17.10 - Argument Types and Rules - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL Functions, Expressions, and Predicates

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

If arg is not FLOAT, it is converted to a FLOAT value, based on implicit type conversion rules. If the argument cannot be converted, an error is reported. For more information, see Teradata Vantage™ - Data Types and Literals, B035-1143.

If arg is a UDT, the following rules apply:
  • The UDT must have an implicit cast to any of the following predefined types:
    • Numeric
    • Character
    • DATE

    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 hyperbolic and inverse hyperbolic functions, is a Teradata extension to the ANSI SQL standard. To disable this extension, set the DisableUDTImplCastForSysFuncOp field of the DBS Control Record to TRUE. For details, see Teradata Vantage™ - Database Utilities , B035-1102 .
Hyperbolic and inverse hyperbolic functions cannot be applied to the following types of arguments:
  • BLOB or CLOB
  • CHARACTER or VARCHAR if the server character set is GRAPHIC

    Examples: Representative Hyperbolic and Inverse Hyperbolic Function Expressions

The following are representative hyperbolic and inverse hyperbolic function expressions and results.

Expression Result
COSH(EXP(1)) 7.61012513866229E 000
SINH(1) 1.17520119364380E 000
TANH(0) 0.00000000000000E 000
ACOSH(3) 1.76274717403909E 000
ASINH(LOG(0.1)) -8.81373587019543E -001
ATANH(LN(0.5)) -8.53988047997524E -001