Pagekit\Database\Query\QueryBuilder::aggregate PHP Method

    public function aggregate($function, $column)
    {
        $select = $this->getPart('select');
        $results = $this->setPart('select', sprintf('%s(%s) aggregate', strtoupper($function), $column))->get();
        $this->setPart('select', $select);
        if ($results) {
            return $results[0]['aggregate'];
        }
    }