The Weight of Things

A medium 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
medium
Seniority
mid

Interview Prompt

An analyst tracking where 2026 spend concentrates wants each product category's revenue and its share of the total, biggest categories first. Work from `transactions` and `products`.

Summary

Every category claims part of the year. Find where it gathers.

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