query-7d4d0b5bc9219a01554e886bdd976581
Finding scientists who were born or died in Berlin 18:24, 4 March 2017 (UTC)) talk (ShyamalI tried to alter an existing query with the following (only births in this case) but it produced no results. What am I doing wrong? SELECT ?item ?dob WHERE { { ?item wdt:P19 wd:Q64. } UNION { ?item wdt:P19 ?pob. ?pob wdt:P131* wd:Q64. } ?item wdt:P279 wd:Q901. OPTIONAL { ?item wdt:P569 ?dob. } } ORDER BY ?dob LIMIT 4000
Use at
- https://query.wikidata.org/sparql
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX wd: <http://www.wikidata.org/entity/>
SELECT ?item ?dob WHERE {
{ ?item wdt:P19 wd:Q64. }
UNION
{
?item wdt:P19 ?pob.
?pob wdt:P131* wd:Q64.
}
?item wdt:P106 wd:Q901.
OPTIONAL { ?item wdt:P569 ?dob. }
}
ORDER BY ?dob
LIMIT 4000
Query found at
graph TD
classDef projected fill:lightgreen;
classDef literal fill:orange;
classDef iri fill:yellow;
v1("?dob"):::projected
v2("?item"):::projected
v3("?pob")
c5(["wd:Q901"]):::iri
c2(["wd:Q64"]):::iri
subgraph union0[" Union "]
subgraph union0l[" "]
style union0l fill:#abf,stroke-dasharray: 3 3;
v2 --"wdt:P19"--> v3
v3 --"wdt:P131"--> c2
end
subgraph union0r[" "]
style union0r fill:#abf,stroke-dasharray: 3 3;
v2 --"wdt:P19"--> c2
end
union0r <== or ==> union0l
end
v2 --"wdt:P106"--> c5
subgraph optional0["(optional)"]
style optional0 fill:#bbf,stroke-dasharray: 5 5;
v2 -."wdt:P569".-> v1
end