Wikibase/Indexing/SPARQL Query Examples

Syntax according to RDF Dump format. See also https://phabricator.wikimedia.org/T86786

Further examples can be found at d:Wikidata:SPARQL query service/queries

This page is parsed by the web interface of the query service to fill its drop down of example queries. Keywords in the line below the header are used to be populate the keyword cloud.

Consider adding a comment in the query noting what it illustrates, when and by whom it was written and which are its limitations given the current data and use of properties at Wikidata.

Standard Prefixes
These are standard prefixes, however their use is optional as the query endpoint knows to resolve standard prefixes automatically. PREFIX wd:  PREFIX wdt:  PREFIX wikibase:  PREFIX p:  PREFIX ps:  PREFIX pq:  PREFIX rdfs: 

Simple Queries
These queries help to understand SPARQL and the Wikibase RDF format

Cats

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Showcase Queries
These queries show the power and functionality of query.wikidata.org.

Databases listed in Wikidata and if available applicable licenses
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Biological databases listed in Wikidata and if available applicable licenses
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Find the number of existing translations for diseases in Wikidata
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Museum
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Queries for maintenance
These queries help to maintain the data quality of Wikidata

Find duplicate identifiers
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Even more cats

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US presidents and spouses

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List of presidents with causes of death

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Presidents and their causes of death ranking

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Politicians who died of cancer (of any type)

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People born before year 1880 with no death date

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Largest cities with female mayor

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List of countries ordered by the number of their cities with female mayor

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List of present-day countries and capital(s)

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How many states this US state borders

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Whose birthday is today?

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Who discovered the most asteroids?

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Who discovered the most planets? (with list)

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American universities founded before the states they reside in were created

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What is the relation between Terrell Buckley and Miami Dolphins?

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Properties that are defined as "qualifier only" but are used in references

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Aliases of properties which are used more than once

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WDQ queries: https://www.wikidata.org/wiki/Wikidata:List_of_queries

List of space probes with pictures

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List of parliament buildings with pictures by country

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List of actors with pictures with year of birth and/or death

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French people with an article on the English Wikipedia but not on the French one

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Number of scientists per gender

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Mushers with neither a ranking in a race nor a reason for not finishing it

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Winner of the Academy Awards by Award and Time
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Actresses without a description in Spanish

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Academy award data

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Paintings by Gustav Klimt

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Number of handed out academy awards per award type

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Birthplaces of German Poets

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Authors, writers and poets ranked by sitelink and also includes "country of citizenship".

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Orders "instances of" "books" with an author by "site link"

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Books or literary works published before 1830 with place of publication or narrative location coordinates

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Place of publication unbound

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Birthplace of composers

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Samples with coordinates to illustrate maps

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Map of U1 subway stations in Berlin

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Locations of universities in Germany

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Locations of power stations

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Locations of stone arch bridges

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Locations of aqueducts

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Locations of archaelogical sites

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Locations of castles that are also archaeological sites

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Locations of battles

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Locations of Pablo Picasso works

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All museums (including subclass of museum) in Washington, D.C. with coordinates

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All ski resorts with coordinates

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Lighthouses in Norway

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Mountains, with coordinates, not located on Earth

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Literary Works by Label Count

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All subclasses of "Literary Work"

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Epic Poems by Label Count

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Epic Poems by SiteLink Count

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Instance of Book by Sitelink Count

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Finding John and Sarah Connor

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Gender balance of members of Irish parliament

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Most popular tonality

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List of torture devices

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Biologists with Twitter accounts

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Locations of air accidents

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French heads of government by length of service

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Public sculptures in Paris

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Women who are artists

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Largest cities of the world

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Most popular fathers

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Items with the most birth dates

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Select French municipalities by INSEE code (select by identifier)

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The Simpsons television series episodes list by season

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Popular television series (in treeview)

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Statements from literature (DOI references)
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Increasingly the Digital Object Identifier (DOI) is used to identifier literature, though not the only identifier. These example start with the DOI.

Statements originating from a specific DOI
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Overall causes of death ranking
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WWII battle durations

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Common phrases

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Poets and monarchs

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List of digital libraries in the world

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List of computer files formats

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List of pharmaceutical drugs with picture

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List of theatre plays

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List of popes

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List of W3C standards

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Population in Europe after 1960

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Publishers by occupation

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Data of Douglas Adams

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Fictional subjects of the marvel universe

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Depicted objects in art work

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Most eponymous mathematicians

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Request all organisms that are located in the female urogential tract and that have a gene with product indole
{{SPARQL|query= SELECT ?organism_name WHERE {  	?organism_item wdt:P276 wd:Q5880 ; rdfs:label ?organism_name. ?gene wdt:P703 ?organism_item ; wdt:P1056 wd:Q319541. FILTER (LANG(?organism_name) = "en"). } }}
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Airports within 100km of Berlin
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Schools between San Jose, CA and Sacramento, CA

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Longest rivers

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Popular names per birthplace

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Listeria
Samples suitable for Listeria. Generally only include ?item as output. Listeria will add more information from that item. Additional variables from the query could also be used in the lists.

Women born in Wales without an article in Welsh for Listeria

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People born in Occitania for Listeria

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People born in Scotland for Listeria (1)

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People born in Scotland for Listeria (2)

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Scientific articles that have subject Zika virus or fever and that are used as a reference in another item
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Most common Zika author
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Wikidata scientific articles that contain "zika" in the title
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Get the available PMID-DOI mappings
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Find drugs for cancers that target genes related to cell proliferation
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German states, ordered by the number of company headquarters per million inhabitants
This query shows some not-so-easy nesting of DISTINCT (don't count any company twice) and aggregate, in combination with arithmetic output evaluation functions. It is a hard query that may time out if modified.

Wikidata people per million inhabitants for all EU countries
Interesting maintenance query that shows the relative prominence of a country's current (living) population on Wikidata. The query tends to time out when using all countries at once, but it might be possible to get the figures for each individual country by using, e.g., BIND( wd:Q30 AS ?country ) instead of ?country wdt:P31 wd:Q185441 ..