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Top Services by Uptime

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 SRE team maintains an uptime leaderboard. Rank services by average uptime, but only include services with at least 5 health checks. Tied services share the same rank with no gaps. Return the top 3 ranks, including ties. Round to 2 decimal places.

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