In Rules Engine Node, How do I select a column based on variable?

KNIME Analytics Platform
1

So, I have several columns:

COL1

COL2

COL3

...

 

Then, I have a variable and it has a name for one of the columns:

Var1

 

I want to do this:

TRUE => One of the columns that matches the text in Var1

2

$COL1$ = Var1 => TRUE
 

3

Sorry, bud, but this is not it. This will check the value in col1 against the variable and then give True/False outcome. This is not what I am trying to do. I want the name of the column to be compared to the variable and then the outcome be the value in that column.

4

I don't think this is possible with just a single Rule Engine node. I once had a similar requirement and went for the following:

Create the rule for each row dynamically before the Rule Engine, and pipe it to the Rule Engine as a flow variable. Surround everything with a loop, so that each row is processed in isolation.

I'll attach an example.

5

Thank you qqilihq. I will look into it this weekend. I'll post an update on your method later.