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Aggregation without using aggregator transformation in informatica

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Aggregation without using aggregator transformation in informatica

Here the scenario is to find the sum of salary department wise.

My source is

Deptno

Sal

20

800

30

1600

30

1250

20

2975

30

1250

30

2850

10

2450

20

3000

10

5000

30

1500

20

1100

30

950

20

3000

10

1300

 

And my target will be

 

Deptno

Sal

10

8750

20

10875

30

9400


Solution:
  Algorithm
1. Import source
2. If the source is relational database table apply sorting in the source qualifier. If the source is flat file take a sorter and pass ports from source into the sorter transformation and checked Deptno as key and select ascending in the Direction option. ( even though the source from relational database  you can take a sorter transformation for sorting but the sorting in the source qualifier will increase performance).
3. Take an expression transformation and drag Deptno and Sal ports from the sorter or source qualifier which one you are using.
4. And do like

5. Take another sorter and apply 

6. Again take a expression transformation and apply

7. Take a filter transformation and apply filter condition as FLAG_O =1  as

8. Pass the ports from filter into the target.

That’s it. The final mapping will look like this.

posted Jan 12, 2016 by Shivaranjini

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