求一SQL语句。

[超级小猪拱白菜]

表一:Company（部门表）
company(部门名称) companyCode(部门编号)

软件部 02101
实施部 02102

表二：Room_apply（会议表）
room_type(类型) companyCode(部门编号) company(部门名称)

类型一 02101 软件部
类型二 02101 软件部
类型一 02102 实施部
类型二 02101 软件部



如何实现效果如下：

部门 类型一 类型二

软件部 1 2
实施部 1 0



今天头晕了 搞了一天没搞出来，

[jwdream2008]

select company
,sum(case when [room_type]='类型一' then 1 else 0 end) as '类型一'
,sum(case when [room_type]='类型二' then 1 else 0 end) as '类型二' 
from Room_apply
group by company 

[黄_瓜]

--行列互转
/******************************************************************************************************************************************************
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)
*/

[水妹妹]

--> 测试数据: [Company]
if object_id('[Company]') is not null drop table [Company]
go
create table [Company] (company varchar(6),companyCode varchar(5))
insert into [Company]
select '软件部','02101' union all
select '实施部','02102'
--> 测试数据: [Room_apply]
if object_id('[Room_apply]') is not null drop table [Room_apply]
go 
create table [Room_apply] (room_type varchar(6),companyCode varchar(5),company varchar(6))
insert into [Room_apply]
select '类型一','02101','软件部' union all
select '类型二','02101','软件部' union all
select '类型一','02102','实施部' union all
select '类型二','02101','软件部'

select a.*,
	[类型一]=sum(case when room_type='类型一' then 1 else 0 end),
	[类型二]=sum(case when room_type='类型二' then 1 else 0 end)    
from [Company] a,[Room_apply] b
where a.companyCode=b.companyCode
group by a.company,a.companyCode

company companyCode 类型一         类型二
------- ----------- ----------- -----------
软件部     02101       1           2
实施部     02102       1           0

(2 行受影响)

[超级小猪拱白菜]

明天来给大家结贴，今天下班回家了。谢谢高数们

[茫茫大海]

select company as '部门',sum(type1) as '类型一',sum(type2) as '类型二'
from 
(
select company,
(
case room_type
when '类型一' then 1
else 0
end
)
as type1,
(
case room_type
when '类型二' then 1
else 0
end
)
as type2
from room_apply
) t
group by company

[abuying]

declare @s nvarchar(4000)
set @s=''
Select @s=@s+','+quotename([room_type])+'=sum(case when [room_type]='+quotename([room_type],'''')+' then 1 else 0 end)'
from (select distinct room_type from room_apply) tt
exec('select [company]'+@s+' from Company inner join  Room_apply on  Company.companyCode=roo_apply.companyCode group by [company]')