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Busiest Route by Passenger Volume

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
Seniority
L4

Interview Prompt

Count click events (clicked = 1) per date for Friday impressions (day-of-week 5), restricted to users who have posted at least once in chat_msgs. Return the date (YYYY-MM-DD) and the count, sorted by date ascending.

Summary

The busiest route by volume.

How This Interview Works

  1. Read the vague prompt (just like a real interview)
  2. Ask clarifying questions to the AI interviewer
  3. Write your sql solution with real code execution
  4. Get instant feedback and a hire/no-hire decision

Related

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