mysql 对一个字段的多条记录update

举例说明：

表user

将同名的第一条记录的status设为：N

如果你打算用下面的方式更新就错了，mysql暂时不支持该方式

update user , tmp set user.status='Y' where id in (select id from user group by name);

方式一：创建临时表更新

create TEMPORARY table tmp select min(id) as id  from user group by name;

update user , tmp set user.status='Y' where user.id=tmp.id; 





DROP TABLE tmp;






方式二：
update user , (select min(id) as id  from user group by name) as tmp
 set user.status='Y' where user.id=tmp.id;