Greetings,
I am running the following query on Virtuoso (7.1.0) SPARQL endpoint.
********************************************************************************
select (?o1 as ?initialseed), ?begin, ?end, (count(?mid)+1 as ?length)
where {
GRAPH ?g
{
?begin <http://test.edu/abc/vocab/getInfectedBy> ?o1.
?end <http://test.edu/abc/vocab/getInfectedBy>* ?mid.
?mid <http://test.edu/abc/vocab/getInfectedBy>* ?begin.
}
{
select ?o1, ?o2, ?e
where{
GRAPH ?g1
{
?s <http://test.edu/abc/vocab/dendrogram_infector_pid> ?o1.
?s <http://test.edu/abc/vocab/dendrogram_infectee_pid> ?o2.
?s <http://test.edu/abc/vocab/dendrogram_iteration>
'0'^^xsd:decimal.
?s <http://test.edu/abc/vocab/dendrogram_exposureday> ?e.
?s1 <http://test.edu/abc/vocab/contactnetwork_pid1> ?o1.
?s1 <http://test.edu/abc/vocab/contactnetwork_pid2> ?o2.
?s1 <http://test.edu/abc/vocab/contactnetwork_acttype1>
'5'^^xsd:decimal.
?s1 <http://test.edu/abc/vocab/contactnetwork_acttype1>
'5'^^xsd:decimal
}
}ORDER BY ASC(?e) LIMIT 1
}
}GROUP BY ?o1 ?begin ?end
***********************************************************************************
It is giving me following error.
************************************
Virtuoso 37000 Error SP031: SPARQL compiler: Variable '_::trans_subj_7_1'
is used in subexpressions of the query but not assigned
***********************************
In the query instead of "GRAPH ?g" if I use FROM clause with graph URI
then query works fine. However I need generic "GRAPH ?g." Please let me
know how I can fix it.
Thank you.
Regards,
S.M.Shamimul Hasan
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