17.10 - Support for UDTs - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL Date and Time Functions and Expressions

Advanced SQL Engine
Teradata Database
Release Number
Release Date
July 2021
Content Type
Programming Reference
Publication ID
English (United States)

Vantage performs implicit type conversion if the UDT has an implicit cast that casts between the UDT and any of the following predefined types.

UDT Argument Predefined Type
  • Character
  • Date
  • Timestamp
integer_expression Numeric

See the information about implicit type conversions in Teradata Vantage™ - Data Types and Literals, B035-1143. To define an implicit cast for a UDT, use the CREATE CAST statement and specify the AS ASSIGNMENT clause. For more information, see Teradata Vantage™ - SQL Data Definition Language Syntax and Examples, B035-1144.

Implicit type conversion of UDTs for system operators and functions, including ADD_MONTHS, is a Teradata extension to the ANSI SQL standard. To disable this extension, set the DisableUDTImplCastForSysFuncOp field of the DBS Control Record to TRUE.