[an error occurred while processing this directive] RDQL/Squish examples [an error occurred while processing this directive]

Most of these examples are derived from the testbed for Squish set up by Dan Brickley and Libby Miller [1][2]. See also Query and Rule languages Use Cases and Examples and W3C RDF Query (and Rule) Testcase Repository.

Example 1

Find dc::title, dcq::abstract, details of creation and modification date(s), and the creators name and email address. 


SELECT 	?x, ?title, ?a, ?moddate, ?createddate, ?name, ?creatormail
FROM 	<http://rdfweb.org/people/danbri/2001/06/dcarch-test/dc3.rdf>
WHERE
	( ?x, <dc:title>, ?title),
	( ?x, <dcq:abstract>, ?a),
	( ?x, <dcq:modified>, ?m),
	( ?x, <dcq:created>, ?cd),
	( ?m, <rdf:value>, ?moddate),
	( ?cd, <rdf:value>, ?createddate),
	( ?x, <dc:creator>, ?cr),
	( ?cr, <vcard:FN>, ?name),
	( ?cr, <vcard:EMAIL>, ?creatormail)
USING 	dcq for <http://dublincore.org/2000/03/13/dcq#>,
	rdf for <http://www.w3.org/1999/02/22-rdf-syntax-ns#>,
	vcard for <http://www.w3.org/2001/vcard-rdf/3.0#>,
	dc for <http://purl.org/dc/elements/1.1/>

Example 2

Find dc::title, dcq::abstract, details of creation and modification date(s), and the creators name and email address. 

SELECT 	?x, ?title, ?a, ?moddate, ?createddate, ?name, ?creatormail
FROM 	<http://testers.mkdoc.com/dc.rdf>,
	<http://testers.mkdoc.com/features/dc.rdf>,
	<http://testers.mkdoc.com/cma/dc.rdf>
 WHERE
	(?x, <dc:title>, ?title),
	(?x, <dcq:abstract>, ?a),
	(?x, <dcq:modified>, ?m),
	(?x, <dcq:created>, ?cd),
	(?m, <rdf:value>, ?moddate),
	(?cd, <rdf:value>, ?createddate),
	(?x, <dc:creator>, ?cr),
	(?cr, <vcard:FN>, ?name),
	(?cr, <vcard:EMAIL>, ?creatormail)
USING 	dcq for <http://dublincore.org/2000/03/13/dcq#>,
	rdf for <http://www.w3.org/1999/02/22-rdf-syntax-ns#>,
	vcard for <http://www.w3.org/2001/vcard-rdf/3.0#>,
	dc for <http://purl.org/dc/elements/1.1/>

Example 3

Find dc::title, dcq::abstract, for any pairs of pages x and y where x references y; find the last modified date of the referenced page. 

SELECT 	?x, ?y, ?title1, ?title2, ?abstract1, ?abstract2, ?lastmod
FROM	
	<http://rdfweb.org/people/danbri/2001/06/dcarch-test/relations/features_fix.rdf>,
	<http://rdfweb.org/people/danbri/2001/06/dcarch-test/relations/humans_fix.rdf>
WHERE
	(?x, <dc:title>, ?title1),
	(?y, <dc:title>, ?title2),
	(?x, <dcq:abstract>, ?abstract1),
	(?y, <dcq:abstract>, ?abstract2),
	(?x, <dcq:references>, ?y),
	(?y, <dcq:modified>, ?m),
	(?m, <rdf:value>, ?lastmod)
USING 	dcq for <http://dublincore.org/2000/03/13/dcq#>,
	rdf for <http://www.w3.org/1999/02/22-rdf-syntax-ns#>,
	vcard for <http://www.w3.org/2001/vcard-rdf/3.0#>,
	dc for <http://purl.org/dc/elements/1.1/>

Example 4

Find me the title, subject, description, identifier and language of the resource btw: find out also the language which each value is 

SELECT
	?title_value, ?title_language,
	?subject_value,?subject_language,
	?description_value, ?description_language,
	?language,
	?identifier
FROM
	<http://braveheart.eun.org/xml/rdf/example10.xml>
WHERE
	( ?x, <dc:title>, ?tt),
	( ?tt, <rdf:value>, ?title_value),
	( ?tt, <dc:language>, ?ttl),
	( ?ttl, <dcq:RFC1766>, ?title_language),
	( ?x, <dc:subject>, ?ss1),
	( ?ss1, <etbthes:ETBT>, ?ss2),
	( ?ss2, <rdf:value>, ?subject_value),
	( ?ss2, <dc:language>, ?ss3),
	( ?ss3, <dcq:RFC1766>, ?subject_language),
	( ?x, <dc:description>, ?dd),
	( ?dd, <rdf:value>, ?description_value),
	( ?dd, <dc:language>, ?ddl),
	( ?ddl, <dcq:RFC1766>, ?description_language),
	( ?x, <dc:identifier>, ?identifier),
	( ?x, <dc:language>, ?ll1),
	( ?ll1, <dcq:RFC1766>, ?language)
USING
	rdf for <http://www.w3.org/1999/02/22-rdf-syntax-ns#>,
	rdfs for <http://www.w3.org/2000/01/rdf-schema#>,
	dc for <http://purl.org/dc/elements/1.1/>,
	dcq for <http://purl.org/dc/terms/>,
	dct for <http://purl.org/dc/dcmitype/>,
	etb for <http://eun.org/etb/elements/>,
	etbthes for <http://eun.org/etb/thesaurus/elements/>

Example 5

Find me the job with a salary >= 100000

SELECT ?sal, ?t, ?x  
FROM	<http://ilrt.org/discovery/2000/11/rss-query/jobs-rss.rdf>,
	<http://ilrt.org/discovery/2000/11/rss-query/jobs.rss>
WHERE 
   (?x, <job:advertises>, ?y),
   (?y, <job:salary>, ?sal),
   (?y, <job:title>, ?t) 
AND (?sal >= 100000)
USING job for <http://ilrt.org/discovery/2000/11/rss-query/jobvocab.rdf#>

Example 6

Get me all the names and any other information about the rooms used at SWWS 

SELECT  ?name, ?info 
SOURCE <http://www.ilrt.bris.ac.uk/discovery/2001/06/content/swws2001-07-30.rdf>
WHERE  
(?cal, <dc::source>, <http://www.SemanticWeb.org/SWWS/program/>),
(?cal, <ical::VEVENT-PROP>, ?event),
(?event, <ical::LOCATION>, ?geo),
(?geo, <ical::GEO-NAME>, ?text),
(?text, <rdf::value>, ?name),
(?geo, <rdfs::seeAlso>, ?info)  
USING 
rdf FOR <http://www.w3.org/1999/02/22-rdf-syntax-ns#>,
rdfs FOR <http://www.w3.org/2000/01/rdf-schema#>,
ical FOR <http://ilrt.org/discovery/2001/06/schemas/ical-full/hybrid.rdf#>,
util FOR <http://ilrt.org/discovery/2001/06/schemas/swws/index.rdf#>,
foaf FOR <http://xmlns.com/foaf/0.1/>,
dc FOR <http://purl.org/dc/elements/1.1/>

Example 7

Give me the URL of the item having a rss:title starting with the word "RDQL"

SELECT  ?link
SOURCE <http://xmlhack.com/rss10.php>
WHERE  
(?x, <rss::title>, ?title),
(?x, <rss::link>, ?link)
AND ?title LIKE '/^RdQL/i'
USING
rss for <http://purl.org/rss/1.0/>



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