Hi Christian,
NOT EXISTS is supported already.
E.g., right now at lod.openlinksw.com/sparql
both
SELECT count(*) WHERE {?s ?p "Novosibirsk" filter not exists { ?s ?p
"Новосибирск" } }
and
SELECT count(*) WHERE { { ?s ?p "Novosibirsk" } minus { ?s ?p
"Новосибирск" } }
return 313,
both
SELECT c
Hi Hugh,
thanks for your quick answer! So I assume that there is no possibility to
execute SPARQL 1.1 standard queries over virtuoso as of now.
IMO, it would be a huge benefit, if you implemented native support of SPARQL
1.1 standard syntax in virtuoso's SPARQL enpoint not just for me.
A recent
Hi Christian
Virtuoso does not support “NOT EXIST” but does have its own built in function:
FILTER (!bif:exists ((select (1) ...)))
See the following example on usage:
http://docs.openlinksw.com/virtuoso/rdfsparqlrule.html#rdfsparqlruleexamples6
LET is a Jena specific keyword
Dear all,
I am having trouble using certain keywords of Jena ARQ to query virtuoso
over the Virtuoso Jena Provider.
In particular, my queries require the use of the keywords LET, NOT EXISTS,
and IRI.
For example I tried to execute the following Code:
VirtGraph set = new VirtGraph
