add cart choropleth column cross cube error file folder geo help home lock obs poi rdf remove search slice spreadsheet success table unlock warning

[this is a icon-] developer tool

SPARQL 1.1 Query: Results

Edit query
Query results
s p_blank o_blank
http://statistics.gov.scot/id/statistical-geography/S02000793 http://www.w3.org/1999/02/22-rdf-syntax-ns#type geosparql: Geometry
http://statistics.gov.scot/id/statistical-geography/S02000793 geosparql: asWKT MULTIPOLYGON (((-3.053041111511534 55.844940541445105, -3.05217612774909 55.84554350378586, -3.053817031272108 55.846912863862606, -3.047479014938829 55.84879103869135, -3.045812703324091 55.84919159760648, -3.040871540497161 55.847184813122475, -3.042085149349195 55.84538643311652, -3.039591071951838 55.84426140040607, -3.040920152652413 55.843626170123166, -3.037943780140419 55.84220465708164, -3.041062388307339 55.84118092241621, -3.040447561537059 55.839685551834016, -3.042457818100522 55.84021664238151, -3.044918711093294 55.83909055231716, -3.046648433136844 55.83928251229691, -3.048538044461055 55.840668155064066, -3.0510165129676 55.84079077112228, -3.052170764466432 55.84194829580029, -3.050903865374579 55.84230041334886, -3.05129361462117 55.84285644635989, -3.052064758214085 55.84314831940082, -3.052930030872518 55.842649245788785, -3.054077546344815 55.84290005802471, -3.052328294070741 55.84436737610446, -3.053041111511534 55.844940541445105)), ((-3.046512984736669 55.83899612979844, -3.043909730786725 55.837787242278026, -3.044345701068857 55.837172826339824, -3.043015605531604 55.83540468955514, -3.044501194289809 55.834834983138755, -3.045834014782957 55.835713222118976, -3.048231889468728 55.83463252821181, -3.051310855966524 55.83631348250657, -3.048565894447835 55.83719339046506, -3.049203540479857 55.8378346357055, -3.048638234605485 55.83892818796576, -3.046512984736669 55.83899612979844)))
SPARQL API: The Basics

The most flexible way to access the data is by using SPARQL, a query language, analagous to SQL for relational databases, for retrieving and manipulating data from graph databases like ours. We support SPARQL 1.1 query syntax. Many online tutorials are available.

To submit a SPARQL query from your code, you issue an HTTP GET or POST to our endpoint:http://statistics.gov.scot/sparql, with the query itself as a url-encoded parameter called query.

For example, to run the following simple SPARQL query and get the results as JSON:

SELECT * WHERE {?s ?p ?o} LIMIT 10

Option 1: POST (recommended)

Issue a POST to the endpoint, with the query in the body, and an Accept header of sparql-results+json:

POST http://statistics.gov.scot/sparql HTTP/1.1
Host: statistics.gov.scot
Accept: application/sparql-results+json
Content-Type: application/x-www-form-urlencoded

query=SELECT+%2A+WHERE+%7B%3Fs+%3Fp+%3Fo%7D+LIMIT+10

Option 2: GET

Issue a GET to the following URL (note the .json extension - see the formats section for more detail on this):

GET http://statistics.gov.scot/sparql.json?query=SELECT+%2A+WHERE+%7B%3Fs+%3Fp+%3Fo%7D+LIMIT+10

Scroll down to the end of this page for examples of both of these methods in a few different languages.

Results formats

As with other aspects of our API, to get the data in different formats, you can use either (a) a format extension or (b) an HTTP Accept header. Available result formats depend on the type of SPARQL query. There are four main forms:

SELECT queries return tabular results, and the formats available reflect this:

Format Extensions Accept Headers
XML .xml application/xml,
application/sparql-results+xml
JSON .json application/json,
application/sparql-results+json
Text .txt, .text text/plain
CSV .csv text/csv

CONSTRUCT and DESCRIBE queries return graph data, so the results are available in the same formats as our resource APIs:

Format Extensions Accept Headers
RDF/XML .rdf application/rdf+xml
N-triples .nt, .txt, .text application/n-triples,
text/plain
Turtle .ttl text/turtle
JSON-LD .json application/ld+json,
application/json

ASK queries return a boolean result:

Format Extensions Accept Headers
XML .xml application/xml,
application/sparql-results+xml
JSON .json application/json,
application/sparql-results+json
Text .txt, .text text/plain
Results pagination

We accept page and per_page parameters for paginating the results of SELECT queries (we automatically modify your query to apply LIMIT and OFFSET clauses). For other query types (i.e. DESCRIBE, CONSTRUCT, ASK), pagination like this doesn’t make so much sense, so these parameters are ignored.

For requests made through the website (i.e. HTML format), the page size is defaulted to 20. For requests to our sparql endpoint for data formats (i.e. non-HTML), there will be no defaults for these parameters (i.e. results are unlimited. For performance reasons we generally advise LIMITing your query if possible).

Parameter Substitution

You can parameterise your SPARQL by including %{tokens} in your queries, and providing values for the tokens in the request parameters.

Note that the following tokens are reserved and cannot be used as parameters for substitution:

  • controller
  • action
  • page
  • per_page
  • id
  • commit
  • utf8
  • query
Cross Origin Resource Sharing

Our servers are configured to allow access from all domains. This means that if you’re writing JavaScript to request data from our server in to a web page hosted on another domain, your browser should check this header and allow it.

If you need to support very old browsers, you can additionally pass a callback parameter and the results will be wrapped in that function. For example:

http://statistics.gov.scot/sparql.json?callback=myCallbackFunction&query=SELECT+%2A+WHERE+%7B%3Fs+%3Fp+%3Fo%7D+LIMIT+10

This help topic on the jQuery website has more details.

Examples

Using cURL

Here’s a couple of examples running a query using the widely available cURL command line program.

Request the results as XML, using a POST:

curl -X POST -H "Accept: application/sparql-results+xml" -d "query=SELECT%20*%20WHERE%20%7B%3Fs%20%3Fp%20%3Fo%7D%20LIMIT%2010" http://statistics.gov.scot/sparql

Request the results as JSON, using a GET:

curl -X GET -H "Accept: application/sparql-results+json" http://statistics.gov.scot/sparql?query=SELECT%20*%20WHERE%20%7B%3Fs%20%3Fp%20%3Fo%7D%20LIMIT%2010

Using JavaScript

This example HTML page uses jQuery to issue a POST to our SPARQL endpoint, requesting the results as JSON.

<!DOCTYPE html>
<html>
<head>
	<script src='http://code.jquery.com/jquery-1.9.1.min.js'></script>
</head>
<body>
<script type='text/javascript'>

	var query = 'SELECT * WHERE {?s ?p ?o} LIMIT 10';
	var url = 'http://statistics.gov.scot/sparql.json';
	$.ajax({
		method: 'POST',
		dataType: 'json',
		url: url,
		data: {query: query},
		success: function(data) {
			alert('success: ' + data.results.bindings.length + ' results');
			console.log(data);
		}
	});
</script>
</body>
</html>