力扣——查找重复的电子邮箱(数据库的题

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] |
+---------+

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

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转载自www.cnblogs.com/JAYPARK/p/10289184.html