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An introduction to RDF querying in SPARQL
Zwifi
8,520 views
01
Welcome
02
Initial queries
03
Filters
04
Optionality
05
Negation
06
Alternatives
07
Projection
08
Grouping
09
Modifiers
6/9
Alternatives
Previous:
Negation
Next:
Projection
Alternative
UNION
Conjunction of patterns
union_off.sparql
matrix.ttl
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PREFIX yaco: <https://www.irit.fr/recherches/MELOD
I/ontologies/cinema#>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-synt
ax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema
#>
SELECT ?person
WHERE {
?person rdf:type yaco:Actor.
?person rdf:type yaco:Director.
}
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@prefix yaco: <https://www.irit.fr/recherches/MELO
DI/ontologies/cinema#> .
Run
Disjunction of patterns
union_on.sparql
matrix.ttl
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PREFIX yaco: <https://www.irit.fr/recherches/MELOD
I/ontologies/cinema#>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-synt
ax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema
#>
SELECT ?person
WHERE {
{?person rdf:type yaco:Actor.}
UNION
{?person rdf:type yaco:Director.}
}
1
@prefix yaco: <https://www.irit.fr/recherches/MELO
DI/ontologies/cinema#> .
Run
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