Tutorial - Beginner thevalleyofcode.com
The goal of this handbook is to get you up and running with SQL, starting from zero knowledge.
You will learn the terms and the main ideas, what is a DBMS, how to structure a database, how to insert data into it, how to query the database.
I will only teach you the basics, and once you’re done with this you’ll have the knowledge you need to dive deeper.
I called this “SQL Handbook” but I assume zero database knowledge, so I’m first going to give you an introduction to databases, in particular relational databases.