I want consider columns through regex in generate aggregation operator

sgnarkhede2016

Hello,
I have total 20 columns in my data ,three column like scenario_1,scenario_2,scenario_3 i want concat these three through generate aggregation operator how can i do this.
I write regex like "\w+_ " but not working for me 

MartinLiebig

Hi,

can you please provide a simple example process for what you tried?

Best,

Martin