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PL/SQL Functions vs Procedures:
In PL/SQL, functions and procedures are both named PL/SQL blocks that perform a specific task. The main difference lies in their return types and how they are called.
Functions:
- Functions must return a value.
- They can be used in SQL statements and expressions.
- They are called in SELECT or WHERE clauses.
- Functions can be used to calculate and return a single value.
Procedures:
- Procedures do not have to return any value.
- They cannot be used in SQL statements or expressions.
- Procedures are called as standalone executable units.
- Procedures can perform tasks such as modifying data, outputting values, or executing multiple statements.
Overall, functions are used to compute and return values, while procedures are used to execute a series of statements or tasks without necessarily returning a value.
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