I'm trying to get the results of just 1 columns but when I use the --filter-columns the result is different, to be precise the result is divided by the number of rows. Apparently I'm not the only one with this problem, how you can see in this link. In the link, the author of the question says that when he uses the flag --sum the results of the column remains the same.
There is something that I can do to fix this or (if is not a bug) to get the same results filtering or not the columns?