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Average Session Duration by Device
A easy SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.
- Domain
- SQL
- Difficulty
- easy
- Seniority
- junior
Problem
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.
Practice This Problem
Solve this SQL problem with real code execution. DataDriven runs your SQL queries against a live PostgreSQL database and grades it instantly.