query-445b356dedba6667e4ee08761f09ebb3
TODO
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 psn: <http://www.wikidata.org/prop/statement/value-normalized/>
PREFIX p: <http://www.wikidata.org/prop/>
PREFIX bd: <http://www.bigdata.com/rdf#>
SELECT ?countryLabel (COUNT(?item) AS ?number_of_objects) (SUM(?length) AS ?sum_length_meters) (ROUND(SUM(?length)/COUNT(?item)) AS ?average_length_meters) {
?item wdt:P31/wdt:P279* wd:Q2354973 . # to get all subclasses (types) of tunnels, change this to wd:Q44377 .
?item wdt:P17 ?country .
?item p:P2043 [ psn:P2043 [ wikibase:quantityAmount ?length ] ] . # psn translates all values for length to a common unit, i.e. meters
SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
}
GROUP BY ?countryLabel
ORDER BY DESC(?number_of_objects) ?countryLabel
Query found at
graph TD
classDef projected fill:lightgreen;
classDef literal fill:orange;
classDef iri fill:yellow;
v7("?average_length_meters")
v4("?country")
v2("?countryLabel"):::projected
v3("?item"):::projected
v5("?length"):::projected
v6("?number_of_objects")
v6("?sum_length_meters")
a1((" "))
a3((" "))
a2((" "))
c9(["bd:serviceParam"]):::iri
c11(["#91;AUTO_LANGUAGE#93;,en"]):::literal
c3(["wd:Q2354973"]):::iri
v3 --"p:direct/P31"--> a1
a1 --"p:direct/P279"--> c3
v3 --"p:direct/P17"--> v4
a2 --"wikibase:quantityAmount"--> v5
a3 --"p:statement/value-normalized/P2043"--> a2
v3 --"p:P2043"--> a3
subgraph s1["http://wikiba.se/ontology#label"]
style s1 stroke-width:4px;
c9 --"wikibase:language"--> c11
end
bind4[/"count(?item)"/]
v3 --o bind4
bind4 --as--o v6
bind5[/"sum(?length)"/]
v5 --o bind5
bind5 --as--o v6
bind6[/"numeric-round( / )"/]
null --o bind6
null --o bind6
bind6 --as--o v7