Example: UDF Parameter Style SQL

Teradata Vantageā„¢ JSON Data Type

prodname
Teradata Database
Teradata Vantage NewSQL Engine
vrm_release
16.20
category
Programming Reference
featnum
B035-1150-162K

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

/* Parameter Style SQL */

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

void MyJSONUDF (
     JSON_HANDLE   *json_handle, 
     VARCHAR_LATIN  *result, 
     int            *indicator_ary,
     int            *indicator_result,
     char           sqlstate[6],
     SQL_TEXT       extname[129],
     SQL_TEXT       specific_name[129],
     SQL_TEXT       error_message[257])	
{
  /* body function */
}