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摘要： 2014年2月14日 15:27:13The view definition is “frozen” at creation time, so changes to the underlying tables afterward do not affect the view definition. For example, if a view is defined as SELECT * on a table, new columns added to the table later do not become part of the view视图的结构不会主动动态变化,如果创建试图时使用的是 阅读全文