Write a SELECT statement that returns one row for each musician that has orders with these columns:

a. The email_address column from the Musicians table.
b. The sum of the item price in the Order_Instruments table multiplied by the quantity in the Order_Instruments table.
c. The sum of the discount amount column in the Order_Instruments table multiplied by the quantity in the Order_Instruments table.
d. Sort the result set in descending sequence by the item price total for each musician

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Answer:

no this question have some mistakes

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