在access或Sql server数据表中如何将格式 日期 金额
2005-1-1 12.5
2005-1-2 256.6
2006-1-2 768
2007-1-2 678
2008-1-2 456
2009-1-2 456
2005-1-2 56.3转换为如下格式:
2005-1-1 2005-1-2 2006-1-2 2007-1-2 2008-1-2 2009-1-2
12.5 312.9 768 678 456 456相同日期取合计呢?
请高手帮忙解答。谢谢!
2005-1-1 12.5
2005-1-2 256.6
2006-1-2 768
2007-1-2 678
2008-1-2 456
2009-1-2 456
2005-1-2 56.3转换为如下格式:
2005-1-1 2005-1-2 2006-1-2 2007-1-2 2008-1-2 2009-1-2
12.5 312.9 768 678 456 456相同日期取合计呢?
请高手帮忙解答。谢谢!
/******************************************************************************************************************************************************
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--2、列转行
--> --> (Roy)生成測試數據
if not object_id('Class') is null
drop table Class
Go
Create table Class([Student] nvarchar(2),[数学] int,[物理] int,[英语] int,[语文] int)
Insert Class
select N'李四',77,85,65,65 union all
select N'张三',87,90,82,78
Go--2000:动态:declare @s nvarchar(4000)
select @s=isnull(@s+' union all ','')+'select [Student],[Course]='+quotename(Name,'''')--isnull(@s+' union all ','') 去掉字符串@s中第一个union all
+',[Score]='+quotename(Name)+' from Class'
from syscolumns where ID=object_id('Class') and Name not in('Student')--排除不转换的列
order by Colid
exec('select * from ('+@s+')t order by [Student],[Course]')--增加一个排序生成静态:
select *
from (select [Student],[Course]='数学',[Score]=[数学] from Class union all
select [Student],[Course]='物理',[Score]=[物理] from Class union all
select [Student],[Course]='英语',[Score]=[英语] from Class union all
select [Student],[Course]='语文',[Score]=[语文] from Class)t
order by [Student],[Course]go
--2005:动态:declare @s nvarchar(4000)
select @s=isnull(@s+',','')+quotename(Name)
from syscolumns where ID=object_id('Class') and Name not in('Student')
order by Colid
exec('select Student,[Course],[Score] from Class unpivot ([Score] for [Course] in('+@s+'))b')go
select
Student,[Course],[Score]
from
Class
unpivot
([Score] for [Course] in([数学],[物理],[英语],[语文]))b生成格式:
/*
Student Course Score
------- ------- -----------
李四 数学 77
李四 物理 85
李四 英语 65
李四 语文 65
张三 数学 87
张三 物理 90
张三 英语 82
张三 语文 78(8 行受影响)
*/
declare @sql varchar(8000)
set @sql='select '
select @sql=@sql+',['+日期+']=sum(case convert(varchar(10),日期,120) when '''+日期+''' then 金额 else 0 end)'
from (select distinct 日期=convert(varchar(10),日期,120) from 表名)a
set @sql=stuff(@sql,1,1,'')+' from 表名'
exec(@sql)
if not object_id('tt') is null drop table tt
create TABLE tt(日期 datetime,金额 decimal(10,2))
insert tt select
'2005-1-1' , 12.5 union all select
'2005-1-2' , 256.6 union all select
'2006-1-2' , 768 union all select
'2007-1-2' , 678 union all select
'2008-1-2' , 456 union all select
'2009-1-2' , 456 union all select
'2005-1-2' , 56.3
declare @s varchar(4000)
set @s=''select @s=@s+',['+convert(varchar(10),日期,112)+']=max(case when [日期]='+quotename([日期],'''')+' then [金额] else 0 end)'
from tt group by [日期]set @s=stuff(@s,1,1,'')
exec('select '+@s+' from tt ')drop table tt20050101 20050102 20060102 20070102 20080102 20090102
--------------------------------------- --------------------------------------- --------------------------------------- --------------------------------------- --------------------------------------- ---------------------------------------
12.50 256.60 768.00 678.00 456.00 456.00(1 行受影响)
drop table tt
go
create TABLE tt(日期 datetime,金额 decimal(10,2))
insert tt select
'2005-1-1' , 12.5 union all select
'2005-1-2' , 256.6 union all select
'2006-1-2' , 768 union all select
'2007-1-2' , 678 union all select
'2008-1-2' , 456 union all select
'2009-1-2' , 456 union all select
'2005-1-2' , 56.3 declare @sql varchar(8000)
set @sql=''
select @sql=@sql+',['+日期+']=sum(case convert(varchar(10),日期,120) when '''+日期+''' then 金额 else 0 end)'
from (select distinct 日期=convert(varchar(10),日期,120) from tt)a
set @sql='select '+stuff(@sql,1,1,'')+' from tt'
exec(@sql)
/*
2005-01-01 2005-01-02 2006-01-02 2007-01-02 2008-01-02 2009-01-02
--------------------------------------- --------------------------------------- --------------------------------------- --------------------------------------- --------------------------------------- ---------------------------------------
12.50 312.90 768.00 678.00 456.00 456.00*/
呵呵,是不对,看错了
if not object_id('tt') is null drop table tt
create TABLE tt(日期 datetime,金额 decimal(10,2))
insert tt select
'2005-1-1' , 12.5 union all select
'2005-1-2' , 256.6 union all select
'2006-1-2' , 768 union all select
'2007-1-2' , 678 union all select
'2008-1-2' , 456 union all select
'2009-1-2' , 456 union all select
'2005-1-2' , 56.3
declare @s varchar(4000)
set @s=''select @s=@s+',['+convert(varchar(10),日期,112)+']=sum(case when [日期]='+quotename([日期],'''')+' then [金额] else 0 end)'
from tt group by [日期]set @s=stuff(@s,1,1,'')
exec('select '+@s+' from tt ')drop table tt20050101 20050102 20060102 20070102 20080102 20090102
--------------------------------------- --------------------------------------- --------------------------------------- --------------------------------------- --------------------------------------- ---------------------------------------
12.50 312.90 768.00 678.00 456.00 456.00(1 行受影响)
drop table tt
go
create TABLE tt(日期 datetime,金额 decimal(10,2))
insert tt select
'2005-1-1' , 12.5 union all select
'2005-1-2' , 256.6 union all select
'2006-1-2' , 768 union all select
'2007-1-2' , 678 union all select
'2008-1-2' , 456 union all select
'2009-1-2' , 456 union all select
'2005-1-2' , 56.3 declare @sql varchar(8000)
set @sql=''
select @sql=@sql+',['+日期+']=sum(case 日期 when '''+日期+''' then 金额 else 0 end)'
from (select distinct 日期=convert(varchar(10),日期,120) from tt)a
set @sql='select '+stuff(@sql,1,1,'')+' from tt'
exec(@sql)
/*
2005-01-01 2005-01-02 2006-01-02 2007-01-02 2008-01-02 2009-01-02
--------------------------------------- --------------------------------------- --------------------------------------- --------------------------------------- --------------------------------------- ---------------------------------------
12.50 312.90 768.00 678.00 456.00 456.00*/
将查询改为
declare @s varchar(4000)
set @s=''select @s=@s+',['+convert(varchar(10),日期,120)+']=sum(case when [日期]='+quotename([日期],'''')+' then [金额] else 0 end)'
from tt group by [日期]set @s=stuff(@s,1,1,'')
exec('select '+@s+' from tt ')
就可以得到合计了。
谢谢大家的回帖。