create proc proc_tree (@node int)
asbegin
declare @i int
set @i = 0
set nocount on
drop table ##res
create table ##res ( node int, child int, weight int, op int)
insert ##res select *,0 from tree where node = @node
while exists(select * from ##res where op = 0 and child <> 0)
begin
set @i = @i + 1
update ##res set op = @i where op = 0 and child <> 0
insert ##res select a.*,0 from tree a,##res b where a.node = b.child and b.op = @i
endselect * from ##res
set nocount off
endcopy別人的乙個來看看：
--定義儲存過程:
create procedure parts_explosion() //in @current char(25)
result(part_no char(25),structure_level integer,structure_qty decimal(15,6)
,children integer,siblings integer,open_children integer,same_level integer)
begin
declare @current char(25); --存放當前待查產品或零件
declare @level integer; --存放產品層次
declare @structure_qty decimal(15,4); --存放構成數量
select '最初產品編號' into @current; --後台測試用
create table #stack( --中間結果存表
current_item char(25) null,
part_level integer null,
part_qty decimal(15,4) null,
);create table #parts( --最後返回結果存放表
part_no char(25) null,
structure_level integer null,
structure_qty decimal(15,6) null,
children integer null, --存放如果有子級產品.則1.否0.
siblings integer null, --存放是否鄰居產品
open_children integer null, --前台用
same_level integer null, --前台用
);/* select @current='45860020a'*/
insert into #stack values(@current,1,1); --初始中間表
select 1 into @level;
while @level>0 loop
if exists(select* from #stack where part_level=@level) then
select current_item,part_qty into @current,
@structure_qty from #stack
where part_level=@level;
if @level<>1 then
insert into #parts values(@current,@level,@structure_qty,1,1,1,1)
end if
;delete from #stack
where part_level=@level and current_item=@current;
insert into #stack
select part_no,@level+1,part_qty
from product_stru
where product_no=@current;
if @@rowcount>0 then
select @level+1 into @level;
if @@rowcount=1 then
update #parts set same_level=0
where part_no=@current
end if
else
update #parts set children=0
where part_no=@current
end if
else
select @level-1 into @level
end if
end loop
;select part_no,structure_level,structure_qty,children,siblings,open_children,same_level from #parts
end--以下來自鄒鍵的blog
--得到指定id的子id列表
create function f_getchildid(@id int)
returns @re table(id int)
asbegin
insert into @re select id from tb where pid=@id
while @@rowcount>0
insert into @re select a.id
from tb a inner join @re b on a.pid=b.id
where a.id not in(select id from @re)
return
endgo
--得到指定id的父id列表
create function f_getparentid(@id int)
returns @re table(id int)
asbegin
declare @pid int
select @pid=pid from tb where id=@id
while @pid<>0
begin
insert into @re values(@pid)
select @pid=pid from tb where id=@pid
endreturn
endgo
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