June 2023
Intermediate to advanced
480 pages
12h 39m
English
Content preview from Oracle PL/SQL by Example, 6th Edition
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20
Functions
Just like a procedure, a function may be created in a PL/SQL block, at a schema level, or in a package. The main difference between a procedure and a function is that a procedure performs an action, whereas a function computes and returns a value. In this chapter, you will learn about creating nested and stand-alone functions.
Lab 20.1: Creating Nested Functions
A function is another type of a subprogram. A function can accept one, many, or no parameters, and it must return a value. As a result, a function has a return data type specified in its header and a return clause ...
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