Examples | ARRAY_COUNT_DISTINCT Function | Teradata Vantage - Example: Querying a 1-D ARRAY Data Type and Table using ARRAY_COUNT_DISTINCT - Advanced SQL Engine - Teradata Database

Consider the following 1-D ARRAY data type and table.

CREATE TYPE item_price AS DECIMAL(7,2) ARRAY[20];
CREATE TABLE inventory (itemkind INTEGER,
                        regular_price item_price,
                        sale_price item_price);

In the following query, ARRAY_COUNT_DISTINCT returns the number of elements whose value is equal to 100 within the scope reference of the regular_price array.

SELECT ARRAY_COUNT_DISTINCT(regular_price, 5, 10, 100) FROM inventory;

The following is the same query using method-style syntax.

SELECT regular_price.ARRAY_COUNT_DISTINCT(5, 10, 100) FROM inventory;

The following query returns the number of distinct elements in the regular_price array.

SELECT ARRAY_COUNT_DISTINCT(regular_price)FROM inventory;