SQL Tutorial

Welcome to the SQL Tutorial. This guide is designed to help you understand the Structured Query Language (SQL) — the standard language used to interact with relational databases.

Whether you're an aspiring developer, a data analyst, or just someone curious about how databases work, this tutorial will give you the foundational skills needed to read, write, and execute SQL queries.

Throughout this tutorial, you’ll learn all the concept of SQL.

By the end, you’ll be able to work confidently with SQL and begin using it in real-world scenarios. No prior database experience is required — just a willingness to learn.

At this guild, we're using PostgresSQL. Other database engine may have a litter diff, but this tutorial will cover most perspective when working with SQL.

Let’s get started!