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The SQL Basics course starts with simple queries performed on a single table. These exercises will show you how to retrieve exactly what you need. Next, you’ll start working with multiple tables. You will find out about the ... If you want to learn SQL basics in a week, look no further than our SQL Basics course. Let's break down this course to show you why it's the right choice: 1. Time Breakdown. We estimate this course takes about 10 hours to complete, so you can easily do this course in a week and still have the weekend to relax! 2.Dec 9, 2021 · SQL (Structured Query Language) is a popular programming language used for relational databases. And there are many good free resources you can use to start learning it. In this article, I will list out 8 free online beginner-friendly resources to learn SQL, PostgreSQL, and MySQL. Free SQL Courses 1. SQL is a programming language that you can use to manage relational databases. 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