SPARQL - Query language

SPARQL, aka SPARQL Protocol and RDF Query Language, is a query language created in 2008.

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SPARQL (pronounced "sparkle", a recursive acronym for SPARQL Protocol and RDF Query Language) is an RDF query language, that is, a semantic query language for databases, able to retrieve and manipulate data stored in Resource Description Framework (RDF) format. It was made a standard by the RDF Data Access Working Group (DAWG) of the World Wide Web Consortium, and is recognized as one of the key technologies of the semantic web. On 15 January 2008, SPARQL 1.0 became an official W3C Recommendation, and SPARQL 1.1 in March, 2013. Read more on Wikipedia...

Tags: queryLanguage
There are at least 0 SPARQL repos on GitHub
Early development of SPARQL happened in W3C
ANTLR grammar for SPARQL
SPARQL LSP implementation
CodeMirror package for syntax highlighting SPARQL
Monaco package for syntax highlighting SPARQL
Pygments supports syntax highlighting for SPARQL
GitHub supports syntax highlighting for SPARQL
There is 1 Jupyter Kernel for SPARQL
See also: (5 related languages) RDF, SQL, XQuery, Turtle, Geography Markup Language
Read more about SPARQL on the web: 1.

Example from hello-world:

SELECT ?h WHERE {
  VALUES ?h { "Hello World" }
}

Example from Linguist:

PREFIX foaf: <http://xmlns.com/foaf/0.1/>
SELECT ?name ?email
WHERE {
  ?person a foaf:Person.
  ?person foaf:name ?name.
  ?person foaf:mbox ?email.
}

Example from Wikipedia:

PREFIX ex: <http://example.com/exampleOntology#>
SELECT ?capital
       ?country
WHERE
  {
    ?x  ex:cityname       ?capital   ;
        ex:isCapitalOf    ?y         .
    ?y  ex:countryname    ?country   ;
        ex:isInContinent  ex:Africa  .
  }

SPARQL Keywords

add as asc ask base by clear construct copy create data delete desc describe distinct drop false filter from graph group having in insert limit load minus move named not offset optional order prefix reduced select service silent to true undef union using values where with

Language features

Feature	Supported	Example	Token
Integers	✓	# [+\-]?\d+
Floats	✓	# [+\-]?(\d+\.\d*[eE][+-]?\d+\|\.?\d+[eE][+-]?\d+)
Booleans	✓		true false
Strings	✓	"Hello world"	"
Comments	✓	# A comment
Line Comments	✓	# A comment	#