【】一行记录根据某字段拆分多行！
InPut：
Id ProductName SumCout
1 iPad2 2
2 iPhone5 3
OutPut：
Id ProductName Count
1 iPad2 1
1 iPad2 1
2 iPhone5 1
2 iPhone5 1
2 iPhone5 1
Ps:怎么解决，Help!
[解决办法]
--> 测试数据：[TB]
if object_id('[TB]') is not null drop table [TB]
GO
create table [TB]([Id] int,[ProductName] varchar(7),[SumCout] int)
insert [TB]
select 1,'iPad2',2 union all
select 2,'iPhone5',3
select t.[Id],t.[ProductName],[Count]=1 from [TB] t INNER JOIN [master].dbo.spt_values sv on t.SumCout>sv.number
WHERE sv.[type]='p'
/*
Id ProductName Count
----------- ----------- -----------
1 iPad2 1
1 iPad2 1
2 iPhone5 1
2 iPhone5 1
2 iPhone5 1
(5 行受影响)
*/
drop table [TB]
[解决办法]
with tb(id,name,sumcount)
as(
select 1,'iPad2',2 union all
select 2,'iPhone5',3)
select id,tb.name,1 sumcount from tb,master..spt_values where number between 1 and sumcount and type='p'
