The Fast Lane

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
L3

Interview Prompt

The data platform team is benchmarking the pipelines that finish fast, those that complete inside a 45-minute window (2700 seconds). For each of those pipelines, find the average rows output.

Summary

Only the quick runs make the cut. Measure what they move.

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