---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 decimalset @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,@thirdbirthdaySELECT @total=ISNULL(SUM(amount),0) FROM View_birthdayVipdlyList WHERE indate>@statbirthday AND  indate<@endbirthday and  vipno='654321'select @total*.01