SQL 行转列
现有表[Hong_Props],表中的字段如下：

PropID PropGameType PropArrea type PropTime Props PropsCoun

1 1 1 金币 2012-02-11 道具A 24
2 2 2 金币 2012-02-11 道具B 15
3 1 1 绑定金币 2012-02-12 道具C 14
4 2 1 金币 2012-02-12 道具D 2
5 2 2 金币 2012-02-13 道具D 50
6 1 2 绑定金币 2012-02-14 道具B 9
7 2 2 绑定金币 2012-02-15 道具E 10
8 1 1 金币 2012-02-15 道具A 20


先我要得到的查询效果为：

日期 道具A 道具B 道具C 道具D 道具E 累计
2012-02-11 24 15 0 0 0 39
2012-02-12 0 0 14 2 0 16
2012-02-13 0 0 0 50 0 50
2012-02-14 0 9 0 0 10 19
2012-02-15 20 0 0 0 10 30


急求高手帮忙！
急求高手帮忙！
急求高手帮忙！
急求高手帮忙！

[解决办法]

SQL code

--PropTime Props PropsCoundeclare @sql varchar(8000)set @sql = 'select convert(varchar(10),PropTime,120) PropTime'select @sql = @sql + ',sum(case when convert(varchar(10),PropTime,120)='''+date+''' then PropsCoun else 0 end) ['+date+']'from(select convert(varchar(10),PropTime,120) date from Hong_Props group by convert(varchar(10),PropTime,120)) tselect @sql = @sql + ' from Hong_Props group by convert(varchar(10),PropTime,120)'exec(@sql)
[解决办法]
好像做过类是的帖子
、
http://topic.csdn.net/u/20120217/11/cb980785-7fe5-4e64-a939-312759193221.html
[解决办法]
SQL code
create table Hong_Props(PropID int,PropGameType int,PropArrea int,PropTime datetime,Props varchar(20),PropsCoun int)insert into Hong_Propsselect 1 ,1 ,1 ,'2012-02-11' ,'道具A' ,24 union allselect 2 ,2 ,2 ,'2012-02-11' ,'道具B' ,15 union allselect 3 ,1 ,1 ,'2012-02-12' ,'道具C' ,14 union allselect 4 ,2 ,1 ,'2012-02-12' ,'道具D' ,2 union allselect 5 ,2 ,2 ,'2012-02-13' ,'道具D' ,50 union allselect 6 ,1 ,2 ,'2012-02-14' ,'道具B' ,9 union allselect 7 ,2 ,2 ,'2012-02-15' ,'道具E' ,10 union allselect 8 ,1 ,1 ,'2012-02-15' ,'道具A' ,20go declare @str varchar(max)set @str = 'select convert(varchar(10),PropTime,120) PropTime'select @str = @str + ',sum(case when Props='''+Props+''' then PropsCoun else 0 end) ['+Props+']'from(select Props from Hong_Props group by Props ) tselect @str = @str + ' from Hong_Props group by  PropTime'exec(@str)PropTime   道具A         道具B         道具C         道具D         道具E---------- ----------- ----------- ----------- ----------- -----------2012-02-11 24          15          0           0           02012-02-12 0           0           14          2           02012-02-13 0           0           0           50          02012-02-14 0           9           0           0           02012-02-15 20          0           0           0           10(5 行受影响)
[解决办法]
探讨


引用:

SQL code

--PropTime Props PropsCoun
declare @sql varchar(8000)
set @sql = 'select convert(varchar(10),PropTime,120) PropTime'
select @sql = @sql + ',sum(case when convert……

[解决办法]
SQL code
declare @str varchar(max)set @str = 'select convert(varchar(10),PropTime,120) PropTime'select @str = @str + ',sum(case when Props='''+Props+''' then PropsCoun else 0 end) ['+Props+']'from(select Props from Hong_Props group by Props ) tselect @str = @str +',SUM(PropsCoun) as 累计'+  ' from Hong_Props group by  PropTime'print (@str)exec(@str)PropTime   道具A         道具B         道具C         道具D         道具E         累计---------- ----------- ----------- ----------- ----------- ----------- -----------2012-02-11 24          15          0           0           0           392012-02-12 0           0           14          2           0           162012-02-13 0           0           0           50          0           502012-02-14 0           9           0           0           0           92012-02-15 20          0           0           0           10          30(5 行受影响)---orselect convert(varchar(10),PropTime,120) PropTime,sum(case when Props='道具A' then PropsCoun else 0 end) [道具A],sum(case when Props='道具B' then PropsCoun else 0 end) [道具B],sum(case when Props='道具C' then PropsCoun else 0 end) [道具C],sum(case when Props='道具D' then PropsCoun else 0 end) [道具D],sum(case when Props='道具E' then PropsCoun else 0 end) [道具E],SUM(PropsCoun) as 累计 from Hong_Props group by  PropTimePropTime   道具A         道具B         道具C         道具D         道具E         累计---------- ----------- ----------- ----------- ----------- ----------- -----------2012-02-11 24          15          0           0           0           392012-02-12 0           0           14          2           0           162012-02-13 0           0           0           50          0           502012-02-14 0           9           0           0           0           92012-02-15 20          0           0           0           10          30(5 行受影响) 
 
