SPARQL query fail to return results from remote datasets

Virtuoso Universal Server
8

Hi

Have you tried –

SPARQL LOAD SERVICE <http://DBpedia.org/sparql> DATA

– via ISQL or –

LOAD SERVICE <http://DBpedia.org/sparql> DATA

– via SPARQL web service endpoint?

The error “Virtuoso 37000 Error SP031: SPARQL compiler: http://dbpedia.org/sparql does not support SPARQL-BI…” looks like you haven’t. More recent versions of Virtuoso detect and handle this error by running LOAD SERVICE DATA automatically – if query comes via default query service endpoint.

Older versions and associated endpoints (shipped with some VADs) require explicit call before using features not described in SPARQL 1.0