Question

我对WikiData有以下请求。它可以正常使用，但我希望将结果限制为一部分城市（在这种情况下为“commune de France”）。

请求返回任何感兴趣的地方（包括河流“Hérin”，这不是我的意图），我需要做DISTINCT以避免与我添加的“城市”联合。

 SELECT DISTINCT ?place ?placeLabel ?location WHERE {

   # Use the around service
   SERVICE wikibase:around { 
     # Looking for items with coordinate locations(P625)
     ?place wdt:P625 ?location . 

     # That are in a circle with a centre of with a point
     bd:serviceParam wikibase:center "Point(4.8,44.32)"^^geo:wktLiteral   . 
     # Where the circle has a radius of 20km
     bd:serviceParam wikibase:radius "20" . 
     bd:serviceParam wikibase:distance ?distance .
   } .

   ?place wdt:P31/wdt:P279* ?city .

   # Use the label service to get the English label
   SERVICE wikibase:label {
   bd:serviceParam wikibase:language "en" . 
   }
}
ORDER BY ?distance

Try this query online

是否有人可以帮助我选择具有“P31”属性的地方（我认为像wdt:P31/wdt:P279* wd:Q515这样的想法会很完美）。谢谢你的帮助。

Answer 1

只需将?city替换为wd:Q484170（Try it here）：

 SELECT DISTINCT ?distance ?place ?placeLabel ?location WHERE {

   # Use the around service
   SERVICE wikibase:around { 
     # Looking for items with coordinate locations(P625)
     ?place wdt:P625 ?location . 

     # That are in a circle with a centre of with a point
     bd:serviceParam wikibase:center "Point(4.8,44.32)"^^geo:wktLiteral   . 
     # Where the circle has a radius of 20km
     bd:serviceParam wikibase:radius "20" . 
     bd:serviceParam wikibase:distance ?distance .
   } .

   ?place wdt:P31/wdt:P279* wd:Q484170.

   # Use the label service to get the English label
   SERVICE wikibase:label {
   bd:serviceParam wikibase:language "en" . 
   }
}
ORDER BY ?distance

如何在wikidata周围的城市周围找到城市？

1 个答案: