Deduplication with ROW_NUMBER — Practice Questions
3 free PYSPARK and SQL challenges on Deduplication with ROW_NUMBER, auto-graded in the browser. Each states the problem, shows the input and expected output, and explains the answer.
- Deduplicate User Login Sessions — Medium · SQL · +100 XP
- Remove Duplicate Customer Records — Medium · SQL · +110 XP
- Remove Duplicate Customer Records (PySpark) — Medium · PYSPARK · +110 XP