Hi Silvia,
Can you send us the whole script (insert and then select etc.)
and the version of Virtuoso Server you are using?
Best Regards,
Rumi
Hi Rumi,
Yes, I have a very similar set of triples.
Suppose you have the following:
sparql clear graph <http://mygraph.person>;
SPARQL insert in graph <http://mygraph.person>
{ <http://mygraph/person/book1> <http://mygraph/person/books> 1 .
<http://mygraph/person/book2> <http://mygraph/person/books> 2 .
<http://mygraph/person/book3> <http://mygraph/person/books> 1 .
<http://mygraph/person/book3> <http://mygraph/person/books> 3 .
<http://mygraph/person/book2> <http://mygraph/person/books> 5 };
I am trying to run this query but I still get the error:
SQLState: 37000
Message: SQ074: Line 8: SP030: SPARQL compiler, line 8: syntax error at
'HAVING' before '('
SQL>SPARQL
SELECT ?s SUM(?books) as ?total
FROM <http://mygraph.person>
WHERE
{
?s <http://mygraph/person/books> ?books .
}
HAVING (SUM(?books) > 2);
Which can be the reason? Without the 'having' clause it works pretty well.
Regards,
Silvia
s total
VARCHAR VARCHAR
_______________________________________________________________________________
http://mygraph/person/book3 4
http://mygraph/person/book2 7
2 Rows. -- 16 msec.
Best Regards,
Rumi
Thank you, Ivan fo the answer!
Unfortunately I still can not run this query
select ?s SUM(?books) as ?total
FROM <http://mygraph.person>
WHERE {?s <http://mygraph/person/books> ?books . }
having (sum(?books) > 2)
I get the following error
SQLState: 37000
Message: SQ074: Line 5: SP030: SPARQL compiler, line 5: syntax error at
'having' before '('
sparql
select ?s SUM(?books)
FROM <http://mygraph.person>
WHERE {?s <http://mygraph/person/books> ?books . }
having (sum(?books) > 2)
Do you know what the reason is? I suppose I do not use correct syntax
for HAVING or ... ?
/Silvia
There's no ?total in the scope of HAVING, but there are bindings
of ?books and the ability of using aggregates.
Best Regards,
Ivan Mikhailov
OpenLink Software
http://virtuoso.openlinksw.com
On Fri, 2010-07-02 at 11:13 +0200, Silvia Stefanova wrote:
Hello,
I would like to make a SPARQL query with aggregation with a condition
on
the result of the aggregate, e.g.:
select ?s SUM(?books) as ?total
FROM <http://mygraph.person>
WHERE {?s <http://mygraph/person/books> ?books.}
having (?total > 2) .
Would you please tell me how to make this in Virtuoso?
Regards,
Silvia
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