如何用MySQL中的單個選擇查詢更新多列？

Question

舉一個例子，下面有兩個表格。

OldData 
----------- 
    id 
    name 
    address 

NewData 
----------- 
    nid 
    name 
    address 

我想NewData表更新OldData表。

爲了這個目的，我嘗試使用下面的查詢：

UPDATE OldData SET (name, address) = (SELECT name, address FROM NewData WHERE nid = 234) 
WHERE id = 123 

但是它給出了一個語法錯誤。

做什麼我嘗試的正確方法是什麼？

Answer 1

UPDATE OldData o, NewData n 
SET n.name = o.name, n.address = o.address 
where n.nid=234 and o.id=123; 

Answer 2

試試這個：

Update oldData set name = (select name from newData where nid = 234),address = (select address from newData where nid = 123); 

Answer 3

試試這個：

UPDATE OldData a,NewData b 
SET a.name = b.name , a.address = b.address 
WHERE a.id=123 AND b.nid = 234