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SQL Interview Preparation—Intermediate Level

Question: Using RANK()

Understand how to apply the RANK() window function in SQL to rank product categories based on total sales. This lesson guides you through writing queries that aggregate sales data and assign ranks for comparative analysis, enhancing your ability to assess sales performance using analytic functions.

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Question

We have a database for a company that manages information about its employees, the product categories they handle, the products within those categories, and the sales made. The Employees table stores unique identifiers (EID), employee names, and ages. The  ...