Upvote Percentage by Age Cohort

A hard SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.

Domain

SQL

Difficulty

hard

Seniority

L5

Problem

The search team is comparing search success between brand-new and tenured users. A user counts as 'new' if their signup is within 30 days of the most recent signup on file; everyone else is 'existing'. A search counts as successful when the user clicked through to a result. For each segment, show the segment label, total searches, successful searches, and the success rate as a decimal. Sort alphabetically by segment.

Summary

New users versus existing. The upvote gap.

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