select id, user_id, course_id, create_time, update_time from fs_user_course_follow and user_id = #{userId} and course_id = #{courseId} where id = #{id} insert into fs_user_course_follow user_id, course_id, create_time, update_time, #{userId}, #{courseId}, #{createTime}, #{updateTime}, update fs_user_course_follow user_id = #{userId}, course_id = #{courseId}, create_time = #{createTime}, update_time = #{updateTime}, where id = #{id} delete from fs_user_course_follow where id = #{id} delete from fs_user_course_follow where id in #{id}