UDTs Using JSON Type | JSON Data Type | Teradata Vantage - Using JSON Type with UDTs - Advanced SQL Engine - Teradata Database

You can specify the JSON data type as an attribute of a structured user-defined type (UDT), but not as the base type of a distinct UDT. When specifying a JSON attribute, you can define the size and character set of the JSON type.

For information about the functions used in the examples, see Teradata Vantage™ - SQL External Routine Programming, B035-1147.