query-14976c5281367dfbf3f464a35e4d06a3
TODO
Use at
- https://query.wikidata.org/sparql
PREFIX wikibase: <http://wikiba.se/ontology#>
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX bd: <http://www.bigdata.com/rdf#>
SELECT ?item ?itemLabel ?errata ?errataLabel
WHERE
{
?item wdt:P2507 ?errata. #item has a P2507
filter not exists {?errata wdt:P921 ?item .} #oh woe; the errata does not point back to the item
SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
}
Query found at
- https://www.wikidata.org/wiki/User:Trilotat/SPARQL
- https://www.wikidata.org/wiki/Wikidata:Request_a_query/Archive/2019/01
graph TD
classDef projected fill:lightgreen;
classDef literal fill:orange;
classDef iri fill:yellow;
v1("?errata"):::projected
v2("?item"):::projected
c4(["bd:serviceParam"]):::iri
c6(["#91;AUTO_LANGUAGE#93;,en"]):::literal
f0[["not "]]
subgraph f0e0["Exists Clause"]
e0v1 --"wdt:P921"--> e0v2
e0v1("?errata"):::projected
e0v2("?item"):::projected
end
f0--EXISTS--> f0e0
f0 --> v1
f0 --> c1
f0 --> v2
v1 --"wdt:P921"--> v2
v2 --"wdt:P2507"--> v1
subgraph s1["http://wikiba.se/ontology#label"]
style s1 stroke-width:4px;
c4 --"wikibase:language"--> c6
end