public function findOne($arg = null, $operator = '=', $fields = array('*'))
    {
        return $this->find($arg, $operator, $fields)->limit(0, 1);
    }
public function findOne($arg = null, $operator = '=', $fields = array('*'))
    {
        return $this->find($arg, $operator, $fields)->limit(0, 1);
    }
public function findOne ( $ arg = null , $ operator = '=' , $ fields = array ( '*' ) ) { return $ this -> find ( $ arg , $ operator , $ fields ) -> limit ( 0 , 1 ) ; }
Find first random value returned by the query
@param string $arg
@param string $operator
@param array $fields
@return \Phiber\oosql\oosql
Find first random value returned by the query