表1.
CODE PARENT_CODE
1
1.1 1
1.2 1
2
2.1 2
2.1.1 2.1
2.1.1.1 2.1.1
2.2 2
3
4
表2
CODE YEAR_QTY
2.1.1.1 54.51
1.1 432.97
3 52.81
希望查到的结果是
CODE PARENT_CODE YEAR_QTY
1
1.1 1.1 432.97
2
2.1 2
2.1.1 2.1
2.1.1.1 2.1.1 54.51
3 52.81就是以表2,查到表2和表1中相同的CODE以及CODE的父级,求解答
CODE PARENT_CODE
1
1.1 1
1.2 1
2
2.1 2
2.1.1 2.1
2.1.1.1 2.1.1
2.2 2
3
4
表2
CODE YEAR_QTY
2.1.1.1 54.51
1.1 432.97
3 52.81
希望查到的结果是
CODE PARENT_CODE YEAR_QTY
1
1.1 1.1 432.97
2
2.1 2
2.1.1 2.1
2.1.1.1 2.1.1 54.51
3 52.81就是以表2,查到表2和表1中相同的CODE以及CODE的父级,求解答
???
要根据表2的CODE来查询。
表2的CODE作为最子结果来查询它的父节点,以及父节点的上级
--> 测试数据: [表1]
if object_id('[表1]') is not null drop table [表1]
create table [表1] (CODE varchar(7),PARENT_CODE varchar(5))
insert into [表1]
select '1',null union all
select '1.1','1' union all
select '1.2','1' union all
select '2',null union all
select '2.1','2' union all
select '2.1.1','2.1' union all
select '2.1.1.1','2.1.1' union all
select '2.2','2' union all
select '3',null union all
select '4',null
--> 测试数据: [表2]
if object_id('[表2]') is not null drop table [表2]
create table [表2] (CODE varchar(7),YEAR_QTY numeric(5,2))
insert into [表2]
select '2.1.1.1',54.51 union all
select '1.1',432.97 union all
select '3',52.81
gowith wsp
as
(
select a.code,b.parent_code,a.year_qty from [表2] a,表1 b where a.code=b.code
union all
select a.*,null from 表1 a,wsp b where a.code=b.parent_code
)
select * from wsp order by code--结果:
code parent_code year_qty
------- ----------- -------------
1 NULL NULL
1.1 1 432.97
2 NULL NULL
2.1 2 NULL
2.1.1 2.1 NULL
2.1.1.1 2.1.1 54.51
3 NULL 52.81
有用SQL 2000的么
----------------------------------------------------------------
-- Author :fredrickhu(小F,向高手学习)
-- Date :2009-09-08 23:39:25
-- Version:
-- Microsoft SQL Server 2005 - 9.00.4035.00 (Intel X86)
-- Nov 24 2008 13:01:59
-- Copyright (c) 1988-2005 Microsoft Corporation
-- Developer Edition on Windows NT 5.1 (Build 2600: Service Pack 3)
--
----------------------------------------------------------------
--> 测试数据:[表1]
if object_id('[表1]') is not null drop table [表1]
go
create table [表1]([CODE] varchar(7),[PARENT_CODE] varchar(5))
insert [表1]
select '1',null union all
select '1.1','1' union all
select '1.2','1' union all
select '2',null union all
select '2.1','2' union all
select '2.1.1','2.1' union all
select '2.1.1.1','2.1.1' union all
select '2.2','2' union all
select '3',null union all
select '4',null
--> 测试数据:[表2]
if object_id('[表2]') is not null drop table [表2]
go
create table [表2]([CODE] varchar(7),[YEAR_QTY] numeric(5,2))
insert [表2]
select '2.1.1.1',54.51 union all
select '1.1',432.97 union all
select '3',52.81
--------------开始查询--------------------------
;with f as
(
select a.code,b.parent_code,a.year_qty from [表2] a,表1 b where a.code=b.code
union all
select a.*,null from 表1 a,f b where a.code=b.parent_code
)
select * from f order by code----------------结果----------------------------
/* code parent_code year_qty
------- ----------- ---------------------------------------
1 NULL NULL
