Re: [Virtuoso-users] compare literals via SPARQL on DBpedia

[Kingsley Idehen]

On 11/22/13 2:55 PM, Lorenz Bühmann wrote:

Hi,

I'm wondering if it's a bug when I try to run the following SPARQL query on http://dbpedia.org/sparql

SELECT * WHERE {
    ?s dbpedia-owl:birthDate ?o1.
    ?s dbpedia-owl:birthDate ?o2.
    FILTER(!sameTerm(?o1, ?o2))
} LIMIT 100



http://dbpedia.org/resource/Avet_Terterian 1929-07-29    1929-07-29


Kind regards,
Lorenz

which is supposed to return resources which have more than one birthDate, but also returns resource with only one birthDate, e.g.

I see:

[1] http://dbpedia.org/sparql?default-graph-uri=&query=prefix+dbpedia-owl%3A+%3Chttp%3A%2F%2Fdbpedia.org%2Fontology%2F%3E%0D%0ASELECT+*+WHERE+%7B%0D%0A++++%3Fs+dbpedia-owl%3AbirthDate+%3Fo1.%0D%0A++++%3Fs+dbpedia-owl%3AbirthDate+%3Fo2.%0D%0A++++FILTER%28%21sameTerm%28%3Fo1%2C+%3Fo2%29%29%0D%0A%7D+LIMIT+10&format=text%2Fhtml&CXML_redir_for_subjs=121&CXML_redir_for_hrefs=&timeout=30000&debug=on -- DBpedia

[2] http://lod.openlinksw.com/sparql?default-graph-uri=&query=prefix+dbpedia-owl%3A+%3Chttp%3A%2F%2Fdbpedia.org%2Fontology%2F%3E%0D%0ASELECT+*+WHERE+%7B%0D%0A++++%3Fs+dbpedia-owl%3AbirthDate+%3Fo1.%0D%0A++++%3Fs+dbpedia-owl%3AbirthDate+%3Fo2.%0D%0A++++FILTER%28%21sameTerm%28%3Fo1%2C+%3Fo2%29%29%0D%0A%7D+LIMIT+10&format=text%2Fhtml&CXML_redir_for_subjs=121&CXML_redir_for_hrefs=&timeout=30000&debug=on -- LOD Cloud Cache .

Kingsley

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Regards,

Kingsley Idehen 
Founder & CEO
OpenLink Software
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