Re: [Virtuoso-users] Deleting data from a graph

[Kingsley Idehen]

On 3/30/15 3:49 PM, Eliza Chan wrote:

Hi Lorena,

Thanks for the help.
The command you gave me deletes the entire graph. Is it correct?


Regards,
Eliza

Is there a way to delete just a portion of a graph that's specified in a file?

Example:

WITH <{named-graph-iri}>
DELETE {<#this> <#relatedTo> <#that> . }
WHERE {<#this> <#relatedTo> <#that> . }

OR:

DELETE { GRAPH  <{named-graph-iri}> {<#this> <#relatedTo> <#that> . } }
WHERE { GRAPH  <{named-graph-iri}> {<#this> <#relatedTo> <#that> . } }

[1] http://www.w3.org/TR/sparql11-update/#deleteInsert -- SPARQL 1.1 INSERT

--
Regards,

Kingsley Idehen 
Founder & CEO
OpenLink Software
Company Web: http://www.openlinksw.com
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A Named Graph is an internal Virtuoso Document Identifier. A file is a document. I think you are looking for the ability to remove specific RDF statements from a Virtuoso hosted (and managed) Named RDF Document (i.e., Named Graph)? If so, then simply use SPARQL 1.1. DELETE.

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