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182.Duplicate Emails
182.Duplicate Emails
难度:Easy
SQL架构 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] | +---------+ 说明：所有电子邮箱都是小写字母。 代码：
# Write your MySQL query statement below
select Email from Person group by Email having count(Email)>1;