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iOS Sessions by Device Type

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

Domain
SQL
Difficulty
medium
Seniority
L3

Problem

The mobile analytics team is preparing a usage report and needs to know the total number of sessions initiated from devices where device_type is 'mobile'. Return the device type and its session count.

Summary

iOS engagement, 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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