/*------------------------------------------ over子句只能用于select和order by 查询阶段，且只能和聚合函数和排名函数(譬如row_number(),dense_rank()) 配合使用 over子句中只包含两种语法,over(partition by userid order by userid),partition by 和order by partition by 用于分组，具体用法见下面的例子 order by 用于和排名函数配合使用时，按照什么排名顺序来进行分配序号 ------------------------------------------*/ ---用于聚合函数 select userid,deptid,remitspan,askspan,outspan,(remitspan+askspan+outspan) as totalvalue ,sum(remitspan+askspan+outspan) over(partition by deptid) as teamvalue ,sum(remitspan+askspan+outspan) over() as alltotal from overtest
