if the columns are strings, use them (#6405)
if the columns are strings, use them (#6405)


hail-is/hail,hail-is/hail,hail-is/hail,cseed/hail,cseed/hail,hail-is/hail,cseed/hail,danking/hail,danking/hail,danking/hail,cseed/hail,danking/hail,danking/hail,danking/hail,cseed/hail,danking/hail,hail-is/hail,hail-is/hail,cseed/hail,hail-is/hail,danking/hail,hail-is/hail,cseed/hail,cseed/hail