16.20 - Argument Types and Rules - Teradata Vantage NewSQL Engine

Teradata Vantageā„¢ SQL Functions, Expressions, and Predicates

Teradata Database
Teradata Vantage NewSQL Engine
March 2019
Programming Reference

Expressions passed to this function must have one of the following data types:

  • source_string = VARCHAR or CLOB
  • length = INTEGER, BIGINT, or NUMBER
  • fill_string = CHAR, VARCHAR, or CLOB

If any of the input arguments are NULL, the function returns NULL.

You can also pass arguments with data types that can be converted to the above types using the implicit data type conversion rules that apply to UDFs.

The UDF implicit type conversion rules are more restrictive than the implicit type conversion rules normally used by Teradata Database. If an argument cannot be converted to the required data type following the UDF implicit conversion rules, it must be explicitly cast.