Most Popular Signup Day
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
The growth team is scheduling promotional pushes and wants to amplify the days that already pull the most organic signups. Show each day of the week with its signup count, from the most signups down to the fewest.
Summary
One day of the week wins on signups.
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