1,449,764
edits
Main Page: Difference between revisions
From geokb
→Publications/Documents
| Line 302: | Line 302: | ||
</sparql> | </sparql> | ||
We can build on the query for document classes to get document instances. | We can build on the query for document classes to get document instances and some of the statements we might need to use. | ||
<sparql tryit="1"> | <sparql tryit="1"> | ||
| Line 308: | Line 308: | ||
PREFIX wdt: <https://geokb.wikibase.cloud/prop/direct/> | PREFIX wdt: <https://geokb.wikibase.cloud/prop/direct/> | ||
SELECT ?item ?itemLabel | SELECT ?item ?itemLabel ?instance_ofLabel (YEAR(?publication_date) AS ?year) ?doi | ||
WHERE { | WHERE { | ||
?classes wdt:P2* wd:Q5 . # subclass of, transitive "document" | ?classes wdt:P2* wd:Q5 . # subclass of, transitive "document" | ||
?item wdt:P1 ?classes | ?item wdt:P1 ?classes ; # get entities that are instances of any of the classes | ||
wdt:P1 ?instance_of ; # get the item classification to display | |||
wdt:P7 ?publication_date ; # only get items that have a publication date | |||
wdt:P74 ?doi . # only get items that have a doi | |||
SERVICE wikibase:label { bd:serviceParam wikibase:language "en" . } | SERVICE wikibase:label { bd:serviceParam wikibase:language "en" . } | ||
} | } | ||
