15.10 - CAST and TYPE - Teradata Database

Teradata Database SQL Data Definition Language Syntax and Examples

prodname
Teradata Database
vrm_release
15.10
created_date
December 2015
category
Programming Reference
featnum
B035-1144-151K
UDT_name
The name of the UDT for which the most recent SQL create text, including that for its CREATE ORDERING and CREATE TRANSFORM statements, are to be reported. This specification applies to both the SHOW CAST and the SHOW TYPE statements.

Similarly, if the only cast or ordering or transform functionality for a UDT is system-generated, the system does not report that DDL because it was not created by SQL CREATE requests, so there is no create text to return.