Galactic Customer Revenue Breakdown

Galactic Customer Revenue Breakdown :Analyze Revenue Contributions by Customer Intermediate

Track each customer's contribution to the Zlacksys 19 treasury.

Xorthax is reviewing his customer transactions across the galaxy. He wants to know the total revenue generated by each customer at his trading post on Zlacksys 19. Write a query to calculate the revenue contribution of each order, along with the total galactic revenue per customer.
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Measuring customer revenue contributions to understand which patrons drive the most sales.

Applying group-level revenue calculations and comparing individual transactions to overall totals.

This problem is labeled as Intermediate. It assumes you’ve written a few window function queries before, but you don’t need to be an expert. Use the hints and explanations if you get stuck — they’re there to help you think through the logic.

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SQL for Data Analysis (O’Reilly)
SQL for Data Analysis (O’Reilly)

SQL techniques tailored for analytics and reporting workflows.

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