query-cdcd95da3407f6def0a749f79f5e4a5d

rq turtle/ttl

title:Orphaned or incorrectly linked discographies, using FILTER

credit: Daniel Eriksson on Telegram

SELECT ?discog WHERE { ?discog wdt:P31 wd:Q273057. OPTIONAL{ ?artist wdt:P358 ?discog } FILTER( !BOUND(?artist)) }

Use at

PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX wd: <http://www.wikidata.org/entity/>
#title:Orphaned or incorrectly linked discographies, using FILTER
#credit: Daniel Eriksson on Telegram
SELECT ?discog WHERE {
  ?discog wdt:P31 wd:Q273057.
  OPTIONAL{ ?artist wdt:P358 ?discog }
  FILTER( !BOUND(?artist))
}

Query found at

graph TD classDef projected fill:lightgreen; classDef literal fill:orange; classDef iri fill:yellow; v1("?artist") v2("?discog"):::projected c2(["wd:Q273057"]):::iri f0[["not bound(?artist)"]] f0 --> v1 v2 --"wdt:P31"--> c2 subgraph optional0["(optional)"] style optional0 fill:#bbf,stroke-dasharray: 5 5; v1 -."wdt:P358".-> v2 end