query-226ce6000d1dd79364f110e447cadd41
nioshtic-with-proquest-document-iddata refresh rate: 3600 preferred output format: Table query title: Identifier map: ProQuest document ID with or without NIOSHTIC2-ID
Use at
- https://query.wikidata.org/sparql
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
SELECT ?item ?ProQuest_document_ID ?NIOSHTIC2_ID WHERE {
?item wdt:P6572 ?ProQuest_document_ID.
OPTIONAL { ?item wdt:P2880 ?NIOSHTIC2_ID. }
}
Query found at
graph TD
classDef projected fill:lightgreen;
classDef literal fill:orange;
classDef iri fill:yellow;
v3("?NIOSHTIC2_ID"):::projected
v2("?ProQuest_document_ID"):::projected
v1("?item"):::projected
v1 --"wdt:P6572"--> v2
subgraph optional0["(optional)"]
style optional0 fill:#bbf,stroke-dasharray: 5 5;
v1 -."wdt:P2880".-> v3
end