使用SQL按日、周、月、年方式來統計數據

如: 

表:consume_record 

字段:consume (money類型) 

date (datetime類型) 

 

請問怎麼寫四條sql語句分別按日,按周,按月,按季統計消費總量. 

如:1月 1200元 

2月 3400元 

3月 2800元 

 

--按日 

select sum(consume),day([date]) from consume_record where year([date]) = '2006' group by day([date]) 

 

--按周quarter 

select sum(consume),datename(week,[date]) from consume_record where year([date]) = '2006' group by datename(week,[date]) 

 

--按月 

select sum(consume),month([date]) from consume_record where year([date]) = '2006' group by month([date]) 

 

--按季 

select sum(consume),datename(quarter,[date]) from consume_record where year([date]) = '2006' group by datename(quarter,[date]) 

 

 

 

--指定日期你就看上面的例子變通下呀，無非就是一個聚合函數和Group by 

 

select [date],sum(consume) from consume_record where [date] between '2006-06-01' and '2006-07-10' group by [date]