将指定的档案参考加入至集合中。

Adds the specified file reference to the collection.

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判断集合是否包含指定名称所参考的资料行。

Determines whether the collection contains the column referred to by the given name.

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判断集合是否包含指定名称所参考的资料行。

Determines whether the collection contains the column referred to by the given name.

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