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Average Session Duration by Device

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

Domain
SQL
Difficulty
easy
Seniority
junior

Interview Prompt

Mobile users report shorter, more frustrating sessions than desktop users, and the product team wants data to back that up. Show the average session duration broken down by device type.

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