Help with column rename (regex) and reference column filter

I added prefix1 to the iris table column using column rename (regex). What if I wanted to undo this change.

2nd I created a table for sepal_length and sepal_width. I want to include only these columns in further analysis.

Can anyone offer help in what I am doing wrong?

1 Like

Hello @SJAAB,

welcome to KNIME Community!

Here is to undo prefix1:


Reference Column Filter node filters based on column names. In your case column names are not sepal_length and sepal_width but column3 and column4 so that won’t work. Rename your columns in Table Creator node to match those from table you wish to filter.


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