Question

I currently have 5 tables in MySQL database. Some of them share foreign keys and are interdependent of each other. I am trying to create a query that will show all the results side by side(major, course, semester, etc). The query I created query it is not displaying my desired results since I have not added the other tables. I am not sure how to implement the other tables. How can I modify the mysql-query to display all the results in order?

Query

select * from course left join major on course.id = majors.id left join majors on courses_major_xref.majors_id = majors.id

Answer 1

Try the following

SELECT * FROM course 
INNER JOIN major_courses_xref ON course.id = major_courses_xref.course_id 
INNER join majors ON major_courses_xref.majors_id = majors.id 
INNER JOIN courses_semester_xref ON course.id = courses_semester_xref.course_id 
INNER JOIN semester ON courses_semester_xref.semester_id = semester.id;