Your question is Customer Decision Analysis with SQL. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Interviewers often ask this question to assess whether you can turn raw data into a clear recommendation, not just write queries. They want to hear how you framed the problem, analyzed the data, and influenced a customer decision.
Describe a recent project where you used SQL-based data analysis to help a customer make a decision. In your answer, explain:
Keep the answer practical and structured. The interviewer is not looking for advanced database theory here. They want to hear a concise example showing basic SQL skills such as filtering, grouping, aggregation, and simple date-based analysis, plus your ability to communicate insights clearly to a non-technical stakeholder.