Unused Read Tokens

An easy SQL mock interview question on DataDriven, with an AI interviewer who asks follow-up questions and a hire or no-hire decision at the end.

Domain
SQL
Difficulty
easy
Seniority
L3

Interview Prompt

We're cleaning up API credentials, and before we purge the unused ones, how many read tokens in `api_tokens` have never been used?

Summary

Active tokens that nobody uses.

How This Interview Works

  1. Read the vague prompt (just like a real interview)
  2. Ask clarifying questions to the AI interviewer
  3. Write and run your SQL against a real database
  4. Answer the interviewer's follow-up questions, then get a hire or no-hire decision