How to add columns with empty data
I have a table similar to this: xyz xyzxyzaa12 .3bb ..cc2 3 .5The columns have rows containing both numeric and empty data.I want to create a new column (xyz) where I add the data in column x, y and z.In other words, I want the result to look like the green xyz-column. The problem is, when I run my script, I get the result in the red xyz-column..How do I add columns with empty data? I use the ...