Minimum Bounding Types | Geospatial Data Types | Teradata Vantage - 17.10 - Minimum Bounding Types - Advanced SQL Engine - Teradata Database

Teradata Vantageā„¢ - Geospatial Data Types

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Release Date
July 2021
Content Type
Programming Reference
Publication ID
B035-1181-171K
Language
English (United States)

When working with geospatial data, it is often convenient to find the smallest rectangle or box shape that could contain a given 2D or 3D shape. Vantage includes methods and types that let you determine these "minimum bounding" shapes.

The ST_MBR() and MBB() methods on ST_Geometry return MBR and MBB types, respectively, that define these minimum bounding rectangle and box shapes. These are Teradata extensions to the SQL/MM Spatial standard.

Example: Finding the Minimum Bounding Box of Geometric Shapes

Consider the following table definition:

CREATE TABLE sample_MBRs (skey INTEGER, shape_mbr MBR);

The following SQL would obtain the MBR of each geometry in the shape column of the sample_shapes table using the ST_MBR method for ST_Geometry objects.

INSERT INTO sample_MBRs
SELECT skey, shape.ST_MBR()
FROM sample_shapes;