A set of SPARQL examples that are used in different SIB resources
Give me the set of approved reactions missing citations
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX rh: <http://rdf.rhea-db.org/>
SELECT
?reaction
WHERE
{
?reaction rdfs:subClassOf rh:Reaction .
?reaction rh:status rh:Approved .
OPTIONAL {?reaction rh:citation ?citation .}
FILTER (NOT EXISTS {?reaction rh:citation ?citation .} )
}
ORDER BY ?reaction
graph TD
classDef projected fill:lightgreen;
classDef literal fill:orange;
classDef iri fill:yellow;
v2("?citation")
v1("?reaction"):::projected
c5(["rh:Approved"]):::iri
c3(["rh:Reaction"]):::iri
f0[["not "]]
subgraph f0e0["Exists Clause"]
e0v1 --"rh:citation"--> e0v2
e0v2("?citation"):::projected
e0v1("?reaction"):::projected
end
f0--EXISTS--> f0e0
f0 --> v1
f0 --> c1
f0 --> v2
v1 --"rh:citation"--> v2
v1 --"rdfs:subClassOf"--> c3
v1 --"rh:status"--> c5
subgraph optional0["(optional)"]
style optional0 fill:#bbf,stroke-dasharray: 5 5;
v1 -."rh:citation".-> v2
end