Customers1与Customers2表结构一致,以下SQL语句正确的有()。

A、SELECT cust_name FROM Customers1 UNION SELECT cust_name FROM Customers2 B、SELECT cust_contact FROM Customers1 UNION SELECT cust_name, cust_contact FROM Customers2 C、SELECT * FROM Customers1 UNION SELECT * FROM Customers2 D、SELECT cust_name FROM Customers1 UNION SELECT * FROM Customers2

时间:2024-02-29 14:29:25

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