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Kings of the Calendar

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

Domain
SQL
Difficulty
hard
Seniority
L4

Interview Prompt

We publish a monthly leaderboard of the best-selling products for an online marketplace, where a product's monthly selling is its total units sold in that calendar month. For each month, return the leading products with their total units sold and standing.

Summary

Every month has a winner.

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

Related

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