Top Campaign by Opens
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
- L4
Interview Prompt
Our push notification system tracks opens per campaign. Find which campaign drove the most opens. An 'open' counts when the opened flag is true. If campaigns are tied at the top, show all of them.
Summary
One campaign got all the opens.
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