Campaign Click Rate
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
- L4
Interview Prompt
We run an ad platform and want to see how each campaign converts, but only among users we can confirm are active elsewhere on the site. Looking at people who also turn up in our page-view logs, find each campaign's clicked impressions as a percentage of its impressions, highest first.
Summary
Among engaged users, which campaigns landed.
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