User:Reosarevok/Wikidata Example Queries

These are example queries for the Wikidata SPARQL endpoint

All composers who don't have a MusicBrainz ID stored

For "musicians" instead of "composers", change Q36834 to Q639669.

SELECT ?entityLabel ?entity {
	?entity wdt:P106 wd:Q36834 .
  	MINUS { ?entity wdt:P434 [] } .
	SERVICE wikibase:label { bd:serviceParam wikibase:language "en" }
}

Female composers who don't have a MusicBrainz ID stored

For "musicians" instead of "composers", change Q36834 to Q639669.

SELECT ?entityLabel ?entity {
	?entity wdt:P106 wd:Q36834 .
	?entity wdt:P21 wd:Q6581072 .
  	MINUS { ?entity wdt:P434 [] } .
	SERVICE wikibase:label { bd:serviceParam wikibase:language "en" }
}

Composers born somewhere in Germany who don't have a MusicBrainz ID stored

SELECT ?entityLabel ?entity {
	?entity wdt:P106 wd:Q36834 .
  	?entity wdt:P19 ?place .
    ?place wdt:P17 wd:Q183 .
  	MINUS { ?entity wdt:P434 [] } .
	SERVICE wikibase:label { bd:serviceParam wikibase:language "en" }
}
 

People who have composed at least one work that is in Wikidata and have no MBIDs, sorted by number of works

SELECT ?composer ?composerLabel ?count
WHERE
{
  {
    SELECT ?composer (COUNT(?composition) AS ?count)
        WHERE
        {
			?composition wdt:P86 ?composer;
			MINUS { ?composer wdt:P434 [] } .     
        }
        GROUP BY ?composer
  }
  SERVICE wikibase:label { bd:serviceParam wikibase:language "en". }
}
ORDER BY DESC(?count)