SQL and Databases - A Full Course for Beginners

SQL for Beginners Tutorial

The Complete Beginner’s Guide to SQL Fundamentals

💡 SQL Interview Question: 👉 How do you find the Nth Highest Salary in a table? (Super important for SQL Backend Java interviews!) Here’s the clean SQL query 👇 ✅ Using LIMIT (MySQL) SELECT DISTINCT salary FROM employees ORDER BY salary DESC LIMIT N-1, 1; ✅ Using OFFSET (PostgreSQL / SQL Server) SELECT DISTINCT salary FROM employees ORDER BY salary DESC OFFSET N-1 ROWS FETCH NEXT 1 ROW ONLY; ✅ Using Subquery (Works in All Databases) SELECT salary FROM employees e1 WHERE N-1 = ( SELECT COUNT(DIS

SSRS CountDistinct and Previous Functions

Learn to write basic SQL Queries

Microsoft SQL for Beginners

What is SQL? Learn SQL Basics, SQL Full Form & How to Use