The First Year

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

We want to spot the early adopters who came back after signing up, the ones who logged repeat sessions in their first year rather than a single one-time visit. Surface each such user's ID, signup date, and how many sessions fell inside that window.

Summary

Activated early. A good sign.

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