Inactive Users in Date Range

A medium 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
medium
Seniority
L4

Interview Prompt

The data quality team flagged stale records in a dimension table. Find the users who had zero sessions between June 1 and July 1, 2026, returning their usernames.

Summary

Ghost accounts. Active signup, zero sessions.

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