How to use SQL Server GUID as the Primary Key How to use NEWID() In SQL
You can use the NEWID() function to create a new GUID. It generates a random value as GUID. The goal of GUID design is to be globally unique at any point in time. As discussed above GUID datatype is represented by uniqueidentifier.
A primary key is a unique identifier for every entry in a table that prevents duplicate values from occurring. So, Instead of using integers as the primary key, you can use GUIDs as the PRIMARY KEY Column of a table which brings in some advantages.
What is a GUID in SQL Server?
Globally Unique Identifiers, or GUIDs, are 16-byte (128-bit) binary data types in SQL Server that contain values and are represented by unique identifiers. Each table modeling procedure starts with a business key, surrogate key, identity key, etc. An increasingly distinct identity is required when common business entities need to be joined for data storage and analytics.
GUIDs are utilized in these situations since they are distinct for all servers, databases, and tables. Furthermore, when compared to other data formats, GUIDs might be somewhat large.