#6 Leetcode 176: Second Highest Salary - SQL Solution Explained

In this video, we solve Leetcode 176: Second Highest Salary using SQL. We go step by step through the problem statement, discuss different approaches, and demonstrate how to write an optimized SQL query to find the second-highest salary from a database table. The problem is simple but can be tricky if you're not familiar with SQL window functions and ranking techniques. We’ll explore using RANK(), and other SQL methods to tackle this problem efficiently. 🔑 Key Concepts: 1. SQL Window Functions 2. RANK(), and DENSE_RANK() 3. Setting Null if the number of rows are returned 0 4. Derived Tables : A derived table is essentially a subquery used in the FROM clause. It acts like a temporary table that is created during query execution and can be referred to later in the main query. 🔔 Don’t forget to like, share, and subscribe for more SQL problem-solving videos and tips! #Leetcode #SQL #SecondHighestSalary #SQLTutorial #LeetcodeSolutions #Database #SQLQuery #LearnSQL #TechInterview #CodingInterview #Leetcode 176