About: VirtTipsAndTricksGuideAllGraphs

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Date Created	2017-06-13 05:37:17.966231(xsd:dateTime)
Date Modified	2017-06-13 05:37:17.966231(xsd:dateTime)
label	VirtTipsAndTricksGuideAllGraphs
maker	WebDAV System Administrator owiki
Title	VirtTipsAndTricksGuideAllGraphs
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content	%META:TOPICPARENT{name="VirtTipsAndTricksGuide"}% ---++How to obtain all graphs Example 1. <b>Using SPARQL Query:</b> The most popular way for obtaining all graphs list, presuming every graph contains at least one triple for some rdf:type of some subject, is to execute the following query: <verbatim> SQL> SPARQL SELECT DISTINCT ?g WHERE { GRAPH ?g {?s a ?t} } </verbatim> 1. <b>Using Virtuoso built-in function:</b>: Another solution is to use the Virtuoso [[http://docs.openlinksw.com/virtuoso/fn_sparql_select_known_graphs.html][DB.DBA.SPARQL_SELECT_KNOWN_GRAPHS]] function: <verbatim> SQL> DB.DBA.SPARQL_SELECT_KNOWN_GRAPHS(); GRAPH_IRI VARCHAR _______________________________________________________________________________ http://www.openlinksw.com/schemas/virtrdf# http://localhost:8890/DAV http://localhost:8890/dataspace http://localhost:8890/dataspace/inf 4 Rows. -- 14 msec. </verbatim> ---+++Related * [[VirtTipsAndTricksGuide][Virtuoso Tips and Tricks Collection]] * [[http://docs.openlinksw.com/virtuoso/rdfperformancetuning.html#rdfperfgetallgraphs][Virtuoso Documentation]]
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atom:title	VirtTipsAndTricksGuideAllGraphs
links to	http://vos.openlinksw.com/dataspace/%28NULL%29/wiki/VOS/VirtTipsAndTricksGuide http://docs.openlinksw.com/virtuoso/fn_sparql_select_known_graphs.html http://docs.openlinksw.com/virtuoso/rdfperformancetuning.html#rdfperfgetallgraphs
atom:source	owiki's Wiki
atom:author	WebDAV System Administrator
atom:published	2017-06-13T05:37:17Z
atom:updated	2017-06-13T05:37:17Z
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