Summary and report problem (newbie)
I've not created a report before, so please forgive me if I'm asking a silly question.
Are summary fields fields with no data in, or can you just make a field that already contains data into a summary field? I'm asking because when I want to create a report, I can't pick a summary field because FM says I have no summary field; when I go to the Manage Database - Tables screen and try to change my field I want to summarise that has data in, I get an alert saying all the data I want to summarise will be deleted if I change the type from Number to Summary.
I know I must be missing something, but I am not sure what, or how to find out?