Braintree Analytics Coding Challenge With SQL

"Welcome to the Braintree Analytics Code Challenge! This is an opportunity for you to show us your grasp of SQL which plays a key role in the day-to-day job that you're applying for." These were the first lines of the file of a GitHub repository I found and it piqued my interest because it was exactly what I was looking for, a challenge to flex my newly built SQL muscles so, I set forth to complete the challenge.

Here is the link to the GitHub repo with more information on the challenge, challenge questions, instructions and guidelines for participating in the challenge.

Here is the link to my submission showing the queries used and my approach to solving the challenge questions.