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The Dormant Accounts

A easy SQL mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.

Domain
SQL
Difficulty
easy
Seniority
junior, mid, senior

Interview Prompt

Given customers, user_sessions, and transactions tables, write a query to find paying customers who have not logged in for over 90 days. Return each customer's subscription tier, last login date, and total lifetime spend.

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