表結構：
給出乙個結點找到該節點的所有 子 節點：
with c_depts as
( select dept.* from department dept where dept.pptr='父節點id'
union all
select dept.* from c_depts ,department dept where dept.pptr=c_depts .deptid
)select c_depts .deptid from c_depts
with p_depts as
( select dept.* from department dept where dept.deptid='結點id'
union all
select dept.* from p_depts ,department dept where dept.deptid=p_depts .pptr
)select p_depts .deptid from p_depts
with c_depts as
( select dept.* from department dept where dept.pptr='001001'
union all
select dept.* from c_depts ,department dept where dept.pptr=c_depts .deptid
)delete department where deptid
in (select c_depts .deptid from c_depts )
/******建庫******/
set ansi_nulls on
goset quoted_identifier on
goset ansi_padding on
gocreate table [dbo].[deptment](
[deptid] [varchar](50) not null,
[deptname] [nvarchar](200) null,
[pptr] [varchar](50) null,
constraint [pk_deptment] primary key clustered
( [deptid] asc
)with (pad_index = off, statistics_norecompute = off, ignore_dup_key = off, allow_row_locks = on, allow_page_locks = on) on [primary]
) on [primary]
goset ansi_padding off
go/*********插入資料***********/
insert [dbo].[deptment] ([deptid], [deptname], [pptr]) values (n'001', n'部門列表', null)
insert [dbo].[deptment] ([deptid], [deptname], [pptr]) values (n'001001', n'第一大部門', n'001')
insert [dbo].[deptment] ([deptid], [deptname], [pptr]) values (n'001002', n'第二大部門', n'001')
insert [dbo].[deptment] ([deptid], [deptname], [pptr]) values (n'2f09ed6b90074ce99339f5615a075529', null, n'a3e46530-cb26-4879-948e-09233ec4678b')
insert [dbo].[deptment] ([deptid], [deptname], [pptr]) values (n'37dc11eb-74a0-44e0-ab8b-6ae2e502e249', n'綜合部', n'001001')
insert [dbo].[deptment] ([deptid], [deptname], [pptr]) values (n'5193021e-d358-43d8-bfb9-aa042f82dcfc', n'綜合部1', n'37dc11eb-74a0-44e0-ab8b-6ae2e502e249')
insert [dbo].[deptment] ([deptid], [deptname], [pptr]) values (n'553274d8-2d86-46cd-8677-9e9190eda125', n'綜合部2', n'001001')
insert [dbo].[deptment] ([deptid], [deptname], [pptr]) values (n'6cb65a7f-128b-4fe5-92f7-f11e2aff28b4', n'發展部', n'5193021e-d358-43d8-bfb9-aa042f82dcfc')
insert [dbo].[deptment] ([deptid], [deptname], [pptr]) values (n'7a39c46d-c405-4ad0-b703-ef42884f4071', null, n'001002')
insert [dbo].[deptment] ([deptid], [deptname], [pptr]) values (n'a3e46530-cb26-4879-948e-09233ec4678b', n'技術部', n'001002')
insert [dbo].[deptment] ([deptid], [deptname], [pptr]) values (n'e6e46430-cb20-4809-949e-09233ec408b1', n'領導班子', n'37dc11eb-74a0-44e0-ab8b-6ae2e502e249')
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