They should be considered carefully, as there is an associated cost of query matching for guidelines, or compilation for statistical views.

但是使用这两个特性时要谨慎，因为对于优化指南，需要额外的查询匹配开销，而对于统计视图，又有编译方面的开销。

youdao

They should be considered carefully, as there is an associated cost of query matching for guidelines, or compilation for statistical views.

但是使用这两个特性时要谨慎，因为对于优化指南，需要额外的查询匹配开销，而对于统计视图，又有编译方面的开销。

youdao