Tenure Spread for Active Tokens
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
- L4
Interview Prompt
Security wants the tenure profile of every API token still in service. A token is in service if it has no expiration date or its expiration is today or later. Across that population, report how many days separate the oldest and newest tokens, how many tokens were issued on that earliest day, and how many were issued on that latest day.
Summary
Tenure extremes among active tokens.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your sql solution with real code execution
- Get instant feedback and a hire/no-hire decision