16.20 - DATASET - 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)

C Data Type Definition

typedef int DATASET_HANDLE;

Usage

Use the DATASET_HANDLE data type when passing a DATASET instance as an argument or returning a DATASET type result.

Here is an example using a DATASET parameter in a UDF definition and DATASET_HANDLE in a C function declaration.

SQL Function Definition Equivalent C Function Declaration
CREATE FUNCTION F1 (
  A DATASET(100) STORAGE FORMAT AVRO)
RETURNS DATASET(100) STORAGE FORMAT AVRO 
 ...;
void f1( DATASET_HANDLE *a,
         DATASET_HANDLE *result,
   ... )
{  ... }