[Source] Detailed explanation of sqlserver creating stored procedures

1. Stored Procedure: Similar to a method in C#, it is a collection of SQL statements to complete a specific task.

Features: Used to manage or handle more complex business logic. There can be parameters, return values, and parameters with return values, where variables can be defined and process control statements can be written. Create database statement cannot be included

Advantages: Improved reusability, allows for modular design, increased execution speed, reduced network traffic, and improved security.

Categories:

       1. System storage process:

1) System definition, existing in master

2) It usually starts with a sp_ or xp_.

              sp_ used to set system parameters

              xp_ used to invoke functions provided by the operating system

              Call the system stored procedure: execute the stored procedure name

       2. Customize the storage procedure

              1) User-defined, existing in the current database.

              2) Usually starts with p_. (The name is customized)

'Create syntax: