MySQL从⼀张表update字段到另外⼀张表中先来⼏个简单的⽰例 Solution 1: 1列 update student s, city c set s.city_name = c.name where s.city_code = c.code;Solution 2: 多个列 update a, b set a.title=b.title, a.name=b.name where a.id=b.id Solution 3: ⼦查询 update ...
1 update student s set city_name = (select name from city where code = s.city_code); 我们再来看几个负责写的 例如: 把表 tk_zyt_scenery_order的 字段更新到 t_advs_order中去, 一般可能会这样写: ? UPDATE t_advs_order SET attribute1=(SELECT o.order_state FROM tk_zyt_scenery_order o...
1 update student s set city_name = (select name from city where code = s.city_code); 我们再来看几个负责写的 例如: 把表 tk_zyt_scenery_order的 字段更新到 t_advs_order中去, 一般可能会这样写: ? UPDATE t_advs_order SET attribute1=(SELECT o.order_state FROM tk_zyt_scenery_order o...
mysql的从另外一张表update多个字段到另外一张表中去,UPDATEt_advs_order SETattribute1=(SELECTo.order_stateFROMtk_zyt_scenery_orderoWHEREo.order_id=`on`),attribute2=(SELECTo.order_stateFROMtk_zyt_scenery_orderoWHEREo.order_id=`on`)WHE
例如: 把表 tk_zyt_scenery_order的 字段更新到 t_advs_order中去, 一般可能会这样写: 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`)...
使用MySQL 4.0版或更高更新您可以通过加入两个或多个表一起一表;通过加入两个表连同您可以更新一个表的记录在相关领域的总部设在另一个表。 先来几个简单的示例 Solution 1: 1列 update student s, city c set s.city_name = c.name where s.city_code = c.code; ...
例如: 把表 tk_zyt_scenery_order的 字段更新到 t_advs_order中去, 一般可能会这样写: 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`)...