SQL 行转列

[benben_tong]

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！

[AcHerat]

--PropTime Props PropsCoun
declare @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)) t
select @sql = @sql + ' from Hong_Props group by convert(varchar(10),PropTime,120)'
exec(@sql)

[勿勿]

好像做过类是的帖子
、
http://topic.csdn.net/u/20120217/11/cb980785-7fe5-4e64-a939-312759193221.html

[benben_tong]

[Quote=引用 1 楼 acherat 的回复:]

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(varchar(10),PropTime,120)=……
[/Quote]

嗯，你看问题要求了、、 新手求解、

[勿勿]

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 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
go

 
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 ) t
select @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           0
2012-02-12 0           0           14          2           0
2012-02-13 0           0           0           50          0
2012-02-14 0           9           0           0           0
2012-02-15 20          0           0           0           10

(5 行受影响)

[叶子]

[Quote=引用 3 楼 benben_tong 的回复:]

引用 1 楼 acherat 的回复:

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……
[/Quote]
按时间分组的行转列，小三写得应该没有问题呀。

[勿勿]

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 ) t
select @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           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           0           9
2012-02-15 20          0           0           0           10          30

(5 行受影响)


---or

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  PropTime


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           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           0           9
2012-02-15 20          0           0           0           10          30

(5 行受影响)

[勿勿]

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 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
go

 
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 ) t
select @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  PropTime



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           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           0           9
2012-02-15 20          0           0           0           10          30

(5 行受影响)

[中国风]

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

[开着拖拉机泡妞]

[Quote=引用 7 楼 szstephenzhou 的回复:]

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……
[/Quote]

这个帖子做过了，难道是楼主从发的？？其实你可以拿之前那个简单的修改一下就好了

[开着拖拉机泡妞]

/*
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
2012-02-11 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 0 9
2012-02-15 20 0 0 0 10 30
*/

--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

[gaobinbinbin]

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)