Reputation: 53
I have a list of dbpedia URI's and I want to get some informations (categories, label) about each of them in one query:
SELECT ?category ?label where {
{
dbpedia:Financial_Times dcterms:subject ?category .
dbpedia:Financial_Times rdfs:label ?label .
FILTER ( lang(?label) = 'en' )
}
UNION
{
dbpedia:London dcterms:subject ?category .
dbpedia:London rdfs:label ?label .
FILTER ( lang(?label) = 'en' )
}
}
This query works fine, but I'd need to add the URI's themself into the result to be able identify which result row is for which URI.
Upvotes: 0
Views: 491
Reputation: 81
you can do something like
SELECT distinct ?who ?category ?label where {
{
?who dcterms:subject ?category .
?who rdfs:label ?label .
FILTER ( lang(?label) = 'en' ).
FILTER(?who = dbpedia:Financial_Times or ?who = dbpedia:London )
}}
or use a trick like this
SELECT ?who ?category ?label where {
{
dbpedia:Financial_Times dcterms:subject ?category .
dbpedia:Financial_Times rdfs:label ?label .
FILTER ( lang(?label) = 'en' ).
VALUES ?who { dbpedia:Financial_Times}
}
UNION
{
dbpedia:London dcterms:subject ?category .
dbpedia:London rdfs:label ?label .
FILTER ( lang(?label) = 'en' ) .
VALUES ?who { dbpedia:London }
}}
the second one probably is faster but needs SPARQL 1.1
Upvotes: 1