Same-Day Session and Transaction Correlation
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
- L4
Interview Prompt
We run an e-commerce platform and want to profile the customers who both browse and buy. For each user who has at least one session and at least one purchase, show how many days they visited the site, how many purchases they made, and their average purchase value.
Summary
Same day session and purchase. Connected?
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