MySQL 从一张表update字段到另外一张表中

update student s, city c  set s.city_name = c.name where s.city_code = c.code;

update a, b set a.title=b.title, a.name=b.namewhere a.id=b.id

update student s set city_name = (select name from city where code = s.city_code);

UPDATE t_advs_order SET  attribute1=(SELECT o.order_state FROM tk_zyt_scenery_order o WHERE o.order_id=`on`),  attribute2=(SELECT o.order_state FROM tk_zyt_scenery_order o WHERE o.order_id=`on`)  WHERE EXISTS (SELECT o.order_state FROM tk_zyt_scenery_order o WHERE o.order_id=`on`);

UPDATE t_advs_order a INNER JOIN tk_zyt_scenery_order s ON s.order_id=a.`on` SET  a.attribute1=s.order_id,  a.attribute2=s.order_id;