sql月，年，统计报表sql报表

 select
       DevName as 设备名称,
       count(flux) as 流量数据个数,
       max(flux) as 流量最大值,
       min(flux) as 流量最小值,
       avg(flux) as 流量平均值,
       count(Flux_AV)  as 流速数据个数,
       max(Flux_AV) as 流速最大值,
       min(Flux_AV) as 流速最小值,
       avg(Flux_AV) as 流速平均值
 from realtime
 where
      year(savetime)=''
      and month(savetime)=''
 GROUP BY DevName,
       datepart(yy,savetime),
       datepart(mm,savetime)