Loading interview...

Cloud Cost Trend Analysis

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 FinOps team is looking for services with volatile billing. For each service, show each billing period's cost alongside the change from the previous period (current minus previous). The first record for each service should show a null change. Order by service name and billing date.

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