Hi,
the Vakantieland people sent me a SPARQL query that crashes the store
(using V6.1 on Linux 64 bit, DBpedia loaded). Error is a segmentation fault.
The query was exactly like this (it came from Vakantieland, I tried it
on a store with DBpedia loaded, it even is supposed to crash an empty
store):
SELECT DISTINCT *
FROM <sampleGraph1>
FROM <sampleGraph2>
WHERE {
<http://vakantieland.nl/model/pois/ecodrome>
<http://www.holygoat.co.uk/owl/redwood/0.1/tags/taggedWithTag> ?uri .
<http://vakantieland.nl/model/pois/ecodrome> ?property ?uri .
}
Below are three queries that work,
regards,
Sebastian
SELECT DISTINCT *
FROM <sampleGraph1>
FROM <sampleGraph2>
WHERE {
<http://vakantieland.nl/model/pois/ecodrome>
<http://www.holygoat.co.uk/owl/redwood/0.1/tags/taggedWithTag> ?uri .
}
SELECT DISTINCT *
FROM <sampleGraph1>
WHERE {
<http://vakantieland.nl/model/pois/ecodrome>
<http://www.holygoat.co.uk/owl/redwood/0.1/tags/taggedWithTag> ?uri .
<http://vakantieland.nl/model/pois/ecodrome> ?property ?uri .
}
SELECT DISTINCT *
FROM <sampleGraph1>
FROM NAMED <sampleGraph2>
WHERE {
<http://vakantieland.nl/model/pois/ecodrome>
<http://www.holygoat.co.uk/owl/redwood/0.1/tags/taggedWithTag> ?uri .
<http://vakantieland.nl/model/pois/ecodrome> ?property ?uri .
}
--
Dipl. Inf. Sebastian Hellmann
Department of Computer Science, University of Leipzig
Homepage: http://bis.informatik.uni-leipzig.de/SebastianHellmann
Research Group: http://aksw.org
