Google Cloud Datastore v1 API - Class AggregationQuery.Types.Aggregation (4.4.0) 

public sealed class Aggregation : IMessage<AggregationQuery.Types.Aggregation>, IEquatable<AggregationQuery.Types.Aggregation>, IDeepCloneable<AggregationQuery.Types.Aggregation>, IBufferMessage, IMessage

Reference documentation and code samples for the Google Cloud Datastore v1 API class AggregationQuery.Types.Aggregation.

Defines a aggregation that produces a single result.

Inheritance

Object > AggregationQuery.Types.Aggregation

Namespace

Google.Cloud.Datastore.V1

Assembly

Google.Cloud.Datastore.V1.dll

Constructors

Aggregation()

public Aggregation()

Aggregation(AggregationQuery.Types.Aggregation)

public Aggregation(AggregationQuery.Types.Aggregation other)
Parameter
NameDescription
otherAggregationQuery.Types.Aggregation

Properties

Alias

public string Alias { get; set; }

Optional. Optional name of the property to store the result of the aggregation.

If not provided, Datastore will pick a default name following the format property_<incremental_id++>. For example:

AGGREGATE
COUNT_UP_TO(1) AS count_up_to_1,
COUNT_UP_TO(2),
COUNT_UP_TO(3) AS count_up_to_3,
COUNT_UP_TO(4)
OVER (
...
);

becomes:

AGGREGATE
COUNT_UP_TO(1) AS count_up_to_1,
COUNT_UP_TO(2) AS property_1,
COUNT_UP_TO(3) AS count_up_to_3,
COUNT_UP_TO(4) AS property_2
OVER (
...
);

Requires:

  • Must be unique across all aggregation aliases.
  • Conform to [entity property name][google.datastore.v1.Entity.properties] limitations.
Property Value
TypeDescription
String

Count

public AggregationQuery.Types.Aggregation.Types.Count Count { get; set; }

Count aggregator.

Property Value
TypeDescription
AggregationQuery.Types.Aggregation.Types.Count

OperatorCase

public AggregationQuery.Types.Aggregation.OperatorOneofCase OperatorCase { get; }
Property Value
TypeDescription
AggregationQuery.Types.Aggregation.OperatorOneofCase