Task: Text to Code
Input (English): SQL: SELECT course_id FROM Student_Course_Attendance WHERE student_id = 121 OR student_id = 121
Feedback: Need to make sure student course attendance table's student id equals 121 or student course registrations student id equals 121.
Output (English): SELECT course_id FROM student_course_registrations WHERE student_id = 121 UNION SELECT course_id FROM student_course_attendance WHERE student_id = 121