Welcome to your interview.
The question is on your right: Optimized SQL for Large Data. 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 (7/10 or better passes). Discussion and graded submissions share your five interviewer interactions, so spend them well.
What databases have you worked with, and how do you write optimized SQL queries to extract large-scale data?