Click Rate
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
The marketing team is auditing ad campaign performance before next quarter's budget allocation. For each campaign, they want to see the click-through rate as a percentage of impressions, the total revenue attributed to the campaign, and how many impressions were served. Only surface campaigns with more than one in five impressions resulted in a click , anything below that isn't worth renewing. Rank from highest click-through rate to lowest.
Summary
Campaigns nobody clicks.
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