Doctrine\MongoDB\Aggregation\Stage\Project::sum PHP 메소드

Project 1 문서 파일 보기 프로젝트 열기: doctrine/mongodb

sum() 공개 메소드

Calculates and returns the sum of all the numeric values that result from applying a specified expression to each document in a group of documents that share the same group by key. Ignores nun-numeric values.

또한 보기: http://docs.mongodb.org/manual/reference/operator/aggregation/sum/

또한 보기: Expr::sum

부터: 1.3

public sum ( mixed \| Expr $expression1 ) : Operator
$expression1	mixed \| Doctrine\MongoDB\Aggregation\Expr
리턴	Operator

    public function sum($expression1)
    {
        $this->expr->sum(func_num_args() === 1 ? $expression1 : func_get_args());
        return $this;
    }

Project

avg

excludeIdField

getExpression

includeFields

max

min

stdDevPop

stdDevSamp

sum