I need n different files based on distinct values in Col1 with "H".
There are two ways I can think of to achieve this. One has been written up on here by @TRF and is a nice approach (https://community.talend.com/t5/Design-and-Development/Split-a-input-file-into-multiple-output-files...). The other is a method I have used which is essentially very much the same as the first, but uses bespoke Java to achieve the same ends (https://www.rilhia.com/tutorials/load-data-dynamic-number-files).
I believe both would be apporopriate, it depends on your use case and what you are comfortable with