original_string: public function exists()
      {
          $query = $this->db->query('SELECT * FROM ' . $this->table . ' WHERE name = ?', $this->name);
  
          return $query->rowCount() > 0;
      }
code: public function exists()
      {
          $query = $this->db->query('SELECT * FROM ' . $this->table . ' WHERE name = ?', $this->name);
  
          return $query->rowCount() > 0;
      }
code_tokens: public function exists ( ) { $ query = $ this -> db -> query ( 'SELECT * FROM ' . $ this -> table . ' WHERE name = ?' , $ this -> name ) ; return $ query -> rowCount ( ) > 0 ; }
docstring: Returns true if the sequence exist.
  
  @return bool
docstring_tokens: Returns true if the sequence exist .