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migrations/reports.sql

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+CREATE OR REPLACE FUNCTION get_results() 
+RETURNS TABLE ("Пациент" text, "Обследование" text, "Результат" varchar) 
+AS $$
+BEGIN
+    RETURN QUERY(SELECT pa.policy_number, et.name, COALESCE(qr.value::varchar, CONCAT(nr.value || ' ' || u.name))
+				FROM patient pa
+				LEFT JOIN prescription pr 
+					ON pa.patient_id = pr.patient_id
+				LEFT JOIN examination_type_prescription etp 
+					ON pr.prescription_id = etp.prescription_id
+				LEFT JOIN examination_type et
+					ON et.examination_type_id = etp.examination_type_id
+				LEFT JOIN result r
+					ON etp.result_id = r.result_id
+				LEFT JOIN qualitative_result qr
+					ON r.result_id = qr.result_id
+				LEFT JOIN numeric_result nr
+					ON r.result_id = nr.result_id
+				LEFT JOIN unit u
+					ON nr.unit_id = u.unit_id
+				WHERE et.name IS NOT NULL);
+END;
+$$ LANGUAGE plpgsql;