insert into sys_attachment (`id`,`name`,`size`,`ext`,`hash`,`url`,`create_by`,`create_time`,`del_flag`) values (?id,?name,?size,?ext,?hash,?url,?create_by,?create_time,?del_flag) update sys_attachment set `name` = ?name,`size` = ?size,`ext` = ?ext,`hash` = ?hash,`url` = ?url,`create_by` = ?create_by,`create_time` = ?create_time,`del_flag` = ?del_flag where id = ?id delete from sys_attachment where id =?id select `id`,`name`,`size`,`ext`,`hash`,`url`,`create_by`,`create_time`,`del_flag` from sys_attachment where id = ?id select `id`,`name`,`size`,`ext`,`hash`,`url`,`create_by`,`create_time`,`del_flag` from sys_attachment