Two Names on the Ledger
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
Finance is reconciling revenue for two customers, alice and aaron42, and wants to see how their spend stacks up across both accounts, one transaction at a time. Return each transaction's ID, the customer, its amount, and the combined revenue accumulated through it.
Summary
Two accounts. One ledger. Watch the spend stack up.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write and run your SQL against a real database
- Answer the interviewer's follow-up questions, then get a hire or no-hire decision