On January 28st at 9:00 UTC Academy will be unavailable for 10 minutes due to planned maintenance break.
Kickstart 2020 with new opportunities! - hours only!Up to 80% off on all courses and bundles.-Close
3. Question 1
The End


Okay, let's start with something easy.


Show the average distance driven for the following grouping combinations:

  1. Year, Month, and Day
  2. Year and Month
  3. Year
  4. None (general average)

In the query result, show the following columns: Year, Month, Day, and AvgDistance.

Stuck? Here's a hint!

A natural candidate for this query is:

GROUP BY ROLLUP(Year, Month, Day)