text: -- The initialize data for test purpose
  
  -- Do some clean
  DELETE FROM `comment`;
  DELETE FROM `article`;
  DELETE FROM `author`;
  
  -- Article
  
  INSERT INTO `article` (`id`, `name`, `unique_key`, `url`, `deleted`)
  VALUES (888888, 'Test Article 1', '12345678', 'http://www.baidu.com', 0);
  
  INSERT INTO `article` (`id`, `name`, `unique_key`, `url`, `deleted`)
  VALUES (999999, 'Test Article 2', '12345679', 'http://www.example.com', 0);
  
  INSERT INTO `article` (`id`, `name`, `unique_key`, `url`, `deleted`)
  VALUES (777777, 'Test Article 3', 'a-unique-key', 'http://www.example.com/ssssss', 0);
  
  -- Author
  INSERT INTO `author` (`id`, `name`, `email`, `homepage`, `author_type`, `create_time`, `deleted`)
  VALUES (888888, 'Test Author', 'example@example.com', 'http://www.example.com', NULL, NULL, NULL);
  
  -- Comment
  INSERT INTO `comment` (`id`, `author_id`, `article_id`, `message`, `parent_id`, `status`, `create_time`, `last_update_time`, `deleted`)
  VALUES (111111, 888888, 888888, 'Test message', NULL, NULL, NULL, NULL, 0);
  
  INSERT INTO `comment` (`id`, `author_id`, `article_id`, `message`, `parent_id`, `status`, `create_time`, `last_update_time`, `deleted`)
  VALUES (111112, 888888, 888888, 'Test message', 111111, NULL, NULL, NULL, 0);
  
  INSERT INTO `comment` (`id`, `author_id`, `article_id`, `message`, `parent_id`, `status`, `create_time`, `last_update_time`, `deleted`)
  VALUES (111113, 888888, 888888, 'Test message', 111112, NULL, NULL, NULL, 0);
  