query: SELECT T1.student_id ,  count(*) FROM students AS T1 JOIN student_course_registrations AS T2 ON T1.student_id = T2.student_id GROUP BY T1.student_id
question: Are Listing id of students who had registered some courses and number of their registered courses?
query_toks: SELECT T1.student_id , count ( * ) FROM students AS T1 JOIN student_course_registrations AS T2 ON T1.student_id = T2.student_id GROUP BY T1.student_id
query_toks_no_value: select t1 . student_id , count ( * ) from students as t1 join student_course_registrations as t2 on t1 . student_id = t2 . student_id group by t1 . student_id
question_toks: Are Listing id of students who had registered some courses and number of their registered courses?