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Exercises with artist, museums and their pieces of art
Exercises with the band members table
Exercises with tables of Japanese 100 Yen store
Exercises with employees, salaries and benefits


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Select the first and last name of each client, names of categories they purchased from, and the total amount of money they spent on each product category.

Stuck? Here's a hint!

You need to use regular JOINs to join all tables from our database. Sum all prices. Group by first and last name of a client, and by the name of a category.