August 2017
Beginner to intermediate
426 pages
9h 36m
English
Rank transformation is used to get the top or bottom specific number of records. Consider that you need to take the top five salaried employees from the EMPLOYEE table; you can use rank transformation and define the property. A sample mapping indicating the Rank transformation is shown in the following screenshot:

When you create a Rank transformation, a default output port RANKINDEX comes with the transformation. It is not mandatory to use the RANKINDEX port. We have connected the RANKINDEX port to the target as we wish to denote the rank of the employees based on their SALARY.
When you use Rank transformation, you need ...
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