Database: cre_Students_Information_Systems
Question: For those students who have gone through an event, who do not have a student loan? List the students' biographical data
SQL:
SELECT T1.bio_data FROM Students AS T1 JOIN Student_Events AS T2 WHERE T1.student_id  =  T2.student_id EXCEPT SELECT T1.bio_data FROM Students AS T1 JOIN Student_Loans AS T2 WHERE T1.student_id  =  T2.student_id