Friday Spending Analysis
A hard SQL mock interview question on DataDriven, with an AI interviewer who asks follow-up questions and a hire or no-hire decision at the end.
- Domain
- SQL
- Difficulty
- hard
- Seniority
- L3
Interview Prompt
The finance team is tracking how Friday spending moves through the first quarter. From `transactions`, where each row is one purchase, report the average Friday `total_amount` for each week, with the week as an integer.
Summary
Friday spending during Q1.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write and run your SQL against a real database
- Answer the interviewer's follow-up questions, then get a hire or no-hire decision