select id, content, user_id, by_user_id,img_url, create_time, update_time, remark from app_inform insert into app_inform user_id, by_user_id, content, img_url, create_time, update_time, remark, #{userId}, #{byUserId}, #{content}, #{imgUrl}, #{createTime}, #{updateTime}, #{remark}, update app_inform user_id = #{userId}, by_user_id = #{byUserId}, content = #{content}, img_url = #{imgUrl}, create_time = #{createTime}, update_time = #{updateTime}, remark = #{remark}, where id = #{id} delete from app_inform where id = #{id} delete from app_inform where id in #{id}