Event Count on Key Days
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 are sizing weekend capacity against the start of the work week, so we need the total number of events in `event_data` that fell on a Saturday, a Sunday or a Monday. Return each of those days as its weekday number alongside its event count.
Summary
Key days. Key event volumes.
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