子查詢在sql中返回了超過1個值

Question

我有一個小的查詢，當我運行它時，出現錯誤。請幫幫我。 查詢：

update MozendaData set [Sub Device]= 
(select [Sub Device] from oldMozendaData 
    where MozendaData.[Product Details]=oldMozendaData.[Product Details]) 
where UserID ='APAC\gsvivekanand' 

Answer 1

試試這個：

UPDATE m 
SET m.[Sub Device] = o.[Sub Device] 
FROM MozendaData AS m 
INNER JOIN oldMozendaData AS o ON m.[Product Details] = o.[Product Details] 
WHERE m.UserID ='APAC\gsvivekanand';