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Difference between a Function and a Procedure in PL/SQL

In PL/SQL, the main difference between a function and a procedure lies in their return values. A function always returns a value to the calling environment, whereas a procedure does not have a return value.

Functions are typically used to perform a calculation or a task and return a single value, which can be of any data type. On the other hand, procedures are used to perform a set of actions or operations without returning any value explicitly.

Another key difference is that functions can be called directly in SQL statements, while procedures cannot. Functions can be used in SELECT, WHERE, and other clauses of SQL queries, making them more versatile in certain situations.

Overall, functions and procedures serve different purposes in PL/SQL, with functions focused on returning values and procedures focused on performing tasks without returning any specific value.

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