SELECT T2.Name FROM course_arrange AS T1 JOIN teacher AS T2 ON T1.Teacher_ID  =  T2.Teacher_ID GROUP BY T2.Name HAVING COUNT(*)  >=  2
Show names of teachers that teach at least two courses.
SELECT T2.Name FROM course_arrange AS T1 JOIN teacher AS T2 ON T1.Teacher_ID = T2.Teacher_ID GROUP BY T2.Name HAVING COUNT ( * ) > = 2
select t2 . name from course_arrange as t1 join teacher as t2 on t1 . teacher_id = t2 . teacher_id group by t2 . name having count ( * ) > = value
Show names of teachers that teach at least two courses .