16.20 - Argument Types and Rules - Teradata Vantage NewSQL Engine

Teradata Vantage™ SQL Functions, Expressions, and Predicates

prodname
Teradata Database
Teradata Vantage NewSQL Engine
vrm_release
16.20
category
Programming Reference
featnum
B035-1145-162K

If arg is not FLOAT, it is converted to FLOAT based on implicit type conversion rules. If the argument cannot be converted, an error is reported. For more information on implicit type conversion, 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 SQRT, is a Teradata extension to the ANSI SQL standard. To disable this extension, set the DisableUDTImplCastForSysFuncOp field of the DBS Control Record to TRUE. See Teradata Vantage™ - Database Utilities , B035-1102 .
SQRT cannot be applied to the following types of arguments:
  • BYTE or VARBYTE
  • BLOB or CLOB
  • CHARACTER or VARCHAR if the server character set is GRAPHIC