用sql语句按周、按月、按季、按年统

原文地址：http://hi.baidu.com/%BD%F0%D3%F1kl_y/blog/item/1c368ffba9388476024f5645.html

--按mySql语法统计按周,月,季,年。income为合计的价格字段，createDate为交易时间。
select sum(income)as revenue,week(createDate) as week,month(createDate) as month,
quarter(createDate)as quarter,year(createDate)as year from employee
where year(createDate) >= '' group by
week(createDate),month(createDate),quarter(createDate),year(createDate)

--sqlserver2005语法统计按周,月,季,年。
--按日
--select sum(price),day([date]) from table_name where year([date]) =
'' group by day([date])
--按周quarter
select sum(price),datename(week,price_time) from ble_name where
year(price_time) = '' group by datename(week,price_time)
--按月
select sum(price),month(price_time) from ble_name where year(price_time)
= '' group by month(price_time)
--按季
select sum(price),datename(quarter,price_time) from ble_name where
year(price_time) = '' group by datename(quarter,price_time)
--按年
select sum(price),year(price_time) from ble_name where
year(price_time) >= '' group by year(price_time)