ALTER TABLE users ADD COLUMN last_jam_addr BIGINT;

ALTER TABLE users ADD COLUMN last_jam_locidispid BIGINT;

-- (j)oin session as musician, (r)egister, (f)tue, (n)etwork test, maxmind (i)mport
ALTER TABLE users ADD COLUMN last_jam_updated_reason CHAR(1);

ALTER TABLE users ADD COLUMN last_jam_updated_at TIMESTAMP;