Added field in sessions + courses query that considerably boosts the listing of sessions and courses - refs #4890

main/inc/lib/usermanager.lib.php

@@ -2233,7 +2233,7 @@ class UserManager {
         }
 
         $sql = " $select FROM $tbl_session as session LEFT JOIN $tbl_session_category session_category ON (session_category_id = session_category.id)
-                      INNER JOIN $tbl_session_course_user as scu ON (scu.id_session = session.id)
+                      INNER JOIN $tbl_session_course_user as scu ON (scu.id_session = session.id AND scu.user_id = $user_id)
                       LEFT JOIN $tbl_session_user su ON su.id_session = session.id AND su.id_user = scu.id_user
                 WHERE (
                          scu.id_user = $user_id OR session.id_coach = $user_id