Task: Text to Code
Input (English): SQL: SELECT T1.sec_id FROM section AS T1 WHERE T1.course_id NOT IN ( SELECT T2.course_id FROM prereq AS T2 )
Feedback: In step 2 it should find course's course id which are'nt one of the results of step 1.
Output (English): SELECT course_id FROM course EXCEPT SELECT course_id FROM prereq