Daily SQL and Python Challenges for Data Engineers
Daily Data Engineering Challenge - 2026-05-14
A fresh SQL and Python challenge every day. Practice data engineering skills with adaptive difficulty that matches your level. Track your accuracy, build streaks, and find your weak spots.
Today's SQL Challenge: Top Per Category
Editorial wants to feature the top-rated product in every category. Within each category, find the product(s) with the highest rating and include all ties. Skip products with no rating. Return the product_name, category, and rating.
Today's Python Challenge: Value Count
Given a list and a target value, return the count of list elements equal to target.