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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
L4

Interview Prompt

Analytics wants to see each user's sessions ranked by engagement. Within each user, number their sessions from longest to shortest by session_duration_sec. Skip rows where session_duration_sec is NULL. Return the user_id, duration, and position number.

Summary

Longest sessions rise to the top. Within each user, a pecking order.

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

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