UDF C Function JSON Type Parameter Example | JSON Data Type | Teradata Vantage - Example: UDF Parameter Style TD_GENERAL - Advanced SQL Engine - Teradata Database

JSON Data Type

Product
Advanced SQL Engine
Teradata Database
Release Number
17.05
17.00
Published
September 2020
Language
English (United States)
Last Update
2021-01-23
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gzn1554761068186.ditamap
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dita:id
B035-1150
lifecycle
previous
Product Category
Teradata Vantageā„¢

This example shows an SQL definition for a UDF using parameter style TD_GENERAL with a JSON parameter, and a C function that shows the corresponding parameter list.

/* Parameter Style TD_GENERAL */

CREATE FUNCTION MyJSONUDF2 (a1 JSON(100))  
                    RETURNS VARCHAR(100)
NO SQL
PARAMETER STYLE TD_GENERAL
DETERMINISTIC
LANGUAGE C
EXTERNAL NAME 'CS!MyJSONUDF2!MyJSONUDF2.c!F!MyJSONUDF2';
/* C source file name: myJSONUDF.c */

void MyJSONUDF2 (
     JSON_HANDLE    *json_handle, 
     VARCHAR_LATIN  *result, 
     char           sqlstate[6]
{
  /* body function */
}