Mysql删除重复项：力扣196. 删除重复的电子邮箱

题目链接：196. 删除重复的电子邮箱 - 力扣（LeetCode）

题目描述

sql语句

# Write your MySQL query statement below
delete a
from person as a inner join person as b
where a.email = b.email and a.id > b.id

思路：内连接形成笛卡尔积