619. 只出现一次的最大数字 难度：简单

1、题目描述

来源：力扣（LeetCode）

2、解题思路

首先对每个数字出现次数统计select num,count(num) from my_numbers group by num having count(num)=1
然后找出最大的数字select max(num) as num

3、提交记录

select  max(num) as num
from(
select num,count(num)
from my_numbers
group by num
having count(num)=1) a

328ms