Month: September 2025

Method 1: Using LIMIT (MySQL, PostgreSQL) Explanation: Method 2: Using Subquery (Works in most databases) Explanation: Method 3: Using DENSE_RANK() (SQL Server, Oracle, PostgreSQL) Explanation: For interviews, Method 2 (Subquery) and Method 3 (Window Function) are the most commonly asked.

If you are learning SQL, you might come across the term trigger. A trigger in SQL is a special type of stored procedure that automatically executes or fires when certain events occur in a database table, such as INSERT, UPDATE, or DELETE operations. Triggers are very useful for maintaining data integrity, automatically updating related tables, … Read more