Context: CREATE TABLE Courses (author_id VARCHAR); CREATE TABLE Course_Authors_and_Tutors (personal_name VARCHAR, family_name VARCHAR, author_id VARCHAR)
Question: Find the personal name, family name, and author ID of the course author that teaches the most courses.
Answer: SELECT T1.personal_name, T1.family_name, T2.author_id FROM Course_Authors_and_Tutors AS T1 JOIN Courses AS T2 ON T1.author_id = T2.author_id GROUP BY T2.author_id ORDER BY COUNT(*) DESC LIMIT 1