SQL取得樹型目錄下的數據[通用存儲過程]

 

--win 2kp, sqlserver 2000
--來自CSDN: libin_ftsafe(子陌紅塵)
--生成測試數據
create table BOM(ID VARCHAR(10),ParentID VARCHAR(10),Name VARCHAR(1000))
INSERT INTO BOM select 'D0','-1','服裝'
INSERT INTO BOM select 'D1','D0','上衣'
INSERT INTO BOM select 'D2','D0','褲子'
INSERT INTO BOM select 'D3','D1','中山裝'
INSERT INTO BOM select 'D4','D3','圓領中山裝'
go

--創建存儲過程
create procedure sp_getChile
@TName   nvarchar(40),
@IDName  nvarchar(40),
@PIDName nvarchar(40),
@Name    nvarchar(40),
@ID      nvarchar(20)
as
begin
    create table #T(ID VARCHAR(10),ParentID VARCHAR(10),Name VARCHAR(40),Level INT)   
    declare @s nvarchar(4000)   
    set @s = N'declare @i int  set @i = 1'   
 set @s = @s + N'  
                    insert into #t select '+@IDName+N','+@PIDName+N','+@Name+N',@i from '+@TName+N' where ID='''+@ID+N''''
    set @s = @s + N'
    while @@rowcount<>0
    begin
        set @i = @i + 1       
        insert into #t
        select
            a.'+@IDName+N',a.'+@PIDName+N',a.'+@Name+N',@i
        from
            '+@TName+N' a,#t b
        where
            a.'+@PIDName+N'=b.'+@IDName+N' and b.Level = @i-1
    end'
    exec(@s)   
    select ID,ParentID,Name from #T
end
go

--執行存儲過程
exec sp_getChile  'BOM','ID','ParentID','Name','D1'
/*
id         ParentID             name                
---------- -------------------- --------------------
D1         D0                   上衣
D3         D1                   中山裝
D4         D3                   圓領中山裝
*/

--刪除測試數據
drop procedure sp_getChile
drop table BOM



轉http://www.cnweblog.com/yionline/articles/48058.html