select * from course_user u where u.user_id=#{userId} and u.course_id=#{id} and u.classify=1 select * from course_user u where u.user_id=#{userId} and u.course_id=#{id} and u.classify=2 select course_details_id from course_user u where u.user_id=#{userId} and u.course_id=#{id} and u.classify=2 update course_user set update_time =#{courseUser.updateTime} delete from course_user where order_id in (select orders_id from orders where user_id= #{userId} and pay_way=5 and status=1)