query-b4c31f036d822f500b232b14f3c5a3e3
Avoid duplication - geo coordsHi everyone, I'm trying to work with the query editor to improve my skills (i'm still at very base level, though :)). I was trying to extract a list of airports, with their IATA and ICAO codes, their municipality and, the most important item, geo coordinates. Now, this is the query i was able to write:
Use at
- https://query.wikidata.org/sparql
PREFIX wikibase: <http://wikiba.se/ontology#>
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX wd: <http://www.wikidata.org/entity/>
PREFIX bd: <http://www.bigdata.com/rdf#>
SELECT ?item ?itemLabel ?iata ?icao ?coord ?LocationLabel WHERE {
?item wdt:P31 wd:Q1248784.
?item wdt:P238 ?iata.
OPTIONAL {
?item wdt:P239 ?icao;
wdt:P931 ?Location;
wdt:P625 ?coord.
}
SERVICE wikibase:label { bd:serviceParam wikibase:language "en". }
}
ORDER BY ?iata
LIMIT 100
Query found at
graph TD
classDef projected fill:lightgreen;
classDef literal fill:orange;
classDef iri fill:yellow;
v4("?Location")
v5("?coord"):::projected
v1("?iata"):::projected
v3("?icao"):::projected
v2("?item"):::projected
c2(["wd:Q1248784"]):::iri
c8(["bd:serviceParam"]):::iri
c10(["en"]):::literal
v2 --"wdt:P31"--> c2
v2 --"wdt:P238"--> v1
subgraph optional0["(optional)"]
style optional0 fill:#bbf,stroke-dasharray: 5 5;
v2 -."wdt:P239".-> v3
v2 --"wdt:P931"--> v4
v2 --"wdt:P625"--> v5
end
subgraph s1["http://wikiba.se/ontology#label"]
style s1 stroke-width:4px;
c8 --"wikibase:language"--> c10
end