Who Comes Early
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
We record each user's signup date and want to compare the year-opening intake from one year to the next. Count the users who signed up during that opening stretch of each year, earliest year first.
Summary
Every year opens with a wave of new names. See how the first seven months compare.
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