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

Teradata Vantage™ - SQL Data Definition Language Detailed Topics

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Release Date
July 2021
Content Type
Programming Reference
Publication ID
B035-1184-171K
Language
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.