Active User Revenue for April

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

Each row in `transactions` records a purchase's `quantity` and `total_amount`, and a purchase's revenue is the two multiplied together. Return the total revenue from April 2026 purchases made by users whose account in `users` is active.

Summary

Total revenue from active users in a single month

How This Interview Works

  1. Read the vague prompt (just like a real interview)
  2. Ask clarifying questions to the AI interviewer
  3. Write and run your SQL against a real database
  4. Answer the interviewer's follow-up questions, then get a hire or no-hire decision