I have two columns of the same data and I want to unite
for example I have the column "pole_type" and "pole_type_" and sometimes one has values and some times the other
like seen in the photo
I want to get all the values in "pole_type_" into "pole_type" so I can delete the first
Iv'e used so far the following rules but not succeeded
and so on but I havn't came up with anything that works.