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In which three cases would you use the USING clause?（）
A:You want to create a nonequijoin.
B:The tables to be joined have multiple NULL columns.
C:The tables to be joined have columns of the same name and different data types.
D:The tables to be joined have columns with the same name and compatible data types.
E:You want to use a NATURAL join, but you want to restrict the number of columns in the join condition.

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出自：Oracle认证

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