Hello Pierre,
All 4 queries are now fixed in commercial version of Virtuoso and fixes
are on their way to the Virtuoso Open Source snapshot.
The only note is that
> sparql select distinct ?g where {graph ?g {?s ?p ?o}} order by (?g)
> limit 1 offset 2;
should actually return nothing.
http://www.w3.org/TR/rdf-sparql-query/#modOffset says that "An OFFSET of
zero has no effect", so "limit 1 offset 0" should return the first row
of the 'unlimited' result set, "limit 1 offset 0" should return second
row out of two and "limit 1 offset 2" is after end of result set.
Best Regards,
Ivan Mikhailov,
OpenLink Software.
On Tue, 2008-02-05 at 17:23 +0100, Pierre De Wilde wrote:
> After a fresh installation of VOS 5.0.4, I ran the following queries:
>
>
> 1. OK
> sparql select distinct ?g where {graph ?g {?s ?p ?o}} order by (?g);
> Result:
> http://localhost:8890/DAV
> http://www.openlinksw.com/schemas/virtrdf#
>
>
> 2. NOK: name is repeated
> sparql select ?g count(?g) where {graph ?g {?s ?p ?o}} order by (?g);
> Result:
> http://localhost:8890/DAV
> 2125
> http://localhost:8890/DAV
> 895
>
>
> 3. NOK: should be http://localhost:8890/DAV
> sparql select distinct ?g where {graph ?g {?s ?p ?o}} order by (?g)
> limit 1;
>
> Result:
> http://www.openlinksw.com/schemas/virtrdf#
>
>
> 4. NOK: should be http://www.openlinksw.com/schemas/virtrdf#
> sparql select distinct ?g where {graph ?g {?s ?p ?o}} order by (?g)
> limit 1 offset 2;
> Result:
> -
>
>
> Pierre
>
