match (p:patient_info)-->(v:visits)
match (v)-[:medical_record_home_page]->(medical_record_home_page)
where medical_record_home_page.ADMISSION_DATE contains '2020'
optional match (v)-[:drug_order]->(drug_order)
where drug_order.APPROVED_DRUG_NAME is not null and drug_order.ORDER_EXECUTE_TIME is not null
optional match (v)-[:operation_record]->(operation_record)
where operation_record.OPERATION_END_TIME is not null