Mapping data using a subquery - 6.5

ELT Greenplum

author
Talend Documentation Team
EnrichVersion
6.5
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Data Governance > Third-party systems > ELT components > ELT Greenplum components
Data Quality and Preparation > Third-party systems > ELT components > ELT Greenplum components
Design and Development > Third-party systems > ELT components > ELT Greenplum components
EnrichPlatform
Talend Studio

This scenario describes a Job that maps the data from two input tables PreferredSubject and CourseScore to the output table TotalScoreOfPreferredSubject using a subquery.

For more technologies supported by Talend, see Talend components.

The PreferredSubject table contains the student's preferred subject data. To reproduce this scenario, you can load the data to the table from a CSV file like the following. For how to load data to a Teradata table, see Loading data into a Teradata database.
SeqID;StuName;Subject;Detail
1;Amanda;art;Amanda prefers art.
2;Ford;science;Ford prefers science.
3;Kate;art;Kate prefers art.
The CourseScore table contains the student's subject score data. To reproduce this scenario, you can load the data to the table from a CSV file like the following. For how to load data to a Teradata table, see Loading data into a Teradata database.
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
Before the Job execution, there is no data in the output table TotalScoreOfPreferredSubject:
SeqID;StuName;PreferredSubject;TotalScore