without showing the data impossible to help, sorry. I mean, in the end
the query has to match the data, but we only know the query know - so
how can we help here?
One possible error is the triple pattern
?s <http://www.w3.org/TR/html4/Class1> ?class .
what is the idea behind this? Is there really a property <Class1> in the
data? If not and if you want to get an instance of the Class <Class1>
you have to use
?s a <http://www.w3.org/TR/html4/Class1> .
On 31.03.21 16:12, emri mbiemri wrote:
Dear all,
I am trying to query something from an RDF/XML file with SPARQL but when I try
queries like this:
SELECT DISTINCT ?class
WHERE {
?s ?p ?attr .
FILTER regex(?attr , "Emri") .
?s <http://www.w3.org/TR/html4/Class1> ?class .
it should after the FILTER command initialize ?s = _:b0 , but it doesn't?
Hope for any support.
