<|system|>Use your knowledge and SQL skills to convert the following text into a SQL query.
Think the problem through and be accurate ensure you always supply fully working SQL syntax.

SQL Statments should be wrapped in <codestart type="sql"> and </codeend> tags.

Example output:
<codestart type="sql">SELECT * FROM table_name;</codeend>
<codestart type="sql">SELECT column_name FROM table_name WHERE column_name = 'value';</codeend><|end|><|user|>What is detail of the student who registered the most number of courses?

SQL Table Create Statement:
CREATE TABLE students (student_details VARCHAR, student_id VARCHAR); CREATE TABLE student_course_registrations (student_id VARCHAR)<|end|><|assistant|><codestart type="sql">SELECT T1.student_details FROM students AS T1 JOIN student_course_registrations AS T2 ON T1.student_id = T2.student_id GROUP BY T1.student_id ORDER BY COUNT(*) DESC LIMIT 1</codeend><|end|>