query-bf92a760fc91147eaa5fc6643b228f96

rq turtle/ttl

Podstawy SPARQL A simple SPARQL query looks like this: } .?c f ?b .?b n m .?a y x { WHERE ?c ?b ?a SELECT clause contains restrictions on them, mostly in the form of triples. All information in Wikidata (and similar knowledge databases) is stored in the form of triples; when you run the query, the query service tries to fill in the variables with actual values so that the resulting triples appear in the knowledge database, and returns one result for each combination of variables it finds. WHERE clause lists variables that you want returned (variables start with a question mark), and the SELECTThe : object, and an predicate, a subjectA triple can be viewed as two vertices (alias 2 nodes, 2 resources) connected by an edge (an arc, a property) inside the vast directed (oriented) property multigraph which forms Wikidata. It can be read like a sentence (which is why it ends with a period), with a } .sour tastes ?fruit .yellow hasColor ?fruit { WHERE ?owoc SELECT The results for this query could include, for example, “lemon”. In Wikidata, most properties are “has”-kind properties, so the query might instead read:

Use at

SELECT ?owoc
WHERE
{
  ?fruit color yellow.
  ?fruit taste sour.
}

Query found at