// this query is very similar to the above query, but it will check the session_rel_course_user table if there are courses registered to our user or not
// this query is very similar to the above query, but it will check the session_rel_course_user table if there are courses registered to our user or not
FROM $tbl_session_course_user as session_course_user INNER JOIN $tbl_course AS course
ON course.code = session_course_user.course_code AND session_course_user.id_session = $id_session INNER JOIN $tbl_session as session ON session_course_user.id_session = session.id
ON course.code = session_course_user.course_code AND session_course_user.id_session = $id_session
INNER JOIN $tbl_session as session ON session_course_user.id_session = session.id
INNER JOIN $tbl_session_course as session_course
LEFT JOIN $tbl_user as user ON user.user_id = session_course.id_coach
LEFT JOIN $tbl_user as user ON user.user_id = session_course_user.id_user AND session_course_user.status = 2
WHERE session_course_user.id_user = $user_id ORDER BY i";