FQL is a query language that allows you to retrieve, filter and project data from any data source containing FHIR Resources. It brings the power of three existing languages together: SQL, JSON and FhirPath. It allows you to create tables and is useful for gaining insight and perform quality control.
<ResearchSubject xmlns="http://hl7.org/fhir"> <id value="researchsubject-soa-2" /> <meta> <profile value="http://clinicalsite.org/fhir/StructureDefinition/researchsubject-soa" /> </meta> <contained> <Consent> <id value="consent" /> <status value="active" /> <category> <coding> <system value="http://hl7.org/fhir/consentcategorycodes" /> <code value="RESEARCH" /> </coding> </category> <patient> <reference value="Patient/patient-soa-1" /> </patient> <dateTime value="2017-12-07" /> <policy> <uri value="http://clinicalsite.org/consent-policy-dummy-url.html" /> </policy> </Consent> </contained> <extension url="http://clinicalsite.org/fhir/StructureDefinition/researchsubject-status-history"> <extension url="status"> <valueCode value="potential-candidate" /> </extension> <extension url="period"> <valuePeriod> <start value="2017-12-01" /> </valuePeriod> </extension> </extension> <extension url="http://clinicalsite.org/fhir/StructureDefinition/researchsubject-status-history"> <extension url="status"> <valueCode value="candidate" /> </extension> <extension url="period"> <valuePeriod> <start value="2017-12-07" /> </valuePeriod> </extension> </extension> <extension url="http://clinicalsite.org/fhir/StructureDefinition/researchsubject-status-history"> <extension url="status"> <valueCode value="screening" /> </extension> <extension url="period"> <valuePeriod> <start value="2017-12-17" /> </valuePeriod> </extension> </extension> <identifier> <type> <coding> <system value="http://clinicalsite.org/fhir/CodeSystem/researchsubject-identifier-type" /> <code value="SCREEN" /> </coding> </type> <system value="http://someTrialSponsor.org/NamingSystem/screening-identifier" /> <value value="1973" /> </identifier> <!-- <identifier> <type> <system value="http://clinicalsite.org/fhir/CodeSystem/researchsubject-identifier-type" /> <code value="SUBJ" /> </type> <system value="http://someTrialSponsor.org/NamingSystem/researchsubject-identifier"/> <value value="5467"/> </identifier> --> <status value="enrolled" /> <period> <start value="2017-12-01" /> </period> <study> <reference value="ResearchStudy/researchstudy-soa-1" /> </study> <individual> <reference value="Patient/patient-soa-1" /> </individual> <consent> <extension url="http://clinicalsite.org/fhir/StructureDefinition/consent-annotation"> <valueAnnotation> <text value="This is a comment about the consent" /> </valueAnnotation> </extension> <reference value="#consent" /> </consent> </ResearchSubject>