/** * @inherit */ public function max($selector = '.') { if (is_string($selector) && $selector !== '.' && $this->data === null && is_string($this->sql) === false) { if ($this->sql->limit === false && $this->sql->offset === false && is_array($this->sql->groupBy) && count($this->sql->groupBy) === 0) { $db = Connection::instance($this->dbLink); $sql = $this->sql->select('MAX(' . $db->quoteIdentifier($selector) . ')'); return $db->fetchValue($sql); } } return parent::max($selector); }