‘壹’ 我想找sql中位数最多最大的ID
你的id字段是varchar类型的吧？
位数是用len函数，比如：Select len('123')等于3
应该如果id全是数字，可以用：select max(cast(id as int)) from 表
‘贰’ oracle数据库中中位数用sql的求法。菜鸟求高手解答
--1
select median (sales) from total_sales
--2
select avg(sales)
from (select row_number() over(order by sales) as rn, name, sales from total_sales) t,
(select count(*) / 2 as mid_c from total_sales) b
where rn = b.mid_c
or rn = trunc (b.mid_c+1)
‘叁’ SQL 2008中位数怎么求
declare @str varchar(100)
set @str='1，2，3，4，5，6，7，8，9，0'
select len(@str)
‘肆’ 如何使用简单的SQL查询在MySQL中计算中位数
第五十九回许褚裸衣斗马超曹操抹书间韩遂第六十回张永年反难杨修庞士元议取西蜀
‘伍’ SQL + ORACLE + 中位数 在线等
create proc test1
as
declare @a int
select @a=count(*) from m
if @a%2=1
begin
select xm from (select xm,zkzh,count(*) k from(select i.xm,i.zkzh from m i ,m where i.xm>=m.xm)as l group by xm,zkzh )as q where k=((@a+1)/2)
end
if @a%2=0
begin
select avg(xm) xm from (select xm,zkzh,count(*) k from(select i.xm,i.zkzh from m i ,m where i.xm>=m.xm)as l group by xm,zkzh )as q where k in(@a/2,(@a+2)/2)
end
go
haiyoudian wenti.....
‘陆’ impala sql如何取中位数
中位数函数:percentile
近似中位数函数:percentile_approx
转载于网页链接
‘柒’ sql怎么计算中位数
众数：count()行数后取max值
平均数：avg()
中位数：(max()+min())/2
‘捌’ SQL语句分组求中位数。数据和所需结果如图。
select ppid,ycljh,avg(jp) as jp from table
group by ppid,ycljh