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Show each log's ID, an effective level (replace 'INFO' with 'DEFAULT' using NULLIF and COALESCE), an

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

Interview Prompt

Show each log's ID, an effective level (replace 'INFO' with 'DEFAULT' using NULLIF and COALESCE), and server name

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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