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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
mid

Interview Prompt

The infra team needs to plan CDN capacity by time of day. Calculate average net bytes per request (gross bytes minus 5% overhead) broken down by day of the week (as text, e.g. 'Monday') and hour. Round to 2 decimal places. Return the weekday name, hour, and average net bytes.

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