Mapping data using a subquery
The sample Job described in this scenario maps the data from two input tables, PreferredSubject and CourseScore, to the output table, TotalScoreOfPreferredSubject, using a subquery.
Prerequisite
Ensure that you have added an Oracle database connection in the Centralizing database connections.
section prior to creating the Job. For more information, seeThe Standard Job and the Prejob design
In this scenario, design the Standard Job such as the following:
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SeqID;StuName;Subject;Detail
1;Amanda;art;Amanda prefers art.
2;Ford;science;Ford prefers science.
3;Kate;art;Kate prefers art.
SeqID;StuName;Subject;Course;Score;Detail
1;Amanda;science;math;85;science score
2;Amanda;science;physics;75;science score
3;Amanda;science;chemistry;80;science score
4;Amanda;art;chinese;85;art score
5;Amanda;art;history;95;art score
6;Amanda;art;geography;80;art score
7;Ford;science;math;95;science score
8;Ford;science;physics;85;science score
9;Ford;science;chemistry;80;science score
10;Ford;art;chinese;75;art score
11;Ford;art;history;80;art score
12;Ford;art;geography;85;art score
13;Kate;science;math;65;science score
14;Kate;science;physics;75;science score
15;Kate;science;chemistry;80;science score
16;Kate;art;chinese;85;art score
17;Kate;art;history;80;art score
18;Kate;art;geography;95;art score
SeqID;StuName;PreferredSubject;TotalScore