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Push Notification Status Pivot
A medium SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.
- Domain
- SQL
- Difficulty
- medium
- Seniority
- mid
Problem
Our push notification system logs delivery outcomes per user. For registered users only, pivot their notification counts into separate columns for delivered, opened, and failed. Return user ID and the three counts.
Practice This Problem
Solve this SQL problem with real code execution. DataDriven runs your SQL queries against a live PostgreSQL database and grades it instantly.