query-4cacbe971bf91698db59e1c2a34b0ec9

rq turtle/ttl

Query for non-existent labelsHi experts! Is it possible to query for items that don't have a label in a certain language? For example, I'm looking for first names without label in English. I tried it by using (with the standard prefixes):

Use at

PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX wd: <http://www.wikidata.org/entity/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
SELECT ?name ?name_label WHERE {
  ?name wdt:P31/wdt:P279* wd:Q202444 .
  optional {
    ?name rdfs:label ?name_label filter (!lang(?name_label) = "en")
  }
} LIMIT 10

Query found at

graph TD classDef projected fill:lightgreen; classDef literal fill:orange; classDef iri fill:yellow; v2("?name"):::projected v1("?name_label"):::projected a1((" ")) c4(["wd:Q202444"]):::iri v2 --"wdt:P31"--> a1 a1 --"wdt:P279"--> c4 subgraph optional0["(optional)"] style optional0 fill:#bbf,stroke-dasharray: 5 5; v2 -."rdfs:label".-> v1 end