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（本文来源于图老师网站，更多请访问http://www.tulaoshi.com/bianchengyuyan/）--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
（本文来源于图老师网站，更多请访问http://www.tulaoshi.com/bianchengyuyan/）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
*/
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