182. 查找重复的电子邮箱

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力扣

Problem

编写一个 SQL 查询，查找 Person 表中所有重复的电子邮箱。

示例 1：

+----+---------+
| 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] |
+---------+
说明：所有电子邮箱都是小写字母。

Solution

MySQL

# Write your MySQL query statement below
select Email from Person
group by Email
having count(Email)>1