SQL更新查詢

Question

我有一個表T1其中包含三列：Id, Name, Address

還有一個表T2其中包含2列Id, New_Address。 欄的T2與T1相同。

我需要一個查詢，它將更新Address列T1與New_Address的T2。

我可以通過檢查ID和執行更新語句通過循環。如何使用查詢來完成？

Answer 1

如何

UPDATE T1 
SET Address = T2.New_Address 
FROM T2 
WHERE T1.id = T2.id 

Answer 2

UPDATE T1 
SET T1.Address = T2.New_Address 
FROM T1 
INNER JOIN T2 ON T2.ID = T1.ID 

Answer 3

UPDATE T1 
SET Address = (select New_Address from T2 where T1.ID=T2.ID);