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The Tag Order

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
L3

Interview Prompt

The data quality team is standardizing event metadata. For our signup events, return each event's ID alongside its tags normalized to lowercase.

Summary

Tags arrived in chaos. The system needs them in line.

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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