Parameter Lists in Functions that Use the TD_ANYTYPE Type - Analytics Database - Teradata Vantage

SQL External Routine Programming

Deployment
VantageCloud
VantageCore
Edition
Enterprise
IntelliFlex
VMware
Product
Analytics Database
Teradata Vantage
Release Number
17.20
Published
June 2022
Language
English (United States)
Last Update
2023-07-11
dita:mapPath
iiv1628111441820.ditamap
dita:ditavalPath
qkf1628213546010.ditaval
dita:id
B035-1147
lifecycle
latest
Product Category
Teradata Vantage™

A TD_ANYTYPE parameter type can accept any system-defined data type or UDT; therefore, TD_ANYTYPE arguments are passed in as void *.

Here is an example of how to declare a scalar function that uses TD_ANYTYPE types:

/*****  C source file name: ascii.c  *****/
   
#define SQL_TEXT Latin_Text
#include <sqltypes_td.h>
   
void ascii( void  * inputStr,
            void  * result,
            ... )
{
     ...
}

The corresponding CREATE FUNCTION statement looks like this:

CREATE FUNCTION ascii( str TD_ANYTYPE )
        RETURNS TD_ANYTYPE
        LANGUAGE C
        NO SQL
        SPECIFIC ascii
        EXTERNAL NAME 'CS!ascii!UDFs/ascii.c'
        PARAMETER STYLE SQL;