The query is somewhat complex but provides a realistic example of how someone can return multiple portions of XML data (for example, multiple XML nodes) and restrict results based on an XML predicate.
此查询比较复杂，但是更加真实；它演示如何返回 XML 数据的多个部分（例如多个 XML 节点）并根据 XML 谓词限制结果。
Additional scripts test the implemented mechanisms on the provided sample data and show an example of a distance-based query, complete with map images.
其他脚本在提供的数据示例上测试实现的机制，并给出一个基于距离的查询示例，而且与地图图像结合在一起。
Listing 1 gives an example of a SQL query based on a cube model and shows how the parts of the SQL statement map to the elements of the cube model.
清单1给出了一个基于多维数据集模型的SQL查询示例，并展示了sql语句的各个部分如何映射到多维数据集模型中的元素？
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