How do I de-dupe a dataset in KNIME? (i.e. remove duplicate rows, where a bunch of columns take the same values).
I see an option to de-dupe by row-id when concatenating datasets, but is it possible to do it stand-alone on a dataset? (also, if I want to de-dupe by other fields apart from just the row-id, is it possible to do that too?).

Using the Groupby node and grouping by all columns should do the trick.