Leetcode SQL 50 (Portal 🚪)

This is a portal for my walkthroughs of SQL 50 on Leetcode

Link of Leetcode SQL 50

Select
1757. Recyclable and Low Fat Products
584. Find Customer Referee
595. Big Countries
1148. Article Views I
1683. Invalid Tweets

Basic Joins
1378. Replace Employee ID With The Unique Identifier
1068. Product Sales Analysis I
1581. Customer Who Visited but Did Not Make Any Transactions
197. Rising Temperature

Advanced String Functions / Regex / Clause
1667. Fix Names in a Table
1527. Patients With a Condition
196. Delete Duplicate Emails
176. Second Highest Salary
1484. Group Sold Products By The Date
1327. List the Products Ordered in a Period
1517. Find Users With Valid E-Mails