Scan matching algorithm is used to correct the building map further.
采用扫描匹配的方法对创建的地图进一步校正。
参考来源 - 基于激光测距仪的同步定位与建图研究·2,447,543篇论文数据，部分数据来源于NoteExpress
If your intention is a real "between" predicate, then the execution plan on the right is much better, because a single range scan with a start-top predicate delivers the matching row IDs only.
如果您的目的是要实现真正的“between”谓词，则右侧的执行计划会更好一些，因为带有启动谓词的单个范围扫描仅传递匹配的行id。
Index scan (IXSCAN) with matching predicates.
使用匹配谓词的索引扫描(IXSCAN)。
Typically, a non-matching index scan is chosen by the optimizer when the underlying index provides benefits such as index-only access, avoids sort, or some similar benefit.
通常情况下，在基础索引提供好处(如唯一索引访问、避免排序或一些类似的好处)时，可通过优化器选择非匹配索引扫描。
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