---2013年10月9日生日，就以2012年9月1日至2013年8月31日計算 (因為係生日月份前兩個月之最後一天為結算日)

DECLARE @birthday  datetime,@now  datetime,@stat datetime,@end datetime,@statbirthday datetime,@endbirthday datetime,@thirdbirthday datetime,@firthbirthday datetime, @year int,@month int , @day int,@str varchar(20),@total decimal

set @now=getdate()

set @year=Year(getdate())

set @birthday='1992-10-14'

set @month=month(@birthday)

set @day=day(@birthday)

set @str=cast(@year as varchar(4))+'-'+cast(@month as varchar(2))+'-'+cast(@day as varchar(2))

set @birthday=cast(@str as datetime)

--會員生日有效生首日起至3個月內有效

set @firthbirthday=DATEADD(mm, DATEDIFF(mm,0,@birthday), 0)  --当月的第一天

set @thirdbirthday=DATEADD(ms,-3,DATEADD(mm, DATEDIFF(m,0,getdate())+3, 0)) --上三个月最后的一天

set @statbirthday=DATEADD(mm, DATEDIFF(mm,0,@birthday)-13, 0)

set @endbirthday=DATEADD(ms,-3,DATEADD(mm, DATEDIFF(m,0,@birthday)-1, 0))

select @statbirthday,@endbirthday,@firthbirthday,@thirdbirthday

SELECT @total=ISNULL(SUM(amount),0) FROM View_birthdayVipdlyList WHERE indate>@statbirthday AND  indate<@endbirthday and  vipno='654321'

select @total*.01