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Node Utilization

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

Interview Prompt

The capacity planning team is hunting for overloaded nodes against their regional baseline. In infra_nodes, compute the average cpu_pct per region (skipping NULL cpu_pct), then find nodes whose cpu_pct exceeds their own region's average. Within each region rank those nodes sorted from highest cpu_pct to lowest with ties sharing a position. Return the hostname, region, cpu_pct, regional average, and position.

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