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
at least participated in two races refers to HAVING count(*) >= 2; id refers to driverid; forename refers to the first name of the driver; number of races refers to COUNT(*) from a JOIN between drivers, results, and races tables.