Anton V.
Projects and blogs
Knowledge graphs and Semantic Web
SPARQL
SPARQL Client

SPARQL Client

About the tool

SPARQL (SPARQL Protocol and RDF Query Language) is a query language for RDF, widely used for working with linked data on the web. SPARQL queries are usually executed over HTTP against SPARQL endpoints that provide access to RDF data.

In order to interact with SPARQL endpoints, you can make HTTP requests to the respective URLs programmatically using generic HTTP client libraries, command-line tools such as cURL, or GUI tools such as Postman.

To make it easier to work with SPARQL, I've created this web-based tool designed specifically for this purpose. It allows you to execute SPARQL queries against SPARQL endpoints online, without worrying about the details of the underlying HTTP protocol.

To use this tool, simply enter the URL of the SPARQL endpoint and the SPARQL query, and press the Run query button. The results of the query will be displayed in the table below.

Demo

SPARQL endpoint

The SPARQL endpoint URL.

SPARQL query

SELECT ?item ?itemLabel 
WHERE 
{
  ?item wdt:P31 wd:Q146. # instance of cat
  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
}1
SELECT ?item ?itemLabel 
2
WHERE 
3
{
4
  ?item wdt:P31 wd:Q146. # instance of cat
5
  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
6
}

The SPARQL query.

Query result

Press the Run query button to execute the query.

See also

SPARQL Playground (RDF Playground) - Experiment with running SPARQL queries against RDF data.
Why federation is a game-changing feature of SPARQL - SPARQL federation is an incredibly useful feature for querying distributed RDF graphs.
Introduction to SPARQL - SPARQL is a query language for graph data. The graph model of thinking fits well a lot of use cases.
SPARQL Parse Tree Viewer - Visualize the parse tree of SPARQL queries.
Let's explore the Nobel Prize dataset - An overview of the official Nobel Prize Linked Data dataset with some example SPARQL queries.
SPARQL on FHIR - Query FHIR data using SPARQL.
RDF graphs - Intro to RDF graph visualization + demo.
RDF* and the onset of Linked Data* and the Semantic Web* - The evolution of RDF and the related technologies fuelled by the need to make statements about statements.
OWL reasoning - Using OWL reasoning to infer new knowledge.
OWL Functional Syntax Parse Tree Viewer - View the parse tree of OWL Functional Syntax.
Turtle Editor - Edit Turtle documents online.
Turtle Inspector - Inspect the RDF content of Turtle files.
Turtle Parse Tree Viewer - Visualize the parse tree of Turtle syntax.
How to query Wikidata using SPARQL in JavaScript - A guide to getting data from Wikidata using SPARQL in JavaScript.
SHACL Validator - Validate RDF data against SHACL shapes.
Semantic Web Browser - Look up entities on the Semantic Web.
Data exploration on linked COVID-19 datasets - An overview of the available RDF datasets and discovery tools for COVID-19.
Creating an Amazon Neptune database using AWS CDK v2 - Provisioning a graph database cluster in AWS using TypeScript.
The RDF model of the Gene Ontology, demystified - An outline of the structure of the Gene Ontology RDF graph and ways to query it.

Made by Anton Vasetenkov.

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