1.1 1 432.97
2 NULL NULL
2.1 2 NULL
2.1.1 2.1 NULL
2.1.1.1 2.1.1 54.51
3 NULL 52.81(7 行受影响)
*/
----------------------------------------------------------------------------------------------------------------
create table tb(id varchar(3) , pid varchar(3) , name varchar(10))
insert into tb values('001' , null , '广东省')
insert into tb values('002' , '001' , '广州市')
insert into tb values('003' , '001' , '深圳市')
insert into tb values('004' , '002' , '天河区')
insert into tb values('005' , '003' , '罗湖区')
insert into tb values('006' , '003' , '福田区')
insert into tb values('007' , '003' , '宝安区')
insert into tb values('008' , '007' , '西乡镇')
insert into tb values('009' , '007' , '龙华镇')
insert into tb values('010' , '007' , '松岗镇')
go --查询指定节点及其所有子节点的函数
create function f_cid(@ID varchar(3)) returns @t_level table(id varchar(3) , level int)
as
begin
declare @level int
set @level = 1
insert into @t_level select @id , @level
while @@ROWCOUNT > 0
begin
set @level = @level + 1
insert into @t_level select a.id , @level
from tb a , @t_Level b
where a.pid = b.id and b.level = @level - 1
end
return
end
go --调用函数查询001(广东省)及其所有子节点
select a.* from tb a , f_cid('001') b where a.id = b.id order by a.id
/*
id pid name
---- ---- ----------
001 NULL 广东省
002 001 广州市
003 001 深圳市
004 002 天河区
005 003 罗湖区
006 003 福田区
007 003 宝安区
008 007 西乡镇
009 007 龙华镇
010 007 松岗镇 (所影响的行数为 10 行)
*/ --调用函数查询002(广州市)及其所有子节点
select a.* from tb a , f_cid('002') b where a.id = b.id order by a.id
/*
id pid name
---- ---- ----------
002 001 广州市
004 002 天河区 (所影响的行数为 2 行)
*/ --调用函数查询003(深圳市)及其所有子节点
select a.* from tb a , f_cid('003') b where a.id = b.id order by a.id
/*
id pid name
---- ---- ----------
003 001 深圳市
005 003 罗湖区
006 003 福田区
007 003 宝安区
008 007 西乡镇
009 007 龙华镇
010 007 松岗镇 (所影响的行数为 7 行)
*/ drop table tb
drop function f_cid
谢谢大家,
fredrickhu,我套用你的试试看
2000:
--> 测试数据: [表1]
if object_id('[表1]') is not null drop table [表1]
create table [表1] (CODE varchar(7),PARENT_CODE varchar(5))
insert into [表1]
select '1',null union all
select '1.1','1' union all
select '1.2','1' union all
select '2',null union all
select '2.1','2' union all
select '2.1.1','2.1' union all
select '2.1.1.1','2.1.1' union all
select '2.2','2' union all
select '3',null union all
select '4',null
--> 测试数据: [表2]
if object_id('[表2]') is not null drop table [表2]
create table [表2] (CODE varchar(7),YEAR_QTY numeric(5,2))
insert into [表2]
select '2.1.1.1',54.51 union all
select '1.1',432.97 union all
select '3',52.81
go
create function wsp()
returns @t table(code varchar(10),parent_code varchar(10),year_qty numeric(5,2),level int)
as
begin
declare @level int
set @level=1
insert into @t select a.code,b.parent_code,a.year_qty,@level from [表2] a,表1 b where a.code=b.code
while(@@rowcount>0)
begin
set @level=@level+1
insert into @t select a.*,null,@level from 表1 a,@t b where a.code=b.parent_code and b.level=@level-1
end
return
end
goselect * from dbo.wsp() order by code
结贴了~~~
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