The universal ID, which uniquely identifies a document across all replicas of a database. In text format, the universal ID is a 32-character combination of hexadecimal digits (0-9, A-F).
The universal ID is also known as the unique ID or UNID.
universal ID可以認爲是唯一的ID 或者UNID
To display the UNID, you must convert the result of this function to text, that is, you must specify @Text(@DocumentUniqueID).
要顯示UNID,你一定要將UNID轉換爲TEXT的形式.例如:@Text(@DocumentUniqueID).
