Find the id, forename and number of races of all drivers who have at least participated in two races?
select t1.driverid, t1.forename, count(*) from drivers as t1 join results as t2 on t1.driverid = t2.driverid join races as t3 on t2.raceid = t3.raceid group by t1.driverid having count(*) >= 2