17.10 - Restrictions on Declaring an External C++ Function - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL Data Definition Language Detailed Topics

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

If you specify CPP in the Language Clause, then you must declare the main C++ function as extern “C” to ensure that the function name is not converted to an overloaded C++ name, for example:

extern “C”
void my_cpp(long int *input_int, long int *result, char sqlstate[6])

See Teradata Vantage™ - SQL External Routine Programming, B035-1147 for details.