The Switchboard
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
- L3
Interview Prompt
A feature-flag service writes a new record every time a flag is switched on or off, so one flag can appear many times with different settings. For each flag, give its current state as two indicators: a 1/0 for whether it is enabled and a 1/0 for whether it is disabled.
Summary
On or off. Every flag at a glance.
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