From a718cc33c7c5ab129b5ade803e6bb18a9f27ec21 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Jos=C3=A9=20Antonio=20Chac=C3=B3n=20Guti=C3=A9rrez?= <138903866+joseantoniochacon@users.noreply.github.com> Date: Tue, 25 Jun 2024 19:19:03 -0600 Subject: [PATCH] Create README - LeetHub --- 0182-duplicate-emails/README.md | 41 +++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 0182-duplicate-emails/README.md diff --git a/0182-duplicate-emails/README.md b/0182-duplicate-emails/README.md new file mode 100644 index 0000000..9a7036f --- /dev/null +++ b/0182-duplicate-emails/README.md @@ -0,0 +1,41 @@ +

182. Duplicate Emails

Easy


SQL Schema

Table: Person

+ +
+-------------+---------+
+| Column Name | Type    |
++-------------+---------+
+| id          | int     |
+| email       | varchar |
++-------------+---------+
+id is the primary key (column with unique values) for this table.
+Each row of this table contains an email. The emails will not contain uppercase letters.
+
+ +

 

+ +

Write a solution to report all the duplicate emails. Note that it's guaranteed that the email field is not NULL.

+ +

Return the result table in any order.

+ +

The result format is in the following example.

+ +

 

+

Example 1:

+ +
Input: 
+Person table:
++----+---------+
+| id | email   |
++----+---------+
+| 1  | a@b.com |
+| 2  | c@d.com |
+| 3  | a@b.com |
++----+---------+
+Output: 
++---------+
+| Email   |
++---------+
+| a@b.com |
++---------+
+Explanation: a@b.com is repeated two times.
+
+
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