diff --git a/safety-cedu-service/src/test/java/db.sql b/safety-cedu-service/src/test/java/db.sql
index 70ecd083..84891eb8 100644
--- a/safety-cedu-service/src/test/java/db.sql
+++ b/safety-cedu-service/src/test/java/db.sql
@@ -157,14 +157,16 @@ create table course_management
 
 create table course_rel_courseware
 (
-    id                  bigint not null comment '主键'
+    id                       bigint                     not null comment '主键'
         primary key,
-    courseware_name     varchar(200) null comment '课件名称',
-    courseware_document varchar(512) null comment '课件文档（文件名或路径）',
-    courseware_id       bigint null comment '课件id',
-    course_id           bigint null comment '课程id',
-    sort                int null comment '排序'
-) comment '课程关联课件表';
+    courseware_name          varchar(200)               null comment '课件名称',
+    courseware_document      varchar(512)               null comment '课件文档（文件名或路径）',
+    courseware_id            bigint                     null comment '课件id',
+    course_id                bigint                     null comment '课程id',
+    sort                     int                        null comment '排序',
+    class_hour_duration_unit varchar(10) default '小时' null comment '课时时长单位'
+)
+    comment '课程关联课件表';
 
 create table courseware_management
 (