182. Duplicate Emails

来源:互联网 发布:java 线程 sleep 编辑:程序博客网 时间:2024/06/13 03:34

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.

Subscribe to see which companies asked this question.


SQL:

# Write your MySQL query statement belowselect     Emailfrom    Persongroup by    Emailhaving     count(Email) > 1;


0 0
原创粉丝点击