[Koha] REPORT 100 AND 700 MARC TAG

Hello everyone, I would like to have a report of only fields 100 and 700 in a single column. I'm a student and I do not understand much about sql, but I've managed to get a 100 report through ExtractValue syntax queries (marcxml, xpath). But I do not know how to get one of the fields 100, 700 in a single report and in a column. Is that possible? Hans Manrique