Re: Querying Named Graph using SPARQL

The spec is correct.  The query Axel gave should produce a list of named
graphs in the dataset.

If an implementation does not interpret this query correctly this is an
implementation bug and people should file bug reports through the
appropriate channels for the implementation(s) in question.


On 8/13/13 11:21 AM, "David Booth" <> wrote:

>Hi Axel,
>That doesn't work in Sesame 2.7.1 at least, apparently because ?G is not
>bound, even though there is one solution.  The SPARQL 1.1 spec says:
>The group pattern:
>   { }
>matches any graph (including the empty graph) with one solution that
>does not bind any variables.
>Is this a bug in the spec?
>On 08/13/2013 11:48 AM, Axel Polleres wrote:
>> Hi Quentin,
>> how about just
>>   SELECT ?G WHERE { GRAPH ?G {} }
>> (no need to dump all triples, if the only concern is which ?G exist)
>> BTW, may be the list you wanted to use.
>> best,
>> Axel

Received on Tuesday, 13 August 2013 18:25:30 UTC