182. Duplicate Emails
Write a SQL query to find all duplicate emails in a table named Person.
+----+---------+
| Id | Email |
+----+---------+
| 1 | a@b.com |
| 2 | c@d.com |
| 3 | a@b.com |
+----+---------+
For example, your query should return the following for the above table:
+---------+
| Email |
+---------+
| a@b.com |
+---------+
Note: All emails are in lowercase.
在一个名为Person的表中查找所有重复的电子邮件。
MySQL(1156ms):
1 # Write your MySQL query statement below 2 SELECT Email 3 FROM Person 4 GROUP BY Email 5 HAVING COUNT(*) > 1 ;
