如何将一个表上的信息插入另一个表

Question

我有两张桌子：TheOfficer＆amp; TheStage，并且都有Zipcode和stageID列。不幸的是，Zipcode表中缺少某些数据TheStage。

但数据可以在TheOfficer表上。我想将Zipcode表上的TheOfficer复制到Zipcode表的TheStage列。

类似的东西：

Insert into TheStage (TheStage.Zipcode)
from TheOfficer 
where TheOfficer.stageID = TheStage.stageID

Answer 1

假设stageID链接两个表：

UPDATE TheStage(Zipcode)
   SET Zipcode = (SELECT Zipcode
                    FROM TheOfficer
                   WHERE TheStage.stageID = TheOfficer.stageID)

Answer 2

类似的东西：

Update TheStage
Set TheStage.Zipcode = TheOfficer.Zipcode
from TheOfficer
where TheStage.stageID = TheOfficer.stageID