[otrs] Stats. Hos to use an external field imported to MySql?

Hi all, I downloaded from another database to MySql some fields related with our customers as "Building". I want to use this information in my stats but I can not get this field. Any idea about how to get this field information in our stats? We are looking for the number of tickets by Building (We need to know hoy many tickets are coming from the different buildings) Thanks in advance Raoul