17.10 - Geospatial: MBB, MBR, ST_GEOMETRY - Advanced SQL Engine - Teradata Database

Teradata Vantageā„¢ - SQL External Routine Programming

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Release Date
July 2021
Content Type
Programming Reference
Publication ID
B035-1147-171K
Language
English (United States)

C Data Type Definition

typedef int GEO_HANDLE;

Usage

Use the GEO_HANDLE data type when passing an MBB, MBR, or ST_GEOMETRY type as an argument or returning an MBB, MBR, or ST_GEOMETRY type result.

Here is an example using an ST_GEOMETRY parameter in a UDF definition and GEO_HANDLE in a C function declaration.

SQL Function Definition Equivalent C Function Declaration
CREATE FUNCTION F1 (
  A ST_GEOMETRY(1000))
RETURNS ST_GEOMETRY(1000)
 ...;
void f1( GEO_HANDLE *a,
         GEO_HANDLE *result,
         ... )
{ ... }