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Transaction Share of User Spend

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
L4

Interview Prompt

A transactions table records each purchase, and every transaction belongs to a user. For each transaction, return its ID, the user's name, the amount, and that amount as a share of everything that user has ever spent.

Summary

Each transaction's share of the whole.

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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