订单中心报错

src/main/resources/mapper/orders/OrdersDao.xml

@@ -94,9 +94,8 @@
     </insert>
 
     <select id="selectOrdersByOrdersNo" resultType="com.sqx.modules.orders.entity.Orders">
-        select o.*,u.user_name as userName,c.title as title,s.username as sysUserName,s.qd_code as qdCode from orders o
+        select o.*,u.user_name as userName,s.username as sysUserName,s.qd_code as qdCode from orders o
         left join tb_user u on o.user_id=u.user_id
-        left join course c on c.course_id=o.course_id
         left join sys_user s on s.user_id=o.sys_user_id
         where 1=1
         <if test="userName!=null and userName!=''">