Can I import csv via mysql directly

I have a csv file from an external database from joomla that contains members for a club.
We are building a new website with WordPress and s2members.
Can I import old database members directly using mysql?

Yeah, you could. s2Member uses the normal WP users and usermeta tables, so you can follow a WP tutorial for that.

s2Member Pro includes a users importer that you could use, too.