How can I use the LOAD command to import RDF data?

SPARQL INSERT can be done using the LOAD command:


SPARQL INSERT INTO <..> { .... } [[FROM ...] { ... }]

SPARQL LOAD <x> [INTO <y>]

-- <ResourceURL> will be the Graph IRI of the loaded data:
SPARQL LOAD <ResourceURL> 

Examples

Load from Resource URL

In order to load data from resource URL for ex: http://www.w3.org/People/Berners-Lee/card#i , execute the following command with isql:


SQL> SPARQL LOAD <http://www.w3.org/People/Berners-Lee/card#i>;
callret-0
VARCHAR
_______________________________________________________________________________

Load <http://www.w3.org/People/Berners-Lee/card#i> into graph <http://www.w3.org/People/Berners-Lee/card#i> -- done

1 Rows. -- 703 msec.
SQL>

Load from file

  1. Create DAV collection which is visible to the public, for ex: http://localhost:8890/DAV/tmp
  2. Upload to the DAV collection a file, for example with name listall.rq and with the following content:

    SPARQL PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> PREFIX sioc: <http://rdfs.org/sioc/ns#> SELECT ?x ?p ?o FROM <http://mygraph.com> WHERE { ?x rdf:type sioc:User . ?x ?p ?o. ?x sioc:id ?id . FILTER REGEX(str(?id), "^King") } ORDER BY ?x

  3. Execute the following command from isql:

    SQL>SPARQL LOAD bif:concat ("http://", bif:registry_get("URIQADefaultHost"), "/DAV/tmp/listall.rq") into graph <http://myNewGraph.com>; callret-0 VARCHAR _______________________________________________________________________________ Load <http://localhost:8890/DAV/tmp/listall.rq> into graph <http://myNewGraph.com> -- done 1 Rows. -- 321 msec.

Directly LOAD triples using iSQL

Triples can be directly loaded into Virtuoso specifying the literal values to inserted, by executing a command of the following form from isql:


SQL>SPARQL INSERT INTO graph <http://mygraph.com>
{
  <http://myopenlink.net/dataspace/Kingsley#this>
  <http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
  <http://rdfs.org/sioc/ns#User> .

  <http://myopenlink.net/dataspace/Kingsley#this>
  <http://rdfs.org/sioc/ns#id>
  <Kingsley> .

  <http://myopenlink.net/dataspace/Caroline#this>
  <http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
  <http://rdfs.org/sioc/ns#User> .

  <http://myopenlink.net/dataspace/Caroline#this>
  <http://rdfs.org/sioc/ns#id>
  <Caroline> .
};

Related