How can I get all chairpersons, which are still holding this job (where the predicate has no end date?).
My current version returns all chairpersons:
SELECT ?chairperson ?x WHERE {
?university wdt:P488 ?chairperson.
}
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2`SELECT ?university ?chairperson WHERE { ?university p:P488 ?stmt. ?stmt ps:P488 ?chairperson filter not exists {?stmt pq:P582 ?end} }` - you should also add some type triple pattern for universities I guess – UninformedUser Apr 16 '19 at 16:54
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Thanks @AKSW, that was exactly what I was looking for. That was only a (minimal) example, in the original version there are already type triple ;) – Querenker Apr 16 '19 at 18:14
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@AKSW seems you should convert your comment to an answer – Tomasz Pluskiewicz Apr 17 '19 at 12:17