text: --
  --    Copyright 2010-2020 the original author or authors.
  --
  --    Licensed under the Apache License, Version 2.0 (the "License");
  --    you may not use this file except in compliance with the License.
  --    You may obtain a copy of the License at
  --
  --       http://www.apache.org/licenses/LICENSE-2.0
  --
  --    Unless required by applicable law or agreed to in writing, software
  --    distributed under the License is distributed on an "AS IS" BASIS,
  --    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  --    See the License for the specific language governing permissions and
  --    limitations under the License.
  --
  
  create table person (
    id int,
    firstName varchar(100),
    lastName varchar(100),
    parent_id int default null,
    parent_firstName varchar(100) default null,
    parent_lastName varchar(100) default null
  );
  
  INSERT INTO person (id, firstName, lastName)
  VALUES (1, 'John', 'Smith');
  
  INSERT INTO person (id, firstName, lastName, parent_id, parent_firstName, parent_lastName)
  VALUES (2, 'Christian', 'Poitras', 1, 'John', 'Smith');
  
  INSERT INTO person (id, firstName, lastName, parent_id, parent_firstName, parent_lastName)
  VALUES (3, 'Clinton', 'Begin', 1, 'John', 'Smith');
  