> I'm not sure how to create a result where I get the average number of
> new users per day of the week. My issues are that days that did not
> have any new users will not be factored into the average
This is a pretty common problem with time-series queries when there is
sparse data. My go-to solution is to use generate_series---in your case
from 0 to 6---then do a left join from there to your actual data.
Paul