From 4b4827440cbbe83c18fdcfcd00944759a8c69b6b Mon Sep 17 00:00:00 2001
From: daiao <358551898@qq.com>
Date: Tue, 17 Mar 2020 23:17:53 +0800
Subject: [PATCH] 1

---
 app/controllers/courses_controller.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/controllers/courses_controller.rb b/app/controllers/courses_controller.rb
index 6cb103c16..f3d210d24 100644
--- a/app/controllers/courses_controller.rb
+++ b/app/controllers/courses_controller.rb
@@ -105,7 +105,7 @@ class CoursesController < ApplicationController
   def course_videos
     course_videos = @course.course_videos
     course_videos = course_videos.joins("
-                    LEFT JOIN videos ON course_videos.video_id = videos.id
+                    JOIN videos ON course_videos.video_id = videos.id
                     LEFT JOIN (
                       SELECT watch_course_videos.course_video_id,
                              SUM(watch_course_videos.total_duration) AS total_duration,