Topic 16124 min readStructured Tutorial
User Defined Scalar Functions in SQL Server
Quick Answer
User Defined Scalar Functions in SQL Server are custom functions that return a single value. They allow encapsulating reusable logic for calculations or data transformations, improving code modularity and readability.
Learning Objectives
- Understand what User Defined Scalar Functions are in SQL Server.
- Learn how to create and invoke scalar functions.
- Recognize best practices and common mistakes when using scalar functions.
Introduction
User Defined Scalar Functions (UDFs) in SQL Server allow you to create custom functions that return a single value.
They are useful for encapsulating reusable logic such as calculations or string manipulations, making your SQL code cleaner and easier to maintain.
Encapsulation and reuse are key to maintainable SQL code.
