The option -r has no effect when the Design Advisor is used to recommend MQTs for federated queries.
当Design Advisor用于为联邦查询推荐MQT时,选项- r没有效果。
If we want to add another option — for example, Submitted — the Boolean attribute, which allows two possible values true or false, does not accommodate this design approach anymore.
如果我们想要添加另外一个选项——例如,Submitted——布尔型属性,它拥有两个值true或者false,就不再需要提供这个设计方法了。
The option -r instructs the Design Advisor to use extended statistics for the considered MQTs.
选项 -r 指示 Design Advisor 为考虑的 MQT 使用扩展的统计信息。
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