17.10 - Example: Querying a 2-D ARRAY Data Type and Table using ARRAY_SUM - Advanced SQL Engine - Teradata Database

Teradata Vantageā„¢ - Data Types and Literals

Advanced SQL Engine
Teradata Database
Release Number
Release Date
July 2021
Content Type
Programming Reference
Publication ID
English (United States)

Consider the following 2-D ARRAY data type and table.

CREATE TYPE shot_ary AS INTEGER ARRAY[1:50][1:50];
CREATE TABLE seismic_data (
   id INTEGER,
   shot1 shot_ary,
   shot2 shot_ary);

When evaluating the following query, each element value in the shot1 array is added together. The resulting value is divided by 2.

SELECT ARRAY_SUM(shot1) / 2 FROM seismic_data;

In the following query, ARRAY_SUM adds each element within the specified scope reference of the shot1 array. The query returns a value representing the total sum of adding the affected element values of the shot1 array.

SELECT ARRAY_SUM(shot1, NEW arrayVec(5,5), NEW arrayVec(10,10)) FROM seismic_data;