mysql中update和select结合使用方式

update A inner join(select id,name from B) c on A.id = c.id set A.name = c.name;

update u
set u.city_no = c.city_no
from user u 
inner join city c 
on u.city_uuid = c.city_uuid
where u.city_uuid is not null and u.city_no is null

update u
set u.city_no = (select c.city_no from city c where u.city_uuid = c.city_uuid)
from user u

update u
set u.city_no = c.city_no  
from [user] u, city c 
where u.city_uuid = c.city_uuid

update table1 t1,table2 t2, table3 t3, ... , tablen tn
set t1.column= ?, t2.column, t3.column = ?, ... , tn.column = ?
where t1.xx= ?, t2.xx = ?, ... , tn.xx = ?

update r2
set r2.userUuid = r1.userUuid, r2.userName = r1.userName , r2.age = r1.age, r2.updatedTime = '2021-02-22 22:22:22.222'
from user r1
inner join user r2
on r1.conditionUuid = r2.conditionUuid
where r1.conditionValue = 'condition-consumer-00000000000000000' and r1.userName is not null
and r2.conditionValue = 'condition-producter-0000000000000000' and r2.userName is not null