sparql - Wikidata Query Service - Bug on the 'Whose birthday is today?' SPARQL Query Examples

Question

I was playing with the SPARQL query examples. The query 'Whose birthday is today' always ends up in a QueryTimeoutException (Query deadline is expired).

However If I change the birthdate property P569 to the death date property P570, the query runs without throwing an exception.

Is there something to do to have the birth query successfully executed?

Answer 1

我认为查询对于 wikibase 服务来说可能过于繁重。如果你只是尝试通过人的属性获得所有属性，你就会成功。我尝试了以下方法：

PREFIX wikibase: <http://wikiba.se/ontology#>
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>

SELECT distinct ?name (year(?date) as ?year)  WHERE {   
    ?entityS wdt:P569 ?date .
    ?entityS wdt:P1477 ?name.
    FILTER (datatype(?date) = xsd:dateTime) 
    FILTER (month(?date) = month(now()))
    FILTER (day(?date) = day(now()))
 }