|--清远市
|--小分市
--*/