Platform Check

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

Domain

SQL

Difficulty

easy

Seniority

L3

Problem

The QA team is profiling performance regressions and wants to see which device and operating system combinations produce the longest user sessions. For each session, show the user ID, device type, operating system, and session duration. Only include sessions that lasted longer than one thousand seconds.

Summary

OS and device combos. Which sessions last longest?

Practice This Problem

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