code: public function select(string $sql, array $parameters = []): ?PDOStatement
      {
          $statement = $this->prepareBind($sql, $parameters);
  
          if ($statement === null) {
              return null;
          }
  
          $startTime = \microtime(true);
  
          $this->executeStatement($statement);
  
          $endTime = \microtime(true);
  
          $this->addQuery($statement, $parameters, $this->getTime($startTime, $endTime));
  
          return $statement;
      }
docs: @param string $sql
  @param array  $parameters
  
  @throws DatabaseException
  
  @return PDOStatement|null