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 needs to identify which token owners had a live API token on November 1, 2026. A token is considered live on that date if its status is 'active', it was issued before that date, and it had not yet expired. Tokens with no expiration date should be treated as still valid. Return a deduplicated list of owner IDs.
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