在ArangoDB中相交两个遍历 [英] Intersect two traversals in ArangoDB

问题描述

我试图了解如何在ArangoDB中将两个结果相交，而我的情况看起来像这样.

I'm trying to understand how to intersect two results in ArangoDB and my scenario looks like this.

通过查询，我可以轻松找到居住在西班牙，岛屿或欧洲的用户

I can easily find users living in Spain, Island or Europe with the query:

FOR x IN 1..3 INBOUND "places/Europe" situedIn,livesIn 
FILTER IS_SAME_COLLECTION('users',x)
return x

我想了解的是扩展搜索功能以包括专业的最佳方法:

What I want to understand is the best way to extend the search capabilities to include Profession:

示例:

• 归还西班牙的所有警察(归还[A])
• 归还欧洲的所有警察(归还[A])
• 返回欧洲的所有法律(返回[A，B])

感谢您的帮助

推荐答案

经过更多搜索后，答案是INTERSECTION

After some more searching the answer is INTERSECTION

FOR a IN INTERSECTION (

(FOR x IN 1..3 INBOUND "places/Europe" situedIn
   FOR p IN INBOUND x livesIn
   return p),

(FOR x IN 1..3 INBOUND "profession/Medical" specializes
   FOR p IN INBOUND x worksWith
   return p)

) RETURN a

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