task: #1517

README.md

@@ -61,6 +61,7 @@ Have a good contributing!
     - [1378. Replace Employee ID With The Unique Identifier](./leetcode/easy/1378.%20Replace%20Employee%20ID%20With%20The%20Unique%20Identifier.sql)
     - [1407. Top Travellers](./leetcode/easy/1407.%20Top%20Travellers.sql)
     - [1484. Group Sold Products By The Date](./leetcode/easy/1484.%20Group%20Sold%20Products%20By%20The%20Date.sql)
+    - [1517. Find Users With Valid E-Mails](./leetcode/easy/1517.%20Find%20Users%20With%20Valid%20E-Mails.sql)
     - [1527. Patients With a Condition](./leetcode/easy/1527.%20Patients%20With%20a%20Condition.sql)
     - [1581. Customer Who Visited but Did Not Make Any Transactions](./leetcode/easy/1581.%20Customer%20Who%20Visited%20but%20Did%20Not%20Make%20Any%20Transactions.sql)
     - [1587. Bank Account Summary II](./leetcode/easy/1587.%20Bank%20Account%20Summary%20II.sql)

leetcode/easy/1517. Find Users With Valid E-Mails.sql

@@ -0,0 +1,32 @@
+/*
+Question 1517. Find Users With Valid E-Mails
+Link: https://leetcode.com/problems/find-users-with-valid-e-mails/description/?envType=study-plan-v2&envId=top-sql-50
+
+Table: Users
+
++---------------+---------+
+| Column Name   | Type    |
++---------------+---------+
+| user_id       | int     |
+| name          | varchar |
+| mail          | varchar |
++---------------+---------+
+user_id is the primary key (column with unique values) for this table.
+This table contains information of the users signed up in a website. Some e-mails are invalid.
+
+
+Write a solution to find the users who have valid emails.
+
+A valid e-mail has a prefix name and a domain where:
+
+The prefix name is a string that may contain letters (upper or lower case), digits, underscore '_', period '.', and/or dash '-'. The prefix name must start with a letter.
+The domain is '@leetcode.com'.
+Return the result table in any order.
+*/
+
+SELECT 
+    user_id,
+    name, --noqa: RF04
+    mail
+FROM Users
+WHERE mail ~ '^[a-zA-Z]+([a-zA-Z0-9]?[._-]?[a-zA-Z0-9]?)*@leetcode\.com$'