现在有2个表
表A:中有个字段为count,有个字段为部门ID,表B为部门表deptId,deptName,我想一条语句统计每个部门下这个字段的统计信息,显示出来成下面的形式: 部门1 部门2 部门3 部门4 部门5 部门6.......
count 部门1的总计 依次类推...
表A:中有个字段为count,有个字段为部门ID,表B为部门表deptId,deptName,我想一条语句统计每个部门下这个字段的统计信息,显示出来成下面的形式: 部门1 部门2 部门3 部门4 部门5 部门6.......
count 部门1的总计 依次类推...
/******************************************************************************************************************************************************
以学生成绩为例子,比较形象易懂整理人:中国风(Roy)日期:2008.06.06
******************************************************************************************************************************************************/--1、行互列
--> --> (Roy)生成測試數據
if not object_id('Class') is null
drop table Class
Go
Create table Class([Student] nvarchar(2),[Course] nvarchar(2),[Score] int)
Insert Class
select N'张三',N'语文',78 union all
select N'张三',N'数学',87 union all
select N'张三',N'英语',82 union all
select N'张三',N'物理',90 union all
select N'李四',N'语文',65 union all
select N'李四',N'数学',77 union all
select N'李四',N'英语',65 union all
select N'李四',N'物理',85
Go
--2000方法:
动态:declare @s nvarchar(4000)
set @s=''
Select @s=@s+','+quotename([Course])+'=max(case when [Course]='+quotename([Course],'''')+' then [Score] else 0 end)'
from Class group by[Course]
exec('select [Student]'+@s+' from Class group by [Student]')
生成静态:select
[Student],
[数学]=max(case when [Course]='数学' then [Score] else 0 end),
[物理]=max(case when [Course]='物理' then [Score] else 0 end),
[英语]=max(case when [Course]='英语' then [Score] else 0 end),
[语文]=max(case when [Course]='语文' then [Score] else 0 end)
from
Class
group by [Student]GO
动态:declare @s nvarchar(4000)
Select @s=isnull(@s+',','')+quotename([Course]) from Class group by[Course]
exec('select * from Class pivot (max([Score]) for [Course] in('+@s+'))b')生成静态:
select *
from
Class
pivot
(max([Score]) for [Course] in([数学],[物理],[英语],[语文]))b生成格式:
/*
Student 数学 物理 英语 语文
------- ----------- ----------- ----------- -----------
李四 77 85 65 65
张三 87 90 82 78(2 行受影响)
*/------------------------------------------------------------------------------------------
go
--加上总成绩(学科平均分)--2000方法:
动态:declare @s nvarchar(4000)
set @s=''
Select @s=@s+','+quotename([Course])+'=max(case when [Course]='+quotename([Course],'''')+' then [Score] else 0 end)'
from Class group by[Course]
exec('select [Student]'+@s+',[总成绩]=sum([Score]) from Class group by [Student]')--加多一列(学科平均分用avg([Score]))生成动态:select
[Student],
[数学]=max(case when [Course]='数学' then [Score] else 0 end),
[物理]=max(case when [Course]='物理' then [Score] else 0 end),
[英语]=max(case when [Course]='英语' then [Score] else 0 end),
[语文]=max(case when [Course]='语文' then [Score] else 0 end),
[总成绩]=sum([Score]) --加多一列(学科平均分用avg([Score]))
from
Class
group by [Student]go--2005方法:动态:declare @s nvarchar(4000)
Select @s=isnull(@s+',','')+quotename([Course]) from Class group by[Course] --isnull(@s+',','') 去掉字符串@s中第一个逗号
exec('select [Student],'+@s+',[总成绩] from (select *,[总成绩]=sum([Score])over(partition by [Student]) from Class) a
pivot (max([Score]) for [Course] in('+@s+'))b ')生成静态:select
[Student],[数学],[物理],[英语],[语文],[总成绩]
from
(select *,[总成绩]=sum([Score])over(partition by [Student]) from Class) a --平均分时用avg([Score])
pivot
(max([Score]) for [Course] in([数学],[物理],[英语],[语文]))b 生成格式:/*
Student 数学 物理 英语 语文 总成绩
------- ----------- ----------- ----------- ----------- -----------
李四 77 85 65 65 292
张三 87 90 82 78 337(2 行受影响)
*/go
set @sql = ''
select @sql = @sql + ',sum(case b.deptName when ''' + deptName + ''' then a.[count] else 0 end) [' + deptName + ']'
from (select distinct deptName from b) as t
set @sql = 'select ' + substring(@sql,2,len(@sql)) + ' from b , a where b.deptId = a.ID'
exec(@sql)
自己再写的试试!
INSERT INTO #A
SELECT 20,1 UNION ALL
SELECT 15,2 UNION ALL
SELECT 28,3 UNION ALL
SELECT 93,4 UNION ALL
SELECT 48,5 CREATE TABLE #B(DEPID INT,DEPNAME VARCHAR(20))
INSERT INTO #B
SELECT 1,'dep_1' union all
SELECT 2,'dep_2' union all
SELECT 3,'dep_3' union all
SELECT 4,'dep_4' union all
SELECT 5,'dep_5'SELECT * FROM #A
SELECT * FROM #B
SELECT
SUM(case when b.depname='dep_1' then a.COUNT else 0 end) as 'dep_1',
SUM(case when b.depname='dep_2' then a.COUNT else 0 end) as 'dep_2',
SUM(case when b.depname='dep_3' then a.COUNT else 0 end) as 'dep_3',
SUM(case when b.depname='dep_4' then a.COUNT else 0 end) as 'dep_4',
SUM(case when b.depname='dep_5' then a.COUNT else 0 end) as 'dep_5'
from #A a inner join #B b on a.DEPID=b.DEPID