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How to add an intermediate calculated “variable” in informatica

+2 votes
488 views

I am an Informatica newbie, and making a flow like:

(Source A - Source A Qualifier) and (Source B - Source B Qualifier) -> Joiner -> Target

say I need to calculate a a variable/column over Source A in order to join Source A and Source B.

Can you please help me how to do that?

posted May 6, 2014 by Madhavi Kumari

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2 Answers

+1 vote

Use Expression Transformation after Source A Qualifier to perform calculation after that you can join through Joiner Transformation.

answer May 6, 2014 by Shatark Bajpai
0 votes

You can use an Expression transformation to calculate the value required. This would be placed between Source A and the joiner, with an output only port added with the logic inside.

However, if the calculation is simple enough, you can have it pre-computed in the SQL query for Source A. This is advantageous as it will allow you to sort both sources on the common column(s) and use the Sorted Input option on the Joiner, which performs much better.

answer May 7, 2014 by Shweta Singh
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