该选项以筛选的方式用于非匹配索引扫描，且是仅索引访问的一部分。
The option can be used in non matching index scans in a screening fashion and as part of index-only access.
两个本地谓词无法从匹配或筛选现有的索引扫描中获益。
The two local predicates cannot benefit from matching or screening index scans from any of the existing indexes.
优化器将决定是否可以使用索引来评估筛选器。
The optimizer will decide whether an index can be used to evaluate a filter.
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