Logicalis SpainMediumSQL & Data Manipulation00:00

Welcome to your interview for the Data Analyst role at Logicalis Spain.
The question is on your right: Structuring Complex SQL Joins. Take a moment with it first.
Talk your thinking through with me if you like - when you're confident, submit your answer and I'll grade it like a real screen. You have three graded attempts to score 7/10 or better.
How do you approach structuring a complex SQL query when joining multiple large tables with mismatched keys?