如何在查询生成器phalcon中对值列求和

use Phalcon\Mvc\Model\Query\Builder as QueryBuilder;

// 创建查询生成器实例
$builder = new QueryBuilder();

// 设置要查询的表名
$builder->from('your_table');

// 添加要查询的列和求和操作
$builder->columnsSum('column_name', 'sum_alias');

// 执行查询
$result = $builder->getQuery()->execute();

// 获取求和结果
$sum = $result[0]->sum_alias;

// 输出求和结果
echo "Sum: " . $sum;