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甲骨文认为在不同情况下从chem子中提取数据?
原标题:Oracle view pulling data from schemas in different instances?
  • 时间:2011-05-05 09:24:50
  •  标签:
  • oracle
  • view

如何能形成一种“Oracle”观点,在两种不同情况下使用两种图象的数据?

我们知道,在同样情况下,如何用两个图表来做到这一点:

CREATE VIEW MYVIEW AS 
SELECT X,Y,Z FROM A.MYTABLE
UNION 
SELECT X,Y,Z FROM B.MYTABLE

但是,如果图象<代码>A和B不同,那么甲骨质如何?

最佳回答

You could create a database link: http://download.oracle.com/docs/cd/B28359_01/server.111/b28310/ds_concepts002.htm#ADMIN12092 and then do

CREATE VIEW MYVIEW AS  
SELECT X,Y,Z FROM A.MYTABLE 
UNION  
SELECT X,Y,Z FROM B.MYTABLE@<LinkName>
问题回答

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