- From: Andy Seaborne <andy.seaborne@talis.com>
- Date: Fri, 08 Jan 2010 09:58:20 +0000
- To: Paul Gearon <gearon@ieee.org>
- CC: SPARQL Working Group <public-rdf-dawg@w3.org>
On 07/01/2010 9:06 PM, Paul Gearon wrote:
> On Wed, Dec 23, 2009 at 6:33 AM, Andy Seaborne<andy.seaborne@talis.com> wrote:
>> ISSUE-20
...
>> It can show up in query in
>> SELECT * { GRAPH ?g {...} }
>
> Just to be clear, we expect:
>
> SELECT ?g { GRAPH ?g { ?s ?p ?o } }
>
> to only return graphs with something in them, right? I suppose this
> means there's no standard way to query for the existence of an empty
> graph.
The simplest would be:
SELECT ?g { GRAPH ?g { } }
Andy
Received on Friday, 8 January 2010 09:58:43 UTC