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From users, return COUNT(*) as total_rows and COUNT(age_bucket) as non_null_ages on one row.

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

From users, return COUNT(*) as total_rows and COUNT(age_bucket) as non_null_ages on one row.

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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