Get to know the data
Get to know the OVER() clause
Computations with OVER()
Aggregate functions with OVER()
Using OVER() with WHERE
Instruction
Good job! Let's try another exercise with OVER().
Exercise
For each item in the Purchase table, select its name (in the Item column) and its Price. Also show the average price of all items (as AvgPrice).
Stuck? Here's a hint!
Use:
AVG(Price) OVER()
to get the average price of all items. Don't forget about the alias.
