Top Mobile OS by Session Duration

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, mid

Interview Prompt

Which mobile operating system has the highest average session duration? Show just the top OS and its average.

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