Using ArcGIS 10.2.2 for Desktop, I simply want to create a copy of one of the columns in my attribute table. I created a new column by choosing 'add field' in the attribute table, however I can't copy and paste the entire column of data from one of my attributes into this new field. How can I do this?
You need to use the Field Calculator or Calculate Field tool to calculate your new field equal to your old field.
Make sure that your new field is defined the same as the old field. Otherwise it cannot be considered to be a copy.