The Transaction Breakdown

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
L4

Interview Prompt

We're building an exec dashboard tile that shows how transaction volume is accelerating. Produce a single-row snapshot with the transaction count over the last 30 days, the last 180 days, and all-time.

Summary

Multiple time windows. One query. The business wants all of it at once.

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