示例:
+----+---------+
| Id | Email |
+----+---------+
| 1 | a@b.com |
| 2 | c@d.com |
| 3 | a@b.com |
+----+---------+
根据以上输入,你的查询应返回以下结果:
+---------+
| Email |
+---------+
| a@b.com |
+---------+
说明:所有电子邮箱都是小写字母。
# Write your MySQL query statement below
SELECT Email from Person Group by Email having count(Email)>1;
用时 | 内存 |
---|---|
击败57.06% | 击败100.00% |
来源:力扣(LeetCode) 链接:https://leetcode-cn.com/problems/duplicate-emails
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