On January 21th at 14:15 UTC , progression through exercises will be unavailable for 10 minutes due to a planned maintenance break.
Deals Of The Week - hours only!Up to 80% off on all courses and bundles.-Close
Introduction
Dates
Time
Timestamps
Extract functions
Timezone conversion
Intervals
Current date and time
Review
44. Exercise 5

Instruction

Fantastic. Let's face the next to last exercise.

Exercise

Group all the flights by the year. Show the year (as year) and calculate the average delay time for each of those years (as avg).