我如何写上Microsoftkou服务器的指挥,以更新每行,并附上第二张表格的相应价值?
UPDATE Person SET
FirstName=Temp.FirstName
FROM Temp
WHERE Temp.PersonID=Person.PersonID
Here I want to replace every FirstName with Temp.Firstname where the personid in Person is equal to Temp.PersonID
UPDATE P
SET FirstName=T.FirstName
FROM Person P
JOIN Temp T
ON T.PersonID=P.PersonID
你们是否尝试过听从?
UPDATE Person SET
FirstName = (SELECT Temp.FirstName FROM Temp WHERE Temp.PersonID=Person.PersonID)
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