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Services Hitting Cost Threshold

A hard SQL mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.

Domain
SQL
Difficulty
hard
Seniority
mid

Interview Prompt

For each month, calculate what percentage of services reached at least $100 in monthly cloud spend. Exclude rows where bill_date is null (cancelled billing entries). Return the month and percentage hitting the threshold.

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