需要用的Join语句,如下是更改sys_user表 登录名为a1的相关字段改为登陆名为a2的相关字段值:
update sys_user u
join (select photo,weixin_id from sys_user where login_name="a2") as u3
set u.photo=u3.photo,u.name=u3.name
where u.login_name="a1"
需要用的Join语句,如下是更改sys_user表 登录名为a1的相关字段改为登陆名为a2的相关字段值:
update sys_user u
join (select photo,weixin_id from sys_user where login_name="a2") as u3
set u.photo=u3.photo,u.name=u3.name
where u.login_name="a1"