Platform Check
An easy SQL mock interview question on DataDriven, with an AI interviewer who asks follow-up questions and a hire or no-hire decision at the end.
- Domain
- SQL
- Difficulty
- easy
- Seniority
- L3
Interview Prompt
The QA team is profiling performance regressions and wants to know which device and operating system each unusually long session ran on. For every such session, return the user, the device type, the operating system, and how long the session lasted.
Summary
When a session drags on, the platform it ran on is the first suspect.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write and run your SQL against a real database
- Answer the interviewer's follow-up questions, then get a hire or no-hire decision