All queries based on features can combine all spatial queries with non spatial ones.
各查询以要素为基础,可将空间和非空间查询有机结合起来。
参考来源 - GML查询机制的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The end goal of this article's exercise was to prepare an existing dataset for spatial queries, including distance-based ones.
本文的最终目标是为进行空间查询(包括基于距离的查询)而准备现有的数据集。
The paper presents three methods of spatial queries: spatial Select Query, spatial Joint Query, and Nearest Neighbor Query.
该文还介绍了三种查询方法：空间选择查询、空间连接查询和最近邻居查询。
Now that the spatial table is populated, it is time to add a spatial index to support spatial queries; in DB2 that is a grid index.
既然已经填充了空间表，就应该添加空间索引来支持空间查询了；在DB 2中这是一个网格索引。
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