Hi
The second query "ASK{GRAPH <http://GRAPH <http://graph/>>{?s ?p ?o}}” returns
false for me, see:http://demo.openlinksw.com/sparql?default-graph-uri=&qtxt=ASK%7BGRAPH+%3Chttp%3A%2F%2FGRAPH%3E%7B%3Fs+%3Fp+%3Fo%7D%7D&should-sponge=&format=text%2Fhtml&CXML_redir_for_subjs=121&CXML_redir_for_hrefs=&timeout=20000 <http://demo.openlinksw.com/sparql?default-graph-uri=&qtxt=ASK{GRAPH+%3Chttp://GRAPH%3E{?s+?p+?o}}&should-sponge=&format=text/html&CXML_redir_for_subjs=121&CXML_redir_for_hrefs=&timeout=20000> Note this is with a 3213 build whereas I note you are using a 3212 build, thus you should update you build to the open source develop/7 branch which contains the 3213 code … https://github.com/openlink/virtuoso-opensource <https://github.com/openlink/virtuoso-opensource> Best Regards Hugh Williams Professional Services OpenLink Software, Inc. // http://www.openlinksw.com/ Weblog -- http://www.openlinksw.com/blogs/ LinkedIn -- http://www.linkedin.com/company/openlink-software/ Twitter -- http://twitter.com/OpenLink Google+ -- http://plus.google.com/100570109519069333827/ Facebook -- http://www.facebook.com/OpenLinkSoftware Universal Data Access, Integration, and Management Technology Providers > On 15 May 2015, at 11:42, user701 <user...@orange.fr> wrote: > > Hi, I repost a question for which I still have not found the answer by > myself. Thanks for any help! > > > > Hi, > > > > > > When trying to know if a graph exists on a local Virtuoso RDF graph, the > > return is always "true", wether the graph already exists or not. > > > > > > I tried: > > > ASK{GRAPH <http://GRAPH>{}} > > > and > > > ASK{GRAPH <http://GRAPH>{?s ?p ?o}} > > > > > > The empty graph is known for being source of problems. What should be the > > query to do against a Virtuoso database? > > > > > > Best, > > > > > > Jibé > > > > > > > > > Some Virtuoso version info (showed at startup) > > > > > > OpenLink Virtuoso Universal Server > Version 07.20.3212-pthreads for Linux as of Mar 21 2015 > uses parts of OpenSSL, PCRE, Html Tidy > Database version 3126 > SQL Optimizer enabled (max 1000 layouts) > Compiler unit is timed at 0.000262 msec > built-in procedure "repl_undot_name" overruled by the RDBMS > > > > ------------------------------------------------------------------------------ > One dashboard for servers and applications across Physical-Virtual-Cloud > Widest out-of-the-box monitoring support with 50+ applications > Performance metrics, stats and reports that give you Actionable Insights > Deep dive visibility with transaction tracing using APM Insight. > http://ad.doubleclick.net/ddm/clk/290420510;117567292;y_______________________________________________ > Virtuoso-users mailing list > Virtuoso-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/virtuoso-users
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------------------------------------------------------------------------------ One dashboard for servers and applications across Physical-Virtual-Cloud Widest out-of-the-box monitoring support with 50+ applications Performance metrics, stats and reports that give you Actionable Insights Deep dive visibility with transaction tracing using APM Insight. http://ad.doubleclick.net/ddm/clk/290420510;117567292;y
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