Daily SQL and Python Challenges for Data Engineers
Daily Data Engineering Challenge - 2026-09-28
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: Disabled Feature Flags
The platform team is auditing stale feature flags that may be safe to remove. Pull all flags that are currently disabled, showing every column.
Today's Python Challenge: Hands Apart
A calendar widget renders an analog clock face and needs to know how far apart the two hands sit. Given a `hour` (1 to 12) and a `minute` (0 to 59), return the smaller of the two angles in degrees between the hour and minute hands, remembering that the hour hand drifts continuously toward the next mark as the minutes pass rather than jumping on the hour.