The Budget Line

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
L5

Interview Prompt

Our cloud bill lands as individual cost lines in `cloud_costs`, and budgets as allocation lines per service and region in `cost_allocs`. Show each cost line beside the allocation lines for its own service and region, with its service, region, actual cost, budget, and a flag of 'over', 'under' or 'on_target'.

Summary

Some rows are over. Some are under. Label every one.

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