I can get item and its properties by label:
SELECT distinct ?item ?itemLabel ?itemDescription
(SAMPLE(?DR) as ?DR) (SAMPLE(?article)as ?article)
WHERE {
?item wdt:P31 wd:Q5.
?item ?label "Einstein"#en
OPTIONAL{?item wdt:P569 ?DR .}
?article schema:about ?item .
?article schema:inLanguage "en" .
?article schema:isPartOf <https://en.wikipedia.org/>.
OPTIONAL{?item wdt:P570 ?RIP .}
OPTIONAL{?item wdt:P18 ?image .}
SERVICE wikibase:label { bd:serviceParam wikibase:language "en". }
}
GROUP BY ?item ?itemLabel ?itemDescription
See on Wikidata Query Services.
How can I do the same using QID instead label?
Using the URI instead of the variable ?item will get the information based on the entity Albert Einstein:
PREFIX schema: <http://schema.org/>
PREFIX bd: <http://www.bigdata.com/rdf#>
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX wikibase: <http://wikiba.se/ontology#>
SELECT DISTINCT ?item ?itemLabel ?itemDescription (SAMPLE(?DR) AS ?DRSample) (SAMPLE(?article) AS ?articleSample)
WHERE
{ ?article schema:about ?item ;
schema:inLanguage "en" ;
schema:isPartOf <https://en.wikipedia.org/>
FILTER ( ?item = <http://www.wikidata.org/entity/Q937> )
OPTIONAL
{ ?item wdt:P569 ?DR }
OPTIONAL
{ ?item wdt:P570 ?RIP }
OPTIONAL
{ ?item wdt:P18 ?image }
SERVICE wikibase:label
{ bd:serviceParam
wikibase:language "en"
}
}
GROUP BY ?item ?itemLabel ?itemDescription
You can utilize the already known QID by using BIND:
BIND(wd:Q937 AS ?item).
...
If you already have the QID of the entity you are looking for and simply look for its properties and labels, you're better off using the Wikidata API wbgetentities module
In A. Einstein (Q937) case, that would give the following API call:
https://www.wikidata.org/w/api.php?action=wbgetentities&ids=Q937&format=json
Related
Im trying to perform searchs on wikidata, but my query its a little weird. Some searchs are case-sensitive
EG: using "maradona" match perfectly but "cristiano ronaldo" don't. "Cristiano Ronaldo" match OK.
wikidata
SELECT DISTINCT ?item ?itemLabel (SAMPLE(?RIP) AS ?RIP) (SAMPLE(?image) AS ?image) WHERE {
?item wdt:P31 wd:Q5;
?label "cristiano ronaldo"#en.
?article schema:about ?item;
schema:inLanguage "en".
OPTIONAL { ?item wdt:P570 ?RIP. }
OPTIONAL { ?item wdt:P18 ?image. }
SERVICE wikibase:label { bd:serviceParam wikibase:language "en". }
}
GROUP BY ?item ?itemLabel
I expect to be able to search all with lowercase (or other way to handle it better)
When I run the following query I get multiple rows of "Paul Gauguin" since there are multiple informations about his place/time of death, the same could of course happen on all other parameters as well.
SELECT DISTINCT ?item ?itemLabel ?itemDescription ?birthplaceLabel ?birthdate ?deathplaceLabel ?deathdate ?imageLabel ?article ?articleEn
{
?item wdt:P31 wd:Q5.
?item wdt:P119 wd:Q5024152.
OPTIONAL {
?item wdt:P18 ?image.
}
OPTIONAL {
?item wdt:P19 ?birthplace.
}
OPTIONAL {
?item wdt:P569 ?birthdate.
}
OPTIONAL {
?item wdt:P20 ?deathplace.
}
OPTIONAL {
?item wdt:P570 ?deathdate.
}
OPTIONAL {
?article schema:about ?item.
?article schema:isPartOf <https://sv.wikipedia.org/>.
}
OPTIONAL {
?articleEn schema:about ?item.
?articleEn schema:isPartOf <https://en.wikipedia.org/>.
}
SERVICE wikibase:label { bd:serviceParam wikibase:language "sv,en, [AUTO_LANGUAGE]". }
}
Is there a way of only recive one of the same object id, and don't care about if there are other "versions" of the object.
I have tried a bit with nested queries but I can't get it to work. Are there som other ways?
This query will work:
SELECT DISTINCT ?item ?itemLabel ?itemDescription
(SAMPLE(?birthplaceLabel) AS ?birthplaceLabel)
(SAMPLE(?birthdate) AS ?birthdate)
(SAMPLE(?deathplaceLabel) AS ?deathplaceLabel)
(SAMPLE(?deathdate) AS ?deathdate)
(SAMPLE(STR(?image)) AS ?image)
?article ?articleEn
WHERE {
?item wdt:P31 wd:Q5.
?item wdt:P119 wd:Q5024152.
OPTIONAL {
?item wdt:P18 ?image.
}
OPTIONAL {
?item wdt:P19 ?birthplace.
}
OPTIONAL {
?item wdt:P569 ?birthdate.
}
OPTIONAL {
?item wdt:P20 ?deathplace .
}
OPTIONAL {
?item wdt:P570 ?deathdate.
