SPARQLLoad[from]
is an update operator that can be applied to an RDFStore , which loads the graph located at from into the default graph.
SPARQLLoad[fromto]
loads the graph into the graph identified by to.
SPARQLLoad
SPARQLLoad[from]
is an update operator that can be applied to an RDFStore , which loads the graph located at from into the default graph.
SPARQLLoad[fromto]
loads the graph into the graph identified by to.
Details and Options
- SPARQLLoad can be used in SPARQLExecute to load data into a SPARQL endpoint.
- from is usually a URL or a File that contains the graph.
- Data from the destination graph is not removed.
Examples
Basic Examples (1)
Needs["GraphStore`"]Data about countries:
countryStore = ImportString["
prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>
prefix wa: <http://www.wolframalpha.com/input/?i=>
prefix ex: <http://example.org/>
wa:Entity%5B%22Country%22%2C%22Spain%22%5D
rdfs:label \"Spain\"@en ;
ex:population 46528024 .
wa:Entity%5B%22Country%22%2C%22Hungary%22%5D
rdfs:label \"Hungary\"@en ;
ex:population 9778371 .
", "TriG"]Create a "linkset" that links Wolfram and Wikidata entities:
linkFile = File[CreateFile["links.ttl"]];WriteString[linkFile, "
prefix wa: <http://www.wolframalpha.com/input/?i=>
prefix wd: <http://www.wikidata.org/entity/>
prefix owl: <http://www.w3.org/2002/07/owl#>
wa:Entity%5B%22Country%22%2C%22Spain%22%5D owl:sameAs wd:Q29 .
wa:Entity%5B%22Country%22%2C%22Hungary%22%5D owl:sameAs wd:Q28 .
"]Load the linkset into the default graph:
countryStore = countryStore//SPARQLLoad[linkFile]Query the population of Hungary using its Wikidata ID (Q28):
countryStore//SPARQLQuery["
prefix wd: <http://www.wikidata.org/entity/>
prefix owl: <http://www.w3.org/2002/07/owl#>
prefix ex: <http://example.org/>
SELECT * WHERE {
wd:Q28 ^owl:sameAs / ex:population ?population .
}
"]Delete the linkset:
DeleteFile[linkFile]See Also
Related Guides
Text
Wolfram Research (2019), SPARQLLoad, Wolfram Language function, https://reference.wolfram.com/language/GraphStore/ref/SPARQLLoad.html.
CMS
Wolfram Language. 2019. "SPARQLLoad." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/GraphStore/ref/SPARQLLoad.html.
APA
Wolfram Language. (2019). SPARQLLoad. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/GraphStore/ref/SPARQLLoad.html
BibTeX
@misc{reference.wolfram_2026_sparqlload, author="Wolfram Research", title="{SPARQLLoad}", year="2019", howpublished="\url{https://reference.wolfram.com/language/GraphStore/ref/SPARQLLoad.html}", note=[Accessed: 19-August-2026]}
BibLaTeX
@online{reference.wolfram_2026_sparqlload, organization={Wolfram Research}, title={SPARQLLoad}, year={2019}, url={https://reference.wolfram.com/language/GraphStore/ref/SPARQLLoad.html}, note=[Accessed: 19-August-2026]}