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:
http://www.w3.org/TR/sparql11-query/#emptyGroupPattern
[[
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?
David
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, [email protected] may be the list you wanted to use.
best,
Axel
