解释如何在 Informatica Powercenter 中工作 MOD Function 以及此条件如何在表达式转换中工作 IIF((Nextval % 5) = 0, 1, 0)

Question

1. I want to Load Alternate Record in Table &

2. Also Load Every Fifth Record Load in the Table. This are two Different Scenario I Got Query how to Implement I Just Don't Understand How it is Working.

3. What is MOD Function & How MOD Function is Working in Informatica Powercenter.

4. How this Condition Work in Expression Transformation IIF((Nextval % 5) = 0, 1, 0)

For Ex: - My Source Table Contain 107 Records . So Using this Condition IIF((Nextval % 5) = 0, 1, 0) How it will Load Every Fifth Record in the Target Table?

Answer 1

You are on right track.

sequence generator will generate sequential values for Nextval field in expression.
And IIF((Nextval % 5) = 0, 1, 0) will pick every 5th record.
MOD() - like any arithmetic function, will return reminder of a division operation. for example, MOD(5,2) = 1 same can be done in informatica 5%2 = 1.

So, your mapping should be like -

1. sort the data the way you want.
2. add all columns to an expression. Add a sequence generator nextval column to the exp as well.
3. Add a filter with below condition if you want to pick alternate row.

IIF((Nextval % 2) = 0, False, True) -- picks odd rows.