3.3.7 返回path中选定的部分 Returning selected parts of a path实用的小精灵（Gremlin图查询语言） 阿岶奇TinkerPop向导 PRACTICAL GREMLIN An Apache TinkerPop Tutorial

​有时，即使在path步骤中使用了from和to 调节器步骤也没有返回您所感兴趣的结果。使用和前一小节中相似的方式即一个select 步骤和一些as步骤，我们就可以选取到遍历path中指定的部分。下面的这个查询是从LAX出发找航线（route）并返回path.

Sometimes, even using the from and to modulating steps along with a path step will not give you the

results you are interested in. Using a select step and some as steps in a similar way to the example

in the previous section we can select specific parts of a traversal’s "path". Consider the query below

that finds a route from Los Angeles (LAX) and returns the path.

 

现在，想像一下，我们想要只是把所有标记为stop的部分作为我们的查询的返回结果。下面的例子显示了如何做到这些的。

Now, imagine we want to just return every other stop as the result from our query. The example

below shows how to do just that.