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Most Profitable Region Month

A medium SQL mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.

Domain
SQL
Difficulty
medium
Seniority
mid, senior

Interview Prompt

The finance team needs the single most profitable region-month combination in 2026. For each region, sum profit by transaction month, matching orders to transactions by their ID modulo 100. Return whichever region and month came out on top.

How This Interview Works

  1. Read the vague prompt (just like a real interview)
  2. Ask clarifying questions to the AI interviewer
  3. Write your sql solution with real code execution
  4. Get instant feedback and a hire/no-hire decision