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Consecutive Cost Growth Periods

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
L5

Interview Prompt

Find periods where total cloud spending increased for 2 consecutive billing periods. Return the starting bill date of each growth streak and its length.

Summary

Five straight months of spending increases.

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

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