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Virtuoso is a high-performance and scalable Multi-Model RDBMS, Data Integration Middleware, Linked Data Deployment, and HTTP Application Server Platform
I use Linked Data Views and I observed that some SPARQL queries are not evaluated correctly if they contain string literals with the xsd:string datatype. Without this datatype (i.e., if...
## Problem We are currently experiencing a problem when storing different numerical datatypes. When a user of us pushes an integer-like number as e.g. a xsd:decimal, such a number will...
Using `ErrorLogLevel` in `virtuoso.ini`, I can change the verbosity of `virtuoso.log`. However it does not have any effect on the console and thus on the Docker / Docker compose log....
I use `ld_dir_all()` together with `rdf_loader_run()` to successfully load several files. However when I include a file with a number, it gives me an error. For example, the turtle file...
I'm trying to get a top type count for DBpedia (Virtuoso version 07.00.3207 on Linux (x86_64-redhat-linux-gnu), Single Server Edition): ``` select ?type count(distinct ?s) as ?c where { ?s a...
I use IRIs in my RDF and fct to browse and do content negotiation, e.g. for `text/turtle`. However, there is an issue with inconsistent handling of unicode characters in `Location:`...
I have Microsoft academic graph loaded in a local Virtuoso endpoint. The graph is 10B+ triples. When I try to use `isql` to execute SPARQL query like — `/isql 127.0.0.1:1111...
The `is_silent` parameter raises an error when set to `0` as expected given the parameter name. However, the web page as cited below is written the other way around: >DB.DBA.RDF_GRAPH_GROUP_CREATE...
We're having problems with DELETE DATA queries and language-tagged strings. It seems batching statements doesn't work as expected. Sample data set: ``` INSERT DATA { GRAPH { "hello 1"@nl. }...
I have multiple named graphs loaded into the latest develop Virtuoso. If I do the following query: ``` prefix : prefix map: select ?MRN where { graph {?k map:mrn ?MRN}...
