Deals Of The Week - hours only!Up to 80% off on all courses and bundles.-Close

Wrap course as a gift

Prepare your gift and double-check it looks just right.

Form validation errors

Recipient's Name:
Recipient's Email:
Your Message (Optional):
Proceed to Checkout

SQL Practice Set in PostgreSQL

Introduction
Exercises

Instruction

Amazing! Three more to go!

Exercise

For all companies present in the table, show their name and the sum of gross profit over all years. To simplify this problem, assume that the gross profit is revenue – cost of production, show this column as gross_profit_sum. Show the results starting with the company that had the highest gross profit.