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sqlserver一个动态交叉表的范例

 2008-12-15 10:16:45 来源:WEB开发网   
核心提示:社区问的人太多了,保存一个备用--建立测试环境set nocount oncreate table test(model varchar(20),date int ,qty int)insert into test select 'a','8','10'insert in

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
*/

Tags:sqlserver 一个 动态

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