update 182

Author: milangrahovac

182-duplicate_emails.sql

@@ -1 +1,22 @@
-182. Duplicate Emails
+-- 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.
+