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我写我自己的本体一个SPARQL查询这给重复的记录,为了这个,我也用GROUP_CONCAT,我的查询是汇总SPARQL结果
SELECT ?Movie (str(?y) as ?Rating) (group_concat (?z;separator=",") as ?Director)
{ ?Movie :rating ?y;
:directedBy ?z
FILTER regex(str(?Movie),'Fantastic_Four') }
GROUP BY ?y ?Movie
该查询给了我想要的结果,但输出主任进来方式如下:
http://www.semanticweb.org/administrator/ontologies/2017/2/Ontology-Schema_Movie#Josh_Trank,http://www.semanticweb.org/administrator/ontologies/2017/2/Ontology-Schema_Movie#Joshua_Trank
我不知道为什么这整个URI来了,如何删除这一点,只打印Josh_Trank,Joshua_Trank在我的结果?
1.顺便说一下,'group_concat(distinct?z; ...)'是相当合法的构造。 2.尽管AKSW回答中的变体2当然更可取,但您可能对'afn:localname' [备选定义]感兴趣(https://jena.apache.org/documentation/query/library-function.html#addtional -functions-provided-by-arq)(或在'afn:localname'本身)。 –