文件名称:分组求中位数
文件大小:1KB
文件格式:TXT
更新时间:2017-09-24 10:14:18
中位数
分组求中位数
select c.age,avg(r.AMOUNT) as AMOUNT
from
(select a.age ,a.AMOUNT,(select count(1) from testzhongweishu where age=a.age and (AMOUNT
文件名称:分组求中位数
文件大小:1KB
文件格式:TXT
更新时间:2017-09-24 10:14:18
中位数
分组求中位数
select c.age,avg(r.AMOUNT) as AMOUNT
from
(select a.age ,a.AMOUNT,(select count(1) from testzhongweishu where age=a.age and (AMOUNT