The Switchboard
A medium SQL mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- 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 your sql solution with real code execution
- Get instant feedback and a hire/no-hire decision