Cloud Firestore Client - Class Aggregate (1.44.1)

Reference documentation and code samples for the Cloud Firestore Client class Aggregate.

Represents Aggregate properties.

Example:

$count = Aggregate::count();
$count->alias('count');

echo json_encode($count->getProps());

Namespace

Google \ Cloud \ Firestore

Methods

alias

Set the aggregate alias.

Example:

$count = Aggregate->count();
$count->alias('total');

echo $count->props()['alias'];
Parameter
Name Description
alias string

The alias for aggregate.

Returns
Type Description
Google\Cloud\Firestore\Aggregate

getProps

Get the array representation for the aggregate.

Returns
Type Description
array

static::count

Creates count aggregation properties.

Example:

$count = Aggregate::count();
Returns
Type Description
Google\Cloud\Firestore\Aggregate

static::sum

Creates sum aggregation properties.

Example:

$sum = Aggregate::sum('field_to_aggregate_upon');

Result of SUM aggregation can be a integer or a float. Sum of integers which exceed maxinum integer value returns a float. Sum of numbers exceeding max float value returns INF. Sum of data which contains NaN returns NaN. Non numeric values are ignored.

Parameter
Name Description
field string

The relative path of the field to aggregate upon.

Returns
Type Description
Google\Cloud\Firestore\Aggregate

static::avg

Creates average aggregation properties.

Example:

$avg = Aggregate::avg('field_to_aggregate_upon');

Result of AVG aggregation can be a float or a null. Average of empty valid data set return null. Average of numbers exceeding max float value returns INF. Average of data which contains NaN returns NaN. Non numeric values are ignored.

Parameter
Name Description
field string|null

The relative path of the field to aggregate upon.

Returns
Type Description
Google\Cloud\Firestore\Aggregate