Introduction
In this challenge, we'll use a MySQL database to create tables and insert data. Our primary goal is to retrieve the level information of all users by querying data using a left outer join.
This is a Challenge, which differs from a Guided Lab in that you need to try to complete the challenge task independently, rather than following the steps of a lab to learn. Challenges are usually a bit difficult. If you find it difficult, you can discuss with Labby or check the solution.
