query-f7ebe81616af9b6563990e38b50071fb
List of Oil & Gas CompaniesHi Everyone, I was wondering if anyone can help me with a query i am trying to run via Query Service. I would like to get a dataset of all Oil & Gas companies and their name, subsidiaries, location, total assets, total reserves. Eventually i would also like to get a list of oil and gas service providers with the same parameters/columns. Anyway anyone can help me build this query or guide me on how to create it? I have tried the query below but the results were very small and not consistent (different result set every time i run the same query) or no values where returned to most of the parameters/columns i requested. thanks again for your help
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 ?petroleum_industryLabel ?subsidiaryLabel ?industryLabel ?countryLabel ?total_assets WHERE {
SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
?petroleum_industry wdt:P452 wd:Q862571.
OPTIONAL { ?petroleum_industry wdt:P452 ?industry. }
OPTIONAL { ?petroleum_industry wdt:P17 ?country. }
OPTIONAL { ?petroleum_industry wdt:P355 ?subsidiary. }
OPTIONAL { ?petroleum_industry wdt:P2403 ?total_assets. }
OPTIONAL { ?petroleum_industry wdt:P17 ?country. }
}
Query found at
graph TD
classDef projected fill:lightgreen;
classDef literal fill:orange;
classDef iri fill:yellow;
v3("?country")
v2("?industry")
v1("?petroleum_industry")
v4("?subsidiary")
v5("?total_assets"):::projected
c2(["bd:serviceParam"]):::iri
c6(["wd:Q862571"]):::iri
c4(["#91;AUTO_LANGUAGE#93;,en"]):::literal
subgraph s1["http://wikiba.se/ontology#label"]
style s1 stroke-width:4px;
c2 --"wikibase:language"--> c4
end
v1 --"wdt:P452"--> c6
subgraph optional0["(optional)"]
style optional0 fill:#bbf,stroke-dasharray: 5 5;
v1 -."wdt:P452".-> v2
end
subgraph optional1["(optional)"]
style optional1 fill:#bbf,stroke-dasharray: 5 5;
v1 -."wdt:P17".-> v3
end
subgraph optional2["(optional)"]
style optional2 fill:#bbf,stroke-dasharray: 5 5;
v1 -."wdt:P355".-> v4
end
subgraph optional3["(optional)"]
style optional3 fill:#bbf,stroke-dasharray: 5 5;
v1 -."wdt:P2403".-> v5
end
subgraph optional4["(optional)"]
style optional4 fill:#bbf,stroke-dasharray: 5 5;
v1 -."wdt:P17".-> v3
end