SQL Server数据库动态交叉表的参考示例

SQL Server数据库动态交叉表的参考示例:

--建立测试环境

以下为引用的内容：

set nocount on

create table test(model varchar(20),date int ,qty int)

insert into test select 'a','8','10'

insert into test select 'a','10','50'

insert into test select 'b','8','100'

insert into test select 'b','9','200'

insert into test select 'b','10','100'

insert into test select 'c','10','200'

insert into test select 'd','10','300'

insert into test select 'e','11','250'

insert into test select 'e','12','100'

insert into test select 'f','12','150'

go

--测试

declare @sql varchar(8000)

set @sql='select model,'

select @sql=@sql+'sum(case when

date='''+cast(date as varchar(10))+''' then qty else 0 end)

['+cast(date as varchar(10))+'],'

from (select distinct top 100 percent  date

 from test order by date)a

set @sql =left(@sql,len(@sql)-1)+' from test group by model'

exec(@sql)

--删除测试环境
drop table test
 set nocount off

/**//*
model                8           9           10          11          12
-------------------- ----------- ----------- ----------- ----------- -----------
a                    10          0           50          0           0
b                    100         200         100         0           0
c                    0           0           200         0           0
d                    0           0           300         0           0
e                    0           0           0           250         100
f                    0           0           0           0           150
*/