Why GUIDs are Used?
GUIDs can be produced by using the built-in function called the NEWID() Function, and if we want to insert a new value into a GUID’s column then we can use the same function (NEWID() function).
The main reason for using the GUIDs is that it allows us to merge data from different servers without any problems.
How to Check GUID is Null or Empty in SQL Server
GUID stands for Globally Unique Identifier, the GUID is a 16-byte long binary data type. the GUID is special because it is globally unique across all the databases, tables, and servers available. In the GUID there is a unique reference number present which is generated by the algorithm every time we execute the query to generate GUID. the GUID is stored as a 128-bit value but when it is displayed by the machine or system it is displayed as 32 hexadecimal digits. in this article we will learn what is GUID, why they are used as well as how to create them, and whether a GUID is null or empty in the SQL Server.