日期:2014-05-18 浏览次数:20413 次
--生成测试数据 create table BOM(ID INT,PID INT,MSG VARCHAR(1000)) insert into BOM select 1,0,NULL insert into BOM select 2,1,NULL insert into BOM select 3,1,NULL insert into BOM select 4,2,NULL insert into BOM select 5,3,NULL insert into BOM select 6,5,NULL insert into BOM select 7,6,NULL go --创建用户定义函数用于取每个父节点下子节点的采购配置信息 create function f_getChild(@ID VARCHAR(10)) returns @t table(ID VARCHAR(10),PID VARCHAR(10),Level INT) as begin declare @i int set @i = 1 insert into @t select ID,PID,@i from BOM where PID = @ID while @@rowcount<>0 begin set @i = @i + 1 insert into @t select a.ID,a.PID,@i from BOM a,@t b where a.PID=b.ID and b.Level = @i-1 end return end go --执行查询 select ID from dbo.f_getChild(3) go --输出结果 /* ID ---- 5 6 7 */ --删除测试数据 drop function f_getChild drop table BOM