Hi Peter, Are you able to provide script you amended which we can load locally to see this error and would be easier to diagnose ?
Best Regards Hugh Williams Professional Services OpenLink Software, Inc. // http://www.openlinksw.com/ 10 Burlington Mall Road, Suite 265, Burlington MA 01803 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 16 May 2012, at 07:25, Peter Secomb wrote: > Hi everyone, > > I've deployed a fresh Virtuoso 6.1.5 installation. I'm using the default > demo.demo.* to generate RdfView of Northwind data. > > Specifically I've generated RdfViews for demo.demo.Customers and > demo.demo.Employees. In each case I used default wizard through Linked Data > -> Views to generate the code. I made one change - replacing all instances > of Demo# with Customers# or Employees# in order to split each table into its > own graph for testing purposes. > > I've now run into the following issues: > > On the following query I run into an SQL error: > > Virtuoso 37000 Error SP031: SPARQL compiler: Internal error: The SPARQL > optimizer has failed to process the query with reasonable quality. The > resulting SQL query is abnormally long. Please paraphrase the SPARQL query. > select * > where { > graph ?g { ?class a ?entity; ?attribute ?value } > } > > Restricting the above with a FROM NAMED or specifying ?entity or ?g as < ... > > makes the query work without issue. In the following query I have the same > problem: > > prefix delta: <http://localhost:8890/ontology/rdfviews/> > prefix demo: <http://localhost:8890/schemas/Demo/> > > select * > where { > ?s a delta:Delta ; delta:Entity ?entity ; delta:Attribute ?attribute ; > delta:AttributeValue ?deltaValue . > graph ?g { ?class a ?entity; ?attribute ?value } > filter(xsd:string(?value) > xsd:string(?deltaValue)) > > } > LIMIT 10 OFFSET 0 > > For the above query I've created a graph containing information to use as a > delta. The delta:Entity should equal the ?entity in ?class a ?entity. This > query doesn't work with the same error as above. Again, adding FROMs or > specify ?entity makes the query work. > > Does anyone have any thoughts on this? > > Cheers, > Peter Secomb > clearbluewater.com.au > ------------------------------------------------------------------------------ > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. > http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/_______________________________________________ > Virtuoso-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/virtuoso-users
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