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给定日期是当年的第几周-给定日期所在月第一天是当年的第几周 SELECT DATEPART(WEEK,@Date)-DATEPART(WEEK,DATEADD(MONTH,DATEDIFF(MONTH,0,@Date),0))+1 [WeekOfMonth] SELECT DATEPART(WEEK,@Date)-DATEPART(WEEK,DATEADD(DAY,1-DATEPART(DAY,@Date),@Date))+1 [WeekOfMonth] GO