SQL stands for Structured Query Language. This tutorial will give you a quick start to SQL. It covers most of the topics required for a basic understanding of SQL and to get a feel of how it works.

Basic-to-Advanced SQL exercises that serve as a study guide for learners and cheat sheet for future reference. - juanleston/SQL-Learning-Tutorial ...

In this tutorial, we will step through installing PostgreSQL, connecting to the database, loading some data, and running a variety of SQL queries.