Multiway spatial join is the spatial join query which concern several spatial relations.
空间多路连接是涉及多个空间关系的连接查询。
We summarize that spatial index system should provides three kinds of spatial query, they are, spatial range query, nearest neighbor query, spatial join query.
本文总结出空间索引系统应提供的三类空间查询：空间范围查询、最近邻居查询、空间连接查询。
As a slightly more sophisticated example, here is a query involving a spatial join, that is, a join where the join predicate is a spatial function.
作为一个稍微复杂些的示例，下面给出一个涉及空间联结(即其中的联结谓词是空间函数的联结)的查询。
Distance join is widely used in spatial database. Selectivity estimation for distance join is the basis of optimizing the query of the distance.
距离连接在空间数据库中有着广泛的应用，而距离连接的选择度估计是优化距离查询的基础。
The contributions of this paper are as the followings:(1) A simple spatial join algorithm is constructed by the single point query for spatiotemporal datasets.
利用时空数据集的单点查询方法，组成了一种比较朴素的时空连接的算法。
The contributions of this paper are as the followings:(1) A simple spatial join algorithm is constructed by the single point query for spatiotemporal datasets.
利用时空数据集的单点查询方法，组成了一种比较朴素的时空连接的算法。
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