Return on a Glance
An easy 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
- easy
- Seniority
- L3
Interview Prompt
The marketing analytics team is benchmarking every ad campaign on how much each impression earns. For each campaign, give the number of impressions it served and its revenue per impression, from the best earners down.
Summary
Every impression costs something. Find the campaigns earning it back.
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