As a slightly more sophisticated example, here is a query involving a spatial join, that is, a join where the join predicate is a spatialfunction.
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。
2
Good road landscape environment can promote the interaction between people inspire rich spatialfunction, increasing the vitality of urban public space.
良好的道路景观环境可以促进人与人之间的交往，激发丰富的空间功能活动，提高城市公共空间的活力。
3
That new function operates on all the spatial data types.