~~~~~~~~~行转列问题，马上给分！~~~~~~~~~~~

[hxm20003]

Table_A
id name prop1
1 张3 A
2 张3 B
3 李4 A
4 李4 B
5 李4 C
6 李4 D
7 李4 D
8 李4 D
...

要求根据名称对prop1合计：
name A B C D
张3 1 1 0 0
李4 1 1 1 3
。。。

[發糞塗牆]

----------------------------------------------------------------
-- Author  :DBA_Huangzj(發糞塗牆)
-- Date    :2013-10-10 10:51:04
-- Version:
--      Microsoft SQL Server 2014 (CTP1) - 11.0.9120.5 (X64) 
--	Jun 10 2013 20:09:10 
--	Copyright (c) Microsoft Corporation
--	Enterprise Evaluation Edition (64-bit) on Windows NT 6.2 <X64> (Build 9200: ) (Hypervisor)
--
----------------------------------------------------------------
--> 测试数据：[Table_A]
if object_id('[Table_A]') is not null drop table [Table_A]
go 
create table [Table_A]([id] int,[name] varchar(3),[prop1] varchar(1))
insert [Table_A]
select 1,'张3','A' union all
select 2,'张3','B' union all
select 3,'李4','A' union all
select 4,'李4','B' union all
select 5,'李4','C' union ALL
select 6,'李4','D' union all
select 7,'李4','D' union all
select 8,'李4','D'
--------------开始查询--------------------------

declare @s nvarchar(4000)
set @s=''
Select     @s=@s+','+quotename(prop1)+'=sum(case when prop1='+quotename(prop1,'''')+' then 1 else 0 end)'
from [Table_A] group by prop1
exec('select [name]'+@s+' from [Table_A] group by [name]')
----------------结果----------------------------
/* 
name A           B           C           D
---- ----------- ----------- ----------- -----------
李4   1           1           1           3
张3   1           1           0           0
*/

[MrYangkang]

我还想把类似的例子直接贴，没想到版主的速度。。。

[Andy__Huang]

create table #tb(id int, name varchar(10), prop1 varchar(10))  
insert into #tb
select 1,'张3','A'
union all select 2,'张3','B'
union all select 3,'李4','A'
union all select 4,'李4','B'
union all select 5,'李4','C'
union all select 6,'李4','D'
union all select 7,'李4','D'
union all select 8,'李4','D'


declare @sql varchar(8000)
set @sql=''
select @sql=@sql + ',['+rtrim(prop1)+']=sum(case rtrim(prop1) when '''+rtrim(prop1)+''' then 1 else 0 end)'
from #tb group by rtrim(prop1)
exec('select name'+@sql+' from #tb group by name')

/*
name	A	B	C	D
李4	1	1	1	3
张3	1	1	0	0
*/

[唐诗三百首]

create table Table_A 
(id int, name varchar(10), prop1 varchar(10))

insert into Table_A
 select 1, '张3', 'A' union all
 select 2, '张3', 'B' union all
 select 3, '李4', 'A' union all
 select 4, '李4', 'B' union all
 select 5, '李4', 'C' union all
 select 6, '李4', 'D' union all
 select 7, '李4', 'D' union all
 select 8, '李4', 'D'


select name,
       isnull([A],0) 'A',
       isnull([B],0) 'B',
       isnull([C],0) 'C',
       isnull([D],0) 'D'
from
(select name,prop1,count(1) 'x'
 from Table_A a
 group by name,prop1) t
pivot(max(x) for prop1 in([A],[B],[C],[D])) p
order by name desc

/*
name       A           B           C           D
---------- ----------- ----------- ----------- -----------
张3         1           1           0           0
李4         1           1           1           3

(2 row(s) affected)
*/

[hxm20003]

消息 102，级别 15，状态 1，第 1 行 ' ' 附近有语法错误。 消息 137，级别 15，状态 2，第 19 行 必须声明标量变量 "@s"。 执行报错？？？

[發糞塗牆]

我的？

[Landa_Peter]

if object_id('[Table_A]') is not null drop table [Table_A]
go 
create table [Table_A]([id] int,[name] varchar(3),[prop1] varchar(1))
insert [Table_A]
select 1,'张3','A' union all
select 2,'张3','B' union all
select 3,'李4','A' union all
select 4,'李4','B' union all
select 5,'李4','C' union ALL
select 6,'李4','D' union all
select 7,'李4','D' union all
select 8,'李4','D'
--------------开始查询--------------------------

DECLARE @sql NVARCHAR(MAX), @colList NVARCHAR(MAX)
SET @colList=(select STUFF((select ','+quotename([prop1]) from [Table_A] group by [prop1] for XML path('')),1,1,''))
SET @sql = N'select name, 
                    isnull([A],0) A,
				    isnull([B],0) B,
				    isnull([C],0) C,
				    isnull([D],0) D
		     from
    (
    select * from
    (select count(*) num,name,prop1 from [Table_A] a
    group by name,prop1)A
    pivot
    (max([num]) for [prop1] in('+ @colList +')) b
    )C
'
EXEC(@sql)

这样行吗