On Wed, 2008-10-01 at 21:48 +0700, Ivan Mikhailov wrote: > Sergio, > > On commercial Virtuoso I get more informative diagnostics, than a silent > crash:
Good to know it. > Variable 'v1' is used in the query result set but not assigned. > Ditto ?v2. ?v2 is not reported only because the compiler has no way to > report more than one error. That's probably an error of mine rewriting the query on the fly. The right one is: INSERT INTO GRAPH <http://localhost/new> { _:v rdf:type ns:Class . _:v ns:prop1 ?v2 . ?v1 ns:prop2 _:v . _:v ns:prop2 ns:Instance } FROM <http://localhost/> WHERE { { SELECT ?v1 ?v2 count(?post) as ?posts count(?reply) as ?replies WHERE { ?v1 rdf:type sioc:User . ?v2 sioc:has_subscriber ?v1 . ?v2 rdf:type sioc:Forum . ?v1 sioc:creator_of ?post . OPTIONAL { ?reply sioc:reply_of ?post . } } } FILTER (?replies > (?posts-?replies)) } Can you check it, please? We checked, and switching to a SELECT/CONSTRUCT works fine, but not with an INSERT. > I'll fix VOS and send a patch that will prevent crash. Thanks. Best, -- Sergio Fernández - sergio.fernan...@fundacionctic.org R&D Deparment CTIC Foundation - www.fundacionctic.org Phone: +34 984 29 12 12 Fax: +34 984 39 06 12 Edificio Centros Tecnológicos Parque Científico Tecnológico 33203 Cabueñes - Gijón - Asturias - Spain
