SELECT personal_name FROM Course_Authors_and_Tutors INTERSECT SELECT personal_name FROM Students
What are the personal names used both by some course authors and some students?
SELECT personal_name FROM Course_Authors_and_Tutors INTERSECT SELECT personal_name FROM Students
select personal_name from course_authors_and_tutors intersect select personal_name from students
What are the personal names used both by some course authors and some students ?