CREATE TABLE student_course_registrations (student_id VARCHAR(255), registration_date VARCHAR(255)); CREATE TABLE students (student_details VARCHAR(255), student_id VARCHAR(255))
What is detail of the student who most recently registered course?
    
SQL: SELECT T2.student_details FROM student_course_registrations AS T1 JOIN students AS T2 ON T1.student_id = T2.student_id ORDER BY T1.registration_date DESC LIMIT 1