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%META:TOPICPARENT{name="VirtTipsAndTricksSPARQL11FeaturesExamplesCollection"}% ---+ Virtuoso SPARQL 1.1. CLEAR Usage Example ---++What? This guide contains Virtuoso SPARQL 1.1. CLEAR Usage Example which you can run against any SPARQL endpoint that supports SPARQL 1.1 and the ability to allow a verified user perform INSERT operations. ---++Why? Simple way of clear graph data. ---++How? Here is example showcasing Virtuoso's support for this functionality: 1 Assume the following Raw Data Representation in Turtle: <verbatim> <#alice> <#name> "Alice", "Alice Foo", "A. Foo" . <#alice> <#knows> <#bob>, <#carol> . <#bob> <#name> "Bob", "Bob Bar", "B. Bar" . <#carol> <#name> "Carol", "Carol Baz", "C. Baz" . </verbatim> 1 Beautified Raw Data Representation in Turtle (from above) using Namespace Prefix: <verbatim> <#alice> <#name> "Alice" . <#alice> <#name> "Alice Foo" . <#alice> <#name> "A. Foo" . <#alice> <http://xmlns.com/foaf/0.1/knows> <#bob>, <#carol> . <#bob> <#name> "Bob" . <#bob> <#name> "Bob Bar" . <#bob> <#name> "B. Bar" . <#carol> <#name> "Carol" . <#carol> <#name> "Carol Baz" . <#carol> <#name> "C. Baz" . </verbatim> 1 Load the sample data: <verbatim> INSERT { GRAPH <urn:sparql:tests:clear> { <#alice> <#name> "Alice" . <#alice> <#name> "Alice Foo" . <#alice> <#name> "A. Foo" . <#alice> <http://xmlns.com/foaf/0.1/knows> <#bob>, <#carol> . <#bob> <#name> "Bob" . <#bob> <#name> "Bob Bar" . <#bob> <#name> "B. Bar" . <#carol> <#name> "Carol" . <#carol> <#name> "Carol Baz" . <#carol> <#name> "C. Baz" . } } </verbatim> 1 Clear the inserted data: <verbatim> SPARQL CLEAR GRAPH <urn:sparql:tests:clear>; Query result: callret-0 ANY Clear graph <urn:sparql:tests:clear> -- done No. of rows in result: 1 </verbatim> ---++Related * [[http://www.w3.org/TR/2012/PR-sparql11-update-20121108/#clear][SPARQL 1.1 CLEAR]] * [[http://www.w3.org/TR/rdf-sparql-protocol/][SPARQL Protocol (HTTP based Query Service)]] * [[VirtTipsAndTricksGuide][Virtuoso Tips and Tricks Collection]] * [[VirtTipsAndTricksSPARQL11FeaturesExamplesCollection][Virtuoso SPARQL 1.1 Usage Examples Collection]] * [[http://virtuoso.openlinksw.com/tutorials/sparql/SPARQL_Tutorials_Part_9/SPARQL_Tutorials_Part_9.html][Virtuoso SPARQL 1.1 Syntax Tutorial]] * [[http://docs.openlinksw.com/virtuoso/rdfsparql.html][Virtuoso Documentation]]
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