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Mode of Small Team Costs

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
mid, senior

Interview Prompt

Among small teams (those with no more than 4 services), find the most common per-service cost amount. Show the single most frequent amount and how many times it appears.

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