Thanks, that did the trick.
> -----Ursprüngliche Nachricht----- > Von: Milorad Tosic [mailto:[email protected]] > Gesendet: Montag, 02. November 2015 12:35 > An: [email protected] > Betreff: Re: use aggregates in CONSTRUCT query > > Peter, > A pragmatic way would be to use a nested SELECT first, where you can define > aggregates that you would latter use in CONSTRUCT as usual. > > Regards,Milorad > > > From: Martynas Jusevičius <[email protected]> > To: [email protected] > Sent: Monday, November 2, 2015 12:23 PM > Subject: Re: use aggregates in CONSTRUCT query > > You can, but they need to go in the WHERE part, not CONSTRUCT. And you > need to GROUP BY first: > http://rdf.myexperiment.org/howtosparql?page=GROUP%20BY > > > > On Mon, Nov 2, 2015 at 12:20 PM, Wetz Peter <[email protected]> > wrote: > > This is more of a SPARQL question, so sorry, if it not perfectly fits here: > > I wonder, if it's possible to use aggregates in SPARQL CONSTRUCT queries. > > > > For instance, I have the following query: > > > > CONSTRUCT { > > ?s ei:number ?number . > > } > > FROM <http://example.org> > > WHERE { > > ?s ei:number ?number > > } > > > > However, since `?number` has multiple solutions, I would like to calculate > the aggregate. I tried it like this: > > > > CONSTRUCT { > > ?s ei:number AVG(?number) . > > } > > FROM <http://example.org> > > WHERE { > > ?s ei:number ?number > > } > > > > The [SPARQL Query Validator][1] raises the following error: > > > > Encountered " "avg" "AVG "" at line 3, column 14. > > Was expecting one of: > > ... > > "true" ... > > "false" ... > > ... > > "(" ... > > ... > > "[" ... > > > > Hence, my question is: (How) can I use aggregates in SPARQL CONSTRUCT > queries efficiently? > > >
