From user_sessions, return EXTRACT(HOUR FROM CAST(session_start AS TIMESTAMP)) AS hour_of_day and CO
A medium SQL mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- SQL
- Difficulty
- medium
Interview Prompt
From user_sessions, return EXTRACT(HOUR FROM CAST(session_start AS TIMESTAMP)) AS hour_of_day and COUNT(*) AS sessions. Group and order by hour_of_day.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your sql solution with real code execution
- Get instant feedback and a hire/no-hire decision