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Window Functions in MS SQL Server

Get to know the data
Get to know the OVER() clause
6. Practice time!
Computations with OVER()
Aggregate functions with OVER()
Using OVER() with WHERE
Summary

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.