7.00.02 - Input - 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 input table (score_category) categorizes the students (in the table students) by score in a given subject. There are 100 students grouped into three categories - excellent (score > 90), very good (80 < score < 90) and fair (score < 80) - as shown in the SQL case statement below

Sample Example Input Table students
id score
1 5
2 83
3 95
4 95
5 90
6 55
7 40
8 57
9 65
10 27
... ...
CREATE TABLE score_category DISTRIBUTE BY hash(id) AS (
  SELECT *, CASE
    WHEN score <= 80 THEN 'fair'
    WHEN score > 80 AND score < 90 THEN 'very good'
    WHEN score >= 90 THEN 'excellent'
  END AS stratum FROM students
);
Sample Example Input Table score_category
id score stratum
1 5 fair
2 83 very good
3 95 excellent
4 95 excellent
5 90 excellent
6 55 fair
7 40 fair
8 57 fair
9 65 fair
10 27 fair