Re: [Virtuoso-users] Subquery and SAMPLE keyword (SPARQL 1.1)

2011-08-03 Thread Ivan Mikhailov
Hello Houda In fresh versions of Virtuoso, you can use sql:SAMPLE() as a temporary workaround for missing SAMPLE (). SPARQL 1.1 will be supported rather sooner than later, we hope we can make it one of two implementations required by W3C policy for CR status of the spec. Best Regards, Ivan Mikha

Re: [Virtuoso-users] Subquery and SAMPLE keyword (SPARQL 1.1)

2011-08-02 Thread Hugh Williams
Hi Houda, Virtuoso does now implement the SPARQL 1.1 GROUP_CONCAT and SAMPLE aggregate functions. Note however their is a slight deviation from SPARQL 1.1 in that as the specification is not fully ratified stable, SAMPLE and GROUP_CONCAT are not added as keywords directly and need to be pref

[Virtuoso-users] Subquery and SAMPLE keyword (SPARQL 1.1)

2011-08-02 Thread Houda kr
Hi, I need to know how to return one random label (for each item) when the item has several labels (using SPARQL). I tried the following query, but it returns the same label for all persons SELECT ?person ?name WHERE { ?person a foaf:Agent . { SELECT ?name WHERE { ?person rdfs:label ?name }