view tests/misc-queries/test-query-dense-output @ 185:3287df4588dd

Warn for this potential error case

PREFIX vamp: <http://purl.org/ontology/vamp/>
PREFIX mo: <http://purl.org/ontology/mo/>
PREFIX af: <http://purl.org/ontology/af/>

SELECT ?signal_source ?feature_signal_type ?value
FROM <file:///share/music/wav/12-You Look So Fine.n3>

WHERE {
      ?signal mo:available_as ?signal_source .
      ?signal a mo:Signal .
      ?signal af:signal_feature ?feature .
      ?feature a ?feature_signal_type.
      ?feature af:value ?value .
}