How to get distinct values from a none relation FileMaker Pro database

I have a FileMaker Pro database the was create by another person when the created it years ago it was not relational. It has many contacts and each contact is assigned to a single group. I want to get a distict list of those groups from that database. So if I started with say

group 1 group 1 group 2 group 3 group 7 group 3

I would end up with just groups 1,2,3,and 7 once each

than I can import them into the new database to make it relational so one contact can belong to more than one group

but I can't seem to开发者_Python百科 figure out how to get that list. If someone could help I would appreciate it.

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Sort by group, then export into, say, tab-separated file, and in the export dialog check the "group by" flag for the group field. The resulting file will have only distinct groups.