一个通不过sql语句!
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Select *
From
(select * from 2002)Union all(Select * from 2003)
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或写成:
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Select *
From
(select * from 2002)Union all(Select * from 2003) as temp (dd,tt)
说是错误的from语句。
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若写成:
Select *
From
((select * from 2002)Union all(Select * from 2003) as temp (dd,tt))
则为join错误
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请问表达这个意思的sql语句该怎么写?