$sqlCoursesToDelete = "select c_id from $accessUrlRelCourseTable where access_url_id = $urlId and c_id not in (select c_id from $accessUrlRelCourseTable where access_url_id != $urlId)"
$sqlUsersToDelete = "select user_id from $accessUrlRelUserTable where access_url_id = $urlId and user_id not in (select user_id from $accessUrlRelUserTable where access_url_id != $urlId)"
$sqlSessionsToDelete = "select session_id from $accessUrlRelSessionTable where access_url_id = $urlId and session_id not in (select user_id from $accessUrlRelUserTable where access_url_id != $urlId)"
$sqlCoursesToDelete = "select c_id from $accessUrlRelCourseTable where access_url_id = $urlId and c_id not in (select c_id from $accessUrlRelCourseTable where access_url_id != $urlId)";
$sqlUsersToDelete = "select user_id from $accessUrlRelUserTable where access_url_id = $urlId and user_id not in (select user_id from $accessUrlRelUserTable where access_url_id != $urlId)";
$sqlSessionsToDelete = "select session_id from $accessUrlRelSessionTable where access_url_id = $urlId and session_id not in (select session_id from $accessUrlRelSessionTable where access_url_id != $urlId)";
$sqlCoursesToDelete = "select c_id from $accessUrlRelCourseTable where access_url_id != $urlId and c_id not in (select c_id from $accessUrlRelCourseTable where access_url_id = $urlId)"
$sqlUsersToDelete = "select user_id from $accessUrlRelUserTable where access_url_id != $urlId and user_id not in (select user_id from $accessUrlRelUserTable where access_url_id = $urlId)"
$sqlSessionsToDelete = "select session_id from $accessUrlRelSessionTable where access_url_id != $urlId and session_id not in (select user_id from $accessUrlRelUserTable where access_url_id = $urlId)"
$sqlCoursesToDelete = "select c_id from $accessUrlRelCourseTable where access_url_id != $urlId and c_id not in (select c_id from $accessUrlRelCourseTable where access_url_id = $urlId)";
$sqlUsersToDelete = "select user_id from $accessUrlRelUserTable where access_url_id != $urlId and user_id not in (select user_id from $accessUrlRelUserTable where access_url_id = $urlId)";
$sqlSessionsToDelete = "select session_id from $accessUrlRelSessionTable where access_url_id != $urlId and session_id not in (select session_id from $accessUrlRelSessionTable where access_url_id = $urlId)";