August 2017
Beginner to intermediate
426 pages
9h 36m
English
Content preview from Learning Informatica PowerCenter 10.x - Second Edition
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Rank Index
When you create a Rank transformation, a default column gets created called Rank Index. This port, if required, can generate numbers indicating the Rank. This is an optional field that you may use if required. If you do not wish to use Rank Index, you can leave the port unconnected.
Suppose you have following data belonging to the SALARY column in the source:
|
SALARY |
|
100 |
|
1000 |
|
500 |
|
600 |
|
1000 |
|
800 |
|
900 |
When you pass the data through Rank transformation and define the condition to get the top five salaried records, the Rank transformation generates the Rank index as indicated here:
|
Rank_Index |
Salary |
|
1 |
1000 |
|
1 |
1000 |
|
3 |
900 |
|
4 |
800 |
|
5 |
600 |
As you can see, Rank index ...
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