SELECT ?class (COUNT(?subject) as ?classCount)
WHERE {
?subject ?predicate ?object.
?subject rdf:type ?class .
}
GROUP BY ?class
ORDER BY DESC(?classCount)
如果删除“？subject？predicate？object。”，查询结果将不同。我了解它们应该相同：
Finding all triples with a 'rdf:type' relationship. no other conditions.
但是它们产生不同的结果。为什么会这样？