Big Java, Binder Ready Version: Early Objects
Big Java, Binder Ready Version: Early Objects
6th Edition
ISBN: 9781119056447
Author: Cay S. Horstmann
Publisher: WILEY
Expert Solution & Answer
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Chapter 24, Problem 14RE

Explanation of Solution

Consider the following:

The below SQL statement that computes and finds the total number of all quantities that are part of invoice number 11731:

/* Display the total from the table */

SELECT SUM (LineItem.Quantity)

FROM LineItem

WHERE LineItem.Invoice_Number = 11731

Explanation:

  • The above “SELECT” statement that calculate and returns the “SUM(LineItem.Quantity)” column from “LineItem” table where “LineItem.Invoice_Number” is equal to “11731”.
    • “SUM(LineItem.Quantity)” – It finds the sum of all quantities and returns the quantity value related to the given invoice number “11731”...

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