Here is the fact: I have an input table (around 90 columns) and I need to uppercase and remove blanks for each column values using Knime.
I already know (and use) the “String Manipulation” node by which I am able to manipulate data column by column.
Does anyone knows or have experience with an “automatic” way to convert the whole 90 columns in one shot (maybe using a loop). I tried with the “Column List Loop” but with no success
Here’s the way I tackled this, as shown in the attached example workflow. I’m making use of the currentColumnName flow variable twice in the Column Expressions node - in both the expression itself and the output column.
If this isn’t what you were aiming for, let me know.