[解决办法]
SQL code
create table Hong_Props(PropID int,PropGameType int,PropArrea int,PropTime datetime,Props varchar(20),PropsCoun int)insert into Hong_Propsselect 1 ,1 ,1 ,'2012-02-11' ,'道具A' ,24 union allselect 2 ,2 ,2 ,'2012-02-11' ,'道具B' ,15 union allselect 3 ,1 ,1 ,'2012-02-12' ,'道具C' ,14 union allselect 4 ,2 ,1 ,'2012-02-12' ,'道具D' ,2 union allselect 5 ,2 ,2 ,'2012-02-13' ,'道具D' ,50 union allselect 6 ,1 ,2 ,'2012-02-14' ,'道具B' ,9 union allselect 7 ,2 ,2 ,'2012-02-15' ,'道具E' ,10 union allselect 8 ,1 ,1 ,'2012-02-15' ,'道具A' ,20go declare @str varchar(max)set @str = 'select convert(varchar(10),PropTime,120) PropTime'select @str = @str + ',sum(case when Props='''+Props+''' then PropsCoun else 0 end) ['+Props+']'from(select Props from Hong_Props group by Props ) tselect @str = @str +',SUM(PropsCoun) as 累计'+  ' from Hong_Props group by  PropTime'print (@str)exec(@str) select convert(varchar(10),PropTime,120) PropTime,sum(case when Props='道具A' then PropsCoun else 0 end) [道具A],sum(case when Props='道具B' then PropsCoun else 0 end) [道具B],sum(case when Props='道具C' then PropsCoun else 0 end) [道具C],sum(case when Props='道具D' then PropsCoun else 0 end) [道具D],sum(case when Props='道具E' then PropsCoun else 0 end) [道具E],SUM(PropsCoun) as 累计 from Hong_Props group by  PropTimePropTime   道具A         道具B         道具C         道具D         道具E         累计---------- ----------- ----------- ----------- ----------- ----------- -----------2012-02-11 24          15          0           0           0           392012-02-12 0           0           14          2           0           162012-02-13 0           0           0           50          0           502012-02-14 0           9           0           0           0           92012-02-15 20          0           0           0           10          30(5 行受影响)
[解决办法]
参照方法,SQL2005以上版本可用pivot
http://topic.csdn.net/u/20080614/17/22e73f33-f071-46dc-b9bf-321204b1656f.html
[解决办法]
探讨


SQL code
create table Hong_Props(
PropID int,PropGameType int,PropArrea int,PropTime datetime,Props varchar(20),PropsCoun int
)
insert into Hong_Props
select 1 ,1 ,1 ,'2012-02-11' ,'道具A' ,24 union a……

[解决办法]
/*
现有表[Hong_Props],表中的字段如下：

PropID PropGameType PropArrea type PropTime Props PropsCoun

 1 1 1 金币 2012-02-11 道具A 24
 2 2 2 金币 2012-02-11 道具B 15
 3 1 1 绑定金币 2012-02-12 道具C 14
 4 2 1 金币 2012-02-12 道具D 2
 5 2 2 金币 2012-02-13 道具D 50
 6 1 2 绑定金币 2012-02-14 道具B 9
 7 2 2 绑定金币 2012-02-15 道具E 10
 8 1 1 金币 2012-02-15 道具A 20
   
   
先我要得到的查询效果为：

 日期 道具A 道具B 道具C 道具D 道具E 累计
2012-02-11 24 15 0 0 0 39 
2012-02-12 0 0 14 2 0 16
2012-02-13 0 0 0 50 0 50 
2012-02-14 0 9 0 0 10 19
2012-02-15 20 0 0 0 10 30


*/

--生成测试数据：
go
if OBJECT_ID('Hong_Props')is not null
drop table Hong_Props
go
create table Hong_Props(
PropID int,
PropGameType int,
PropArrea int,
PropTime date,
Props varchar(20),
PropsCoun int
)
go
insert Hong_Props
select 1 ,1 ,1 ,'2012-02-11' ,'道具A' ,24 union all
select 2 ,2 ,2 ,'2012-02-11' ,'道具B' ,15 union all
select 3 ,1 ,1 ,'2012-02-12' ,'道具C' ,14 union all
select 4 ,2 ,1 ,'2012-02-12' ,'道具D' ,2 union all
select 5 ,2 ,2 ,'2012-02-13' ,'道具D' ,50 union all
select 6 ,1 ,2 ,'2012-02-14' ,'道具B' ,9 union all
select 7 ,2 ,2 ,'2012-02-15' ,'道具E' ,10 union all
select 8 ,1 ,1 ,'2012-02-15' ,'道具A' ,20

declare @str varchar(1000)
set @str=''
select @str=@str+','+Props+ 
 
'=max(case when Props='+quotename(Props,'''')+' then PropsCoun else 0 end)'  
from Hong_Props
group by Props
--print @str
select @str='select PropTime'+@str+',sum(PropsCoun) as 累计 from Hong_Props group by PropTime'
--print @str
exec (@str)

/*
PropTime道具A道具B道具C道具D道具E累计
2012-02-11241500039
2012-02-1200142016
2012-02-1300050050
2012-02-14090009
2012-02-15200001030
*/

--你这个查询也就是很标准的行列转换问题，动态实现的基本方法就是拼接查询语句
[解决办法]
declare @sql varchar(max)  
set @sql='select Props'
 select @sql=@sql+',sum(case convert(varchar(10),PropTime,120) when '''+date+''' then PropsCoun else 0 end)['+date+']'  
from (
select convert(varchar(10),PropTime,120)as date from Hong_Props  
group by convert(varchar(10),PropTime,120)
) t  
  select @sql=@sql+',sum(PropsCoun) as qq from Hong_Props group by props'
exec (@sql)