I need some help due to my research about that topic was not satisfying. I hope you guys can help me out. Lets say we have a DataFrame like:
df = DataFrame(A = 1:10, B = 11:20, C = rand(10))
But now I want to join "A" and "B" into one single column so it goes from 1 to 20. How do I do that...? :/
Thanks for our help!