Show the ids for all the faculty members who have at least 2 students.
SELECT T1.FacID FROM Faculty AS T1 JOIN Student AS T2 ON T1.FacID  =  T2.advisor GROUP BY T1.FacID HAVING count(*)  >=  2
SELECT T1.FacID FROM Faculty AS T1 JOIN Student AS T2 ON T1.FacID  =  T2.advisor GROUP BY T1.FacID HAVING count(*)  >=  2
[{'FacID': 1121}, {'FacID': 1148}, {'FacID': 2192}, {'FacID': 2311}, {'FacID': 5718}, {'FacID': 7134}, {'FacID': 7271}, {'FacID': 8722}, {'FacID': 8772}]