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InterSystems SQL Reference
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A function that returns a globally unique ID.
$TSQL_NEWID returns a globally unique ID (GUID). A GUID is used to synchronize databases on occasionally connected systems. A GUID is a 36-character string consisting of 32 hexadecimal digits separated into five groups by hyphens. Its data type is %Library.UniqueIdentifier.
$TSQL_NEWID is provided in InterSystems SQL to support InterSystems Transact-SQL (TSQL). The corresponding TSQL function is NEWID.
The $TSQL_NEWID function takes no arguments. Note that the argument parentheses are required.
The %Library.GUID abstract class provides support for globally unique IDs, including the AssignGUID() method, which can be used to assign a globally unique ID to a class.
The following example returns a GUID:
See Also