Yes, the property is linked to all its predicates, e. g.
wikibase:directClaim for the wdt: version or wikibase:claim for the p:
version. In this query I’m using wikibase:claim instead of
wikibase:directClaim to ensure that all statements are counted, not just
best-rank ones:
SELECT ?property (COUNT(?statement) AS ?count) WHERE {
?property p:P2302/ps:P2302 wd:Q52712340;
wikibase:claim ?p.
?entity ?p ?statement.
}
GROUP BY ?property
ORDER BY DESC(?count)
mw:Wikibase/Indexing/RDF_Dump_Format has longer lists of these
predicates, in the Properties [1] and Predicates [2] sections.
Cheers, Lucas
[1]:
https://www.mediawiki.org/wiki/Wikibase/Indexing/RDF_Dump_Format#Properties
[2]:
https://www.mediawiki.org/wiki/Wikibase/Indexing/RDF_Dump_Format#Predicates
On 9/3/18 7:54 PM, Adrian Bielefeldt wrote:
Hello everyone,
I have the following pattern in a SPARQL query:
?s ps:P2302 wd:Q52712340.
?item p:P2302 ?s.
It should give me all properties constrained by a specific constraint,
which works. Based on this I would like to find out how many statements
have these properties. However, ?item has the wd-prefix. To use it in
?subject ?item ?object,
I would need to "transform" it into the same ID but with the wdt-prefix.
Is this possible in any way?
Greetings
Adrian
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