7.00.02 - Attribute Tables - Aster Analytics

Teradata Aster® Analytics Foundation User GuideUpdate 2

Product
Aster Analytics
Release Number
7.00.02
Release Date
September 2017
Content Type
Programming Reference
User Guide
Publication ID
B700-1022-700K
Language
English (United States)

The attribute tables, iris_attribute_train and iris_attribute_test, are created from the raw train and test data, iris_train and iris_test. The recommended way to create the attribute tables is to use the Unpivot function:

CREATE DIMENSION TABLE singletree1 AS 
SELECT * FROM Unpivot (
  ON iris_train
  Unpivot ('sepal_length', 'sepal_width', 'petal_length', 'petal_width')
  AttributeColumn ('attribute')
  ValueColumn ('value')
  InputTypes ('false')
  Accumulate ('id')
) ORDER BY attribute, id;

CREATE DIMENSION TABLE iris_attribute_train AS
  (SELECT id AS pid, attribute, value AS attrvalue FROM singletree1);
CREATE DIMENSION TABLE singletree2 AS 
SELECT * FROM Unpivot (
  ON iris_test
  Unpivot ('sepal_length', 'sepal_width', 'petal_length', 'petal_width')
  AttributeColumn ('attribute')
  ValueColumn ('value')
  InputTypes ('false')
  Accumulate ('id')
) ORDER BY attribute, id;

CREATE DIMENSION TABLE iris_attribute_test AS
  (SELECT id AS pid, attribute, value AS attrvalue FROM singletree2);

This query returns the following table:

SELECT * FROM iris_attribute_train ORDER BY pid, attribute;
Single_Tree_Drive Example 1 Attribute Table iris_attribute_train
pid attribute attrvalue
1 petal_length 1.4
1 petal_width 0.2
1 sepal_length 5.1
1 sepal_width 3.5
2 petal_length 1.4
2 petal_width 0.2
2 sepal_length 4.9
2 sepal_width 3
3 petal_length 1.3
3 petal_width 0.2
3 sepal_length 4.7
3 sepal_width 3.2
... ... ...

This query returns the following table:

SELECT * FROM iris_attribute_test ORDER BY pid, attribute;
Single_Tree_Drive Example 1 Attribute Table iris_attribute_test
pid attribute attrvalue
5 petal_length 1.4
5 petal_width 0.2
5 sepal_length 5
5 sepal_width 3.6
10 petal_length 1.5
10 petal_width 0.1
10 sepal_length 4.9
10 sepal_width 3.1
15 petal_length 1.2
15 petal_width 0.2
15 sepal_length 5.8
15 sepal_width 4
... ... ...