Write a SQL query to find all duplicate emails in a table named Person.
+----+---------+ | Id | Email | +----+---------+ | 1 | [email protected] | | 2 | [email protected] | | 3 | [email protected] | +----+---------+
For example, your query should return the following for the above table:
+---------+ | Email | +---------+ | [email protected] | +---------+
Note: All emails are in lowercase.
Companies:
Adobe
# OJ: https://leetcode.com/problems/duplicate-emails/
# Author: github.com/lzl124631x
select Email from
(
select Email, count(Email) as num
from Person
group by Email
) as statistic
where num > 1# OJ: https://leetcode.com/problems/duplicate-emails/
# Author: github.com/lzl124631x
select Email
from Person
group by Email
having count(Email) > 1;