Active Tokens on Target Date
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
- L3
Interview Prompt
The security team is auditing which owners held a live API token on November 1 of 2026. The status column is populated inconsistently by different services, so count a token as enabled only when its status reads exactly as the lowercase word 'active'; on top of that, a live token must have been issued before that date and not yet reached its expiration, with a missing expiration date treated as still valid. Return each qualifying owner once.
Summary
One specific day. Which tokens were still alive?
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