UUIDTOSTR function [String]

Converts a unique identifier value (UUID, also known as GUID) to a string value.

UUIDTOSTR ( uuid-expression )

Converts a unique identifier to a string value in the format xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx, where x is a hexadecimal digit. If the binary value is not a valid uniqueidentifier, NULL is returned.

This function is useful if you want to view a UUID value.