Read-only SPARQL

Data SPARQL Workbench

Query the published materials graphs directly. Queries are checked for read-only safety and a bounded result size before execution.

Policy: Read-only LIMIT capped at 1,000 Execution unavailable

Query editor

Write or paste a read-only SELECT query. The guard adds or checks the LIMIT before the query is sent.

Public query execution is unavailable in this environment. You can still validate the query; ask the platform administrator to enable the read-only DataGraph Virtuoso proxy to run it.

Query examples

Start with a safe query shape. These examples are read-only and include a LIMIT.

Preview public triples SELECT ?s ?p ?o WHERE { GRAPH ?g { ?s ?p ?o } } LIMIT 100 Use example

List dataset resources PREFIX dcat: <http://www.w3.org/ns/dcat#> SELECT ?dataset ?distribution WHERE { GRAPH ?g { ?dataset a dcat:... Use example

Find labels PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> SELECT ?entity ?label WHERE { GRAPH ?g { ?entity rdfs:... Use example

Text to SPARQL (optional)

Describe the public dataset information you want. Review the resulting draft in the editor before validating or running it.