编写一个 SQL 查询,查找 Person 表中所有重复的电子邮箱。 示例: +----+---------+ | Id | Email | +----+---------+ | 1 | [email protected] | | 2 | [email protected] | | 3 | [email protected] | +----+---------+ 根据以上输入,你的查询应返回以下结果: +---------+ | Email | +---------+ | [email protected] | +---------+ 来源:力扣(LeetCode) 链接:https://leetcode-cn.com/problems/duplicate-emails 著作权归领扣网络所有。商业转载请联系官方授权,非商业转载请注明出处。
# Write your MySQL query statement below select email from person group by email having count(email)>1
原文地址:https://www.cnblogs.com/xiaoshahai/p/12166056.html
时间: 2024-11-08 15:08:11