业务分析：hive下的分组求占比情况

 在业务中与见一个占比情况，做了一个小demo，以供自己参考

元数据：

 

实现的形式

#方式一
with demo as (
select cookieid as cookieid,
pv as pv,
sum(pv) over() as total,
pv/sum(pv) over() percent
from pv_web
)
select cookieid,sum(pv),concat(round(sum(percent)*100,2),'%') from demo group by cookieid

#方式二
select s2.cookieid,s2.aa,sum(s2.aa) over() as  bb
from(
select s1.cookieid,sum(s1.pv) as aa
from pv_web s1
group by s1.cookieid
) s2


#方式三：
with demo as (
s