query-24a8edb3f1934c1da0cb194aec87886b

rq turtle/ttl

Queries with FILTER NOT EXISTSTo work fine, queries with “filter not exists” often seem to have to be rewritten. The “filter not exists” clause seems to often be inefficient for unclear reasons. For example a query like this one, featured articles in frwiki which does not exists at all on enwiki times out expressed as a query with “filter not exists” Requêtes avec FILTER NOT EXISTS To work fine, queries with “filter not exists” often seem to have to be rewritten. The “filter not exists” clause seems to often be inefficient for unclear reasons. For example a query like this one, featured articles in frwiki which does not exists at all on enwiki times out expressed as a query with “filter not exists” Queries with FILTER NOT EXISTS To work fine, queries with “filter not exists” often seem to have to be rewritten. The “filter not exists” clause seems to often be inefficient for unclear reasons. For example a query like this one, featured articles in frwiki which does not exists at all on enwiki times out expressed as a query with “filter not exists” Queries met FILTER NOT EXISTSOm goed te werken, lijken queries met "filter not exists" vaak opnieuw te moeten worden geschreven. Deze clausule lijkt vaak ondoeltreffend om onduidelijke redenen. Bijvoorbeeld een query als deze, met artikelen in frwiki die helemaal niet bestaat op enwiki geeft een time-out als de query de clausule "filter not exists" bevat TODO Queries with FILTER NOT EXISTS To work fine, queries with “filter not exists” often seem to have to be rewritten. The “filter not exists” clause seems to often be inefficient for unclear reasons. For example a query like this one, featured articles in frwiki which does not exists at all on enwiki times out expressed as a query with “filter not exists” Запити з FILTER NOT EXISTSДля нормальної роботи запити з «filter not exists» часто потрібно переписувати. The “filter not exists” clause seems to often be inefficient for unclear reasons. For example a query like this one, featured articles in frwiki which does not exists at all on enwiki times out expressed as a query with “filter not exists” Queries with FILTER NOT EXISTS To work fine, queries with “filter not exists” often seem to have to be rewritten. The “filter not exists” clause seems to often be inefficient for unclear reasons. For example a query like this one, featured articles in frwiki which does not exists at all on enwiki times out expressed as a query with “filter not exists”

Use at

PREFIX wikibase: <http://wikiba.se/ontology#>
PREFIX schema: <http://schema.org/>
select ?articleFr ?item ?itemLabel ?some ?someLabel {
    select * {?articleFr schema:about ?item ;
             wikibase:badge ?some ;
             schema:isPartOf <https://fr.wikipedia.org/>

    filter not exists {
      ?articleEn schema:about ?item ;
               schema:isPartOf <https://en.wikipedia.org/>
    }
   }
}

Query found at

graph TD classDef projected fill:lightgreen; classDef literal fill:orange; classDef iri fill:yellow; v1("?articleEn") v3("?articleFr"):::projected v2("?item"):::projected v4("?some"):::projected c3([https://en.wikipedia.org/]):::iri c5([https://fr.wikipedia.org/]):::iri f0[["not "]] subgraph f0e0["Exists Clause"] e0v1 --"schema:about"--> e0v2 e0v1 --"schema:isPartOf"--> e0c3 e0v1("?articleEn"):::projected e0v2("?item"):::projected e0c3([https://en.wikipedia.org/]):::iri end f0--EXISTS--> f0e0 f0 --> v1 f0 --> c1 f0 --> v2 f0 --> c2 f0 --> c3 v1 --"schema:about"--> v2 v1 --"schema:isPartOf"--> c3 v3 --"schema:about"--> v2 v3 --"wikibase:badge"--> v4 v3 --"schema:isPartOf"--> c5