SQL query to list total unit sales of products with ID 1, 2, and 7 in single row and three columns labelled as Prod1, Prod2 and Prod7 respectively.

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Chapter 5, Problem 5.90PAE

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SQL query to list total unit sales of products with ID 1, 2, and 7 in single row and three columns labelled as Prod1, Prod2 and Prod7 respectively.

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