sql语句,列A的内容等于上行列B的内容,怎么写
一个表里面结构
工序 数量
1 10
1 1
2 2
2 3
3 2要得到一个结果
工序 计划数量 实际数量
1 11(首行最大值) 11
2 11 5
3 5 2工序2的计划数量等于实际数量
工序3的计划数量等于2的实际数量
工序的实际数量 是工序数量的累加
首行的计划数量等于实际数量
一个表里面结构
工序 数量
1 10
1 1
2 2
2 3
3 2要得到一个结果
工序 计划数量 实际数量
1 11(首行最大值) 11
2 11 5
3 5 2工序2的计划数量等于实际数量
工序3的计划数量等于2的实际数量
工序的实际数量 是工序数量的累加
首行的计划数量等于实际数量
CREATE TABLE BOM(PID INT,ID INT)
INSERT INTO BOM SELECT 801,101
INSERT INTO BOM SELECT 801,102
INSERT INTO BOM SELECT 801,103
INSERT INTO BOM SELECT 801,601
INSERT INTO BOM SELECT 601,101
INSERT INTO BOM SELECT 601,105
INSERT INTO BOM SELECT 601,501
INSERT INTO BOM SELECT 501,106
INSERT INTO BOM SELECT 501,121
GOCREATE FUNCTION F_GETROOT(@PID INT)
RETURNS INT
AS
BEGIN
DECLARE @ID INT
WHILE EXISTS(SELECT 1 FROM BOM WHERE ID=@PID)
BEGIN
SET @ID=@PID
SELECT @PID=PID FROM BOM WHERE ID=@ID
END
RETURN @PID
END
GOSELECT PID=DBO.F_GETROOT(PID),ID FROM BOM
GO/*
PID ID
----------- -----------
801 101
801 102
801 103
801 601
801 101
801 105
801 501
801 106
801 121
*/
DROP FUNCTION F_GETROOT
DROP TABLE BOM
GO
--生成测试数据
create table BOM_1(Item int,bom_head varchar(20),bom_child varchar(20),number int,products_attribute varchar(20))
insert into BOM_1 select 1 ,'A' ,'A1',1,'采购'
insert into BOM_1 select 2 ,'A' ,'A2',2,'生产'
insert into BOM_1 select 3 ,'A2','A3',3,'生产'
insert into BOM_1 select 4 ,'A2','A4',2,'采购'
insert into BOM_1 select 5 ,'A3','A5',2,'采购'
insert into BOM_1 select 6 ,'A3','A6',1,'采购'
insert into BOM_1 select 7 ,'B' ,'B1',1,'采购'
insert into BOM_1 select 8 ,'B' ,'B2',2,'生产'
insert into BOM_1 select 9 ,'B2','B3',3,'生产'
insert into BOM_1 select 10,'B2','B4',2,'采购'
insert into BOM_1 select 11,'B3','B5',2,'采购'
insert into BOM_1 select 12,'B3','B6',2,'采购'
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_stock(@bom_head varchar(20))
returns @t table(bom varchar(20),number int)
as
begin
declare @level int
declare @a table(bom varchar(20),number int,products_attribute varchar(20),[level] int)
set @level=1 if exists(select 1 from BOM_1 where bom_head=@bom_head)
insert into @a
select bom_child,number,products_attribute,@level
from BOM_1
where bom_head=@bom_head
while exists(select 1 from @a where [level]=@level and products_attribute='生产')
begin
set @level=@level+1
insert into @a(bom,number,products_attribute,[level])
select a.bom_child,a.number,a.products_attribute,@level
from BOM_1 a,@a b
where a.bom_head=b.bom and b.[level]=@level-1
end
insert into @t(bom,number) select bom,number from @a where products_attribute='采购'
return
end
go
--执行调用,取父节点'A'一个标准配置分解的采购信息及数量
select * from dbo.f_stock('A')
--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创建用户定义函数,每个子节点de父节点的信息
--生成测试数据
create table BOM(ID int,parentID int,sClassName varchar(10))
insert into BOM values(1,0,'1111' )
insert into BOM values(2,1,'1111_1' )
insert into BOM values(3,2,'1111-1-1' )
insert into BOM values(4,3,'1111-1-1-1')
insert into BOM values(5,1,'1111-2' )go--创建用户定义函数,每个子节点de父节点的信息
create function f_getParent(@ID int)
returns varchar(40)
as
begin
declare @ret varchar(40) while exists(select 1 from BOM where ID=@ID and parentID<>0)
begin
select @ID=b.ID,@ret=','+rtrim(b.ID)+isnull(@ret,'')
from
BOM a,BOM b
where
a.ID=@ID and b.ID=a.parentID
end
set @ret=stuff(@ret,1,1,'')
return @ret
end
go--执行查询
select ID,isnull(dbo.f_getParent(ID),'') as parentID from BOM
go--输出结果
/*
ID parentID
----------- ----------------------------------------
1
2 1
3 1,2
4 1,2,3
5 1
*/--删除测试数据
drop function f_getParent
drop table BOM
go
--参考资料
IF EXISTS (SELECT 1 FROM SYSOBJECTS WHERE name = 'tba')
BEGIN
DROP TABLE tba
END
GO
CREATE TABLE tba
(
col1 INT,
col2 INT
)
GO
INSERT INTO tba
SELECT 1, 10 UNION
SELECT 1, 1 UNION
SELECT 2, 2 UNION
SELECT 2, 3 UNION
SELECT 3, 2
GO
WITH t AS
(SELECT col1,SUM(col2) AS total
FROM tba
GROUP BY col1)SELECT A.col1 AS 工序,
CASE WHEN B.total IS NULL THEN A.total
ELSE B.total END AS 计划数量,
A.total AS 实际数量
FROM t AS A LEFT OUTER JOIN t AS B ON A.col1 = B.col1 + 1工序 计划数量 实际数量
1 11 11
2 11 5
3 5 2
(SELECT RN=ROW_NUMBER() OVER (ORDER BY col1),col1,SUM(col2) AS total
FROM tba
GROUP BY col1)SELECT A.col1 AS 工序,
CASE WHEN B.total IS NULL THEN A.total
ELSE B.total END AS 计划数量,
A.total AS 实际数量
FROM t AS A LEFT OUTER JOIN t AS B ON A.RN = B.RN + 1