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    • VOS.VirtTipsAndTricksSPARQLEscapeQuotesInEntity(Last) -- DAVWikiAdmin? , 2017-06-13 05:48:41 Edit
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    WebDAV System Administrator 2017-06-13 05:48:41

    Example of Handling Double Quotes in SPARQL Query Entity Name Subject

    What?

    Escape double quotes in entity name.

    Why?

    If double quotes are not escaped properly, a syntax error will be presented.

    How?

    Here is sample scenario:

    1. Load sample data: 

      SQL> SPARQL 
INSERT INTO GRAPH <http://mygraph.com> 
  {  
    `iri (bif:concat ('http://dbpedia.org/resource/Raiders_of_the_', '"Lost"',  '_Car_Park'))` a  `iri (<http://dbpedia.org/class/yago/1994Novels> )` .
    `iri (bif:concat ('http://dbpedia.org/resource/Raiders_of_the_', '"Found"', '_Car_Park'))` a  `iri (<http://dbpedia.org/class/yago/1995Novels> )` .    
  };

Done. -- 78 msec.

    2. Find triple(s) with entity name <http://dbpedia.org/resource/Raiders_of_the_"Lost"_Car_Park> by using the iri function: 

      SQL> SPARQL 
SELECT *
FROM <http://mygraph.com>
WHERE
  {
    {`iri('http://dbpedia.org/resource/Raiders_of_the_"Lost"_Car_Park')` ?a ?b}
  };
  
a                                                     b
VARCHAR                                               VARCHAR
_______________________________________________________________________________

http://www.w3.org/1999/02/22-rdf-syntax-ns#type       http://dbpedia.org/class/yago/1994Novels

1 Rows. -- 47 msec.

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