query-59ab195642ad1720c27f9a325e131007

Items having a sole instance of (P31)

Use at

https://query.wikidata.org/sparql

PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX wd: <http://www.wikidata.org/entity/>
SELECT ?item (COUNT(?value) AS ?nb_values)  WHERE {
  ?item wdt:P31 ?gare_march, ?value.
  FILTER(?gare_march = wd:Q55493)
}
GROUP BY ?item
HAVING (?nb_values = 1 )

Query found at

https://www.wikidata.org/wiki/User:Bouzinac/Data_quality

graph TD classDef projected fill:lightgreen; classDef literal fill:orange; classDef iri fill:yellow; v2("?gare_march") v3("?item"):::projected v5("?nb_values") v4("?value"):::projected f0[["?nb_values = '1^^xsd:integer'"]] f0 --> v5 f1[["?gare_march = 'wd:Q55493'"]] f1 --> v2 v3 --"wdt:P31"--> v2 v3 --"wdt:P31"--> v4 bind3[/"count(?value)"/] v4 --o bind3 bind3 --as--o v5