16.20 - Example: Procedure with Parameter Style TD_GENERAL - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - SQL External Routine Programming

Product
Advanced SQL Engine
Teradata Database
Release Number
16.20
Release Date
April 2020
Content Type
Programming Reference
Publication ID
B035-1147-162K
Language
English (United States)

Here is a code excerpt that shows how to declare a C function for an external stored procedure that uses parameter style TD_GENERAL:

/*****  C source file name: getregion.c  *****/
   
#define SQL_TEXT Latin_Text
#include <sqltypes_td.h>
#include <string.h>
   
void xsp_getregion( VARCHAR_LATIN *region,
                    char           sqlstate[6])
{
     ...
}

For a complete example of the C function, see Example: Basic External Stored Procedure.

The corresponding CREATE PROCEDURE statement to install the external stored procedure on the server looks like this:

CREATE PROCEDURE GetRegionXSP
  (INOUT region VARCHAR(64))
LANGUAGE C
NO SQL
EXTERNAL NAME 'CS!getregion!xspsrc/getregion.c!F!xsp_getregion'
PARAMETER STYLE TD_GENERAL;