INSERT trigger function 

CREATE OR REPLACE FUNCTION fi_person()
    RETURNS trigger
    LANGUAGE plpgsql
AS $function$
BEGIN
    -- Insert current data into history
    INSERT INTO person_hst (
        effective_until,
        effective_from,
        address,
        audit_id,
        date_of_birth,
        person_id,
        name
    ) SELECT
        'infinity' AS effective_until,
        audit.timestamp,
        NEW.address,
        NEW.audit_id,
        NEW.date_of_birth,
        NEW.person_id,
        NEW.name
    FROM  audit
    WHERE audit_id = NEW.audit_id;

    RETURN NEW;
END;
$function$
;