Double Vision
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
Ahead of a CRM migration, the data quality team is hunting for email addresses entered against more than one account. For each such email, return the address, how many accounts carry it, and the earliest and most recent signup dates, most-repeated first.
Summary
Before the records move, the ones wearing the same name twice have to surface.
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