sql统计月份

A. SQL如何按年份月份统计

select left(convert(varchar(10),[datetime],120),7) as 月份,sum(Amount) as 总数
from 表
where [datetime]<='你输入的时间条件'
group by left(convert(varchar(10),[datetime],120),7)

根据你的数据结果格式重新修改了下:

select cast(datepart(year,[datetime]) as varchar)+'年'+cast(datepart(month,[datetime]) as varchar)+'月' as 月份,sum(Amount) as 总数

from 表

where [datetime]<='你输入的时间条件' and datepart(year,[datetime])=left('你输入的时间条件',4)

group by cast(datepart(year,[datetime]) as varchar)+'年'+cast(datepart(month,[datetime]) as varchar)+'月'