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w3school
Use https://www.w3schools.com/sql/ to complete the following SQL queries. Provide the code
4.1 What supplier appears to be the most important (in terms of revenue generation)? Write a query to answer this question (10 points).
4.2 How much revenue by product category does each shipper handle? Write a query to answer this question (10 points).
4.3 What customer purchases the most seafood (in terms of revenue)? Write a query to answer the question (10 points).