Imagine spotting a bug that 90% of hunters miss — just because you knew the right SQL trick.

Ever feel like other bug bounty hunters are finding critical SQL injection (SQLi) flaws while you’re left empty-handed? It’s rarely about fancy tools. Often, it’s about a deep understanding of the language you’re attacking: SQL.

Mastering a core set of SQL commands is the superpower that separates beginners from seasoned hunters. This guide will give you that power. We’ll start with the absolute basics, move into practical practice, and then dive into the advanced commands you’ll actually use in the field.

Let’s turn you into a SQLi sniper.

🖥️ Platforms & Software for SQL Practice

Before learning SQL, you need a safe environment to practice. Here are some beginner-friendly options:

• SQLite — lightweight, portable, and doesn’t require a server.
• MySQL / MariaDB — widely used in web apps, great for practical exposure.
• PostgreSQL — powerful and feature-rich, commonly used in production systems.