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Dealing with dates
Working with time data
Date and time date
Extracting dates and times
27. Practice time!
Doing arithmetic with dates
Converting date and time data
Building date and time data from parts
Summary and review


It's time for a practice exercise. Are you ready?


Find out how many aircraft PerfectAir launched each month. Prepare a report with the following informations:

  • year (name the column Year),
  • number of the month (name the column Month),
  • number of aircraft launched this month (name the column TotalAircraft).

Order the result by date: ascending year and descending month.

Stuck? Here's a hint!

First group and then order by year and the number of the month.