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Oracle® PL/SQL by Example, Fifth Edition by Elena Rakhimov, Benjamin Rosenzweig

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20. Functions

A function that is stored in the database is much like a procedure, in that it is a named PL/SQL block that can take parameters and be invoked. There are key differences both in the way it is created and how it is used, however. In this short chapter, you will learn the basics of how to create, use, and ...

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