Understand MySQL DDL, DML, and DCL commands with real-world examples. Perfect tutorial for beginners to understand database operations easily.
Learn the key differences between DELETE and TRUNCATE commands in MySQL with examples. Understand how they affect table data, performance and auto-increment values.
Write different MySQL queries to get the second-highest salary from a database table. You can see a generic query to get nth highest salary.
Write your MySQL query, you can use a single table or join multiple tables and get the query output into a CSV file using phpMyAdmin.
Write SQL queries to find and remove duplicate rows in a table in MySQL. Use GROUP BY with HAVING clause to identify and delete them.