}
OPTIONAL {
?article schema:about ?item.
?article schema:isPartOf <https://sv.wikipedia.org/>.
}
OPTIONAL {
?articleEn schema:about ?item.
?articleEn schema:isPartOf <https://en.wikipedia.org/>.
}
SERVICE wikibase:label { ?birthplace rdfs:label ?birthplaceLabel .
?deathplace rdfs:label ?deathplaceLabel .
?item rdfs:label ?itemLabel ;
schema:description ?itemDescription .
bd:serviceParam wikibase:language "sv,en, [AUTO_LANGUAGE]". }
}
GROUP BY ?item ?itemLabel ?itemDescription ?article ?articleEn
As you can see, we use the SAMPLE function and group by all the variables that aren't sampled.
You could also replace SAMPLE with GROUP_CONCAT if you wish to see all the possible values taken by a property.
E.g. ... (GROUP_CONCAT(?deathdate; SEPARATOR="; ") AS ?deathdates) ...
Note that GROUP_CONCAT takes strings as arguments.
Found the solution with a bit of modyfing of Valerio Cocchis answer.
SELECT ?item ?itemLabel ?itemDescription
(SAMPLE(?birthplaceLabel) AS ?birthplaceLabel)
(SAMPLE(?birthdate) AS ?birthdate)
(SAMPLE(?deathplaceLabel) AS ?deathplaceLabel)
(SAMPLE(?deathdate) AS ?deathdate)
(SAMPLE(?imageLabel) AS ?imageLabel)
?article ?articleEn
WHERE {
?item wdt:P31 wd:Q5.
?item wdt:P119 wd:Q5024152.
OPTIONAL {
?item wdt:P18 ?image.
}
OPTIONAL {
?item wdt:P19 ?birthplace.
}
OPTIONAL {
?item wdt:P569 ?birthdate.
}
OPTIONAL {
?item wdt:P20 ?deathplace.
}
OPTIONAL {
?item wdt:P570 ?deathdate.
}
OPTIONAL {
?article schema:about ?item.
?article schema:isPartOf <https://sv.wikipedia.org/>.
}
OPTIONAL {
?articleEn schema:about ?item.
?articleEn schema:isPartOf <https://en.wikipedia.org/>.
}
SERVICE wikibase:label {
bd:serviceParam wikibase:language "sv,en, [AUTO_LANGUAGE]".
?birthplace rdfs:label ?birthplaceLabel .
?deathplace rdfs:label ?deathplaceLabel .
?image rdfs:label ?imageLabel .
?item rdfs:label ?itemLabel .
?item schema:description ?itemDescription .
}
}
GROUP BY ?item ?itemLabel ?itemDescription ?article ?articleEn
SELECT DISTINCT ?item ?itemLabel ?itemDescription (MAX(?billion) as ?billions) ?locationLabel (SAMPLE(?image) AS ?picture) ?page_titleEN
WHERE
{
?item wdt:P2218 ?worth.
OPTIONAL {?item wdt:P19 ?location .}
FILTER(?worth>1000000000).
BIND(?worth/1000000000 AS ?billion).
OPTIONAL {
?article schema:about ?item;
schema:isPartOf <https://en.wikipedia.org/>;
schema:name ?page_titleEN.
?item rdfs:label ?LabelEN.
FILTER((LANG(?LabelEN)) = "en")
}
OPTIONAL { ?item wdt:P18 ?image. }
SERVICE wikibase:label { bd:serviceParam wikibase:language "en". }
}
GROUP BY ?item ?itemLabel ?itemDescription ?billions ?locationLabel ?picture ?page_titleEN
ORDER BY DESC(?billions)
SELECT ?item ?itemLabel ?itemDescription ?countryLabel ?picture {
?item wdt:P31 wd:Q209287
OPTIONAL { ?item wdt:P17 ?country }
OPTIONAL { ?item wdt:P18 ?picture }
SERVICE wikibase:label { bd:serviceParam wikibase:language "en" }
}
I am trying to run a simple query, looking up an item by its English label. For some reason, some entries are not showing. Most are fine, but some aren't. I can't pinpoint why.
An example: oyster bed. Here is the entry: https://www.wikidata.org/wiki/Q65953972
This is the query:
SELECT distinct ?item ?itemLabel ?itemDescription WHERE {
?item ?label 'oyster bed'#en.
?article schema:about ?item .
?article schema:inLanguage 'en' .
SERVICE wikibase:label { bd:serviceParam wikibase:language 'en'. }
}
and I get nothing.
The same query with oyster yields an expected result.
What am I doing wrong?
Hat tip of #UninformedUser helped.
As a SPARQL newbie, I did not realise the ?article was an implicit JOIN.
SELECT distinct ?item ?itemLabel ?itemDescription WHERE {
?item ?label 'oyster bed'#en.
OPTIONAL { ?article schema:about ?item .
?article schema:inLanguage 'en' . }
SERVICE wikibase:label { bd:serviceParam wikibase:language 'en'. }
}
is to be used if the article is required, but if there is no real need, the query can be simplified to:
SELECT distinct ?item ?itemLabel ?itemDescription WHERE {
?item ?label 'oyster bed'#en.
SERVICE wikibase:label { bd:serviceParam wikibase:language 'en'. }
}