@prefix ql: <http://semweb.mmlab.be/ns/ql#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix rml: <http://semweb.mmlab.be/ns/rml#> .
@prefix rr: <http://www.w3.org/ns/r2rml#> .
@prefix d2rq: <http://www.wiwiss.fu-berlin.de/suhl/bizer/D2RQ/0.1#> .
@prefix : <http://mapping.example.com/> .

:map_person_000 rml:logicalSource :source_000 ;
	rdf:type rr:TriplesMap ;
	rdfs:label "person" ;
	rr:subjectMap :s_000 .

:source_000 rdf:type rml:LogicalSource ;
	rml:source :database_000 ;
	rml:query "SELECT DEPTNO, DNAME, LOC,\n(SELECT COUNT(*) FROM EMP WHERE EMP.DEPTNO=DEPT.DEPTNO) AS STAFF\nFROM DEPT;" ;
	rr:sqlVersion rr:SQL2008 ;
	rml:referenceFormulation ql:CSV .

:database_000 rdf:type d2rq:Database ;
	d2rq:jdbcDSN "http://localhost/example" ;
	d2rq:jdbcDriver "com.mysql.cj.jdbc.Driver" ;
	d2rq:username "root" ;
	d2rq:password "root" .

:s_000 rdf:type rr:SubjectMap ;
	rr:termType rr:BlankNode .