On January 21th at 14:15 UTC , progression through exercises will be unavailable for 10 minutes due to a planned maintenance break.
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Nested CTEs
14. Exercise 2


Very good. Now for the second question!


A city is performing well if their total number of items sold is above the average for their region. For each city, show its Name and its Label – either N'Above average' or N'Below average' – depending on how well the city performs.