Minor - format code, fix query

main/exercice/question.class.php

@@ -149,7 +149,7 @@ abstract class Question
                 $objQuestion->position = $object->position;
                 $objQuestion->type = $object->type;
                 $objQuestion->picture = $object->picture;
-                $objQuestion->level			= (int) $object->level;
+                $objQuestion->level = (int)$object->level;
                 $objQuestion->extra = $object->extra;
                 $objQuestion->course = $course_info;
                 $objQuestion->category	    = Testcategory::getCategoryForQuestion($id);
@@ -159,7 +159,7 @@ abstract class Question
                 $sql = "SELECT DISTINCT q.exercice_id
                         FROM $TBL_EXERCICE_QUESTION q
                         INNER JOIN $tblQuiz e
-                        ON e.c_id = q.c_id AND e.id = e.exercice_id
+                        ON e.c_id = q.c_id AND e.id = q.exercice_id
                         WHERE
                             q.c_id = $course_id AND
                             q.question_id = $id AND