Re: [Virtuoso-users] SPARQL OPTIONAL performance

2014-03-21 Thread Kingsley Idehen
On 3/21/14 11:54 AM, ghirardi nicola wrote: I have this kind of queries that do not perform as expected (transaction timeout usually). Here an example on dbpedia: CONSTRUCT { ?p ?o. ?sub ?p_sub ?o_sub. ?type ?p_type ?o_type. } where {

[Virtuoso-users] SPARQL OPTIONAL performance

2014-03-21 Thread ghirardi nicola
I have this kind of queries that do not perform as expected (transaction timeout usually). Here an example on dbpedia: CONSTRUCT { ?p ?o. ?sub ?p_sub ?o_sub. ?type ?p_type ?o_type. } where { ?p ?o OPTIONAL

Re: [Virtuoso-users] Strange result from SPARQL function st_within

2014-03-21 Thread Frans Knibbe | Geodan
Hello Hugh, Thank you for the explanation. It confirms my observations. With extended functionality in the next release, do you mean that the actual haystack shape will be used instead of its bounding box, like its says in the documentation of the function st_within? And can we assume that s