Signups by Age Bucket Since April

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

Each row of `users` is one account, stamped with its `signup_date` and an `age_bucket`. The spring signup wave is every account created on or after April 1, 2026; return each age bucket in that wave alongside its number of signups as `user_count`.

Summary

Recent signups by age.

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