Loading [Contrib]/a11y/accessibility-menu.js
Back
Close

An introduction to RDF querying in SPARQL

Zwifi
6,656 views
01 Welcome
02 Initial queries
03 Filters
04 Optionality
05 Negation
06 Alternatives
07 Projection
08 Grouping
09 Modifiers
Previous: Negation Next: Projection

Alternative

UNION

Conjunction of patterns
PREFIX yaco: <https://www.irit.fr/recherches/MELODI/ontologies/cinema#>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
SELECT ?person
WHERE {
?person rdf:type yaco:Actor.
?person rdf:type yaco:Director.
}
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Disjunction of patterns
PREFIX yaco: <https://www.irit.fr/recherches/MELODI/ontologies/cinema#>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-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.}
}
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Create your playground on Tech.io
This playground was created on Tech.io, our hands-on, knowledge-sharing platform for developers.
Go to tech.io
Suggested playgrounds

Common patterns with Solid

By
Zwifi
2,328
2

Learning algorithmics with Ada

By
Zwifi
8,873
0

Recueil d'exercices pour apprendre Python au lycée

By
M_C
354.5K
187

Ceaser Cipher

By
Adriaan
5,672
31
codingame x discord
Join the CodinGame community on Discord to chat about puzzle contributions, challenges, streams, blog articles - all that good stuff!
JOIN US ON DISCORD
Online Participants