In Figure 10A-58, why is the SELECT statement that begins SELECT @CustomerID necessary?

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Database Processing Fundamentals, Design, and Implementation

ISBN: 978-0133876703

14th edition

Authors: David M. Kroenke, David J. Auer

Question Posted: Jan 05, 2019 12:17 PM

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In Figure 10A-58, why is the SELECT statement that begins SELECT @CustomerID necessary?

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Database Processing Fundamentals, Design, and Implementation

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