thx for the answer it works fine for 2 columns. but if i have for example 10 columns and 3 columns should be summed its very circular. … (i have to apologize because my question doesnt say any word about that)
I never had that need myself, but i would imagine that workflow variables and loop support could do the trick for “dynamically wide” tables. Or the Java snippet node, of course, which is KNIMEr’s favourite…