sqlserver一个动态交叉表的范例

社区问的人太多了，保存一个备用


--建立测试环境


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


*/