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A easy SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.

Domain
SQL
Difficulty
easy
Seniority
L3

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.

Summary

Session length, device by device.

Practice This Problem

Solve this SQL problem with real code execution. DataDriven runs your SQL queries against a real database and grades it automatically.

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