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

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

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

Count of entities that match the query.

The COUNT(*) aggregation function operates on the entire entity so it does not require a field reference.

Inheritance

Object > AggregationQuery.Types.Aggregation.Types.Count

Namespace

Google.Cloud.Datastore.V1

Assembly

Google.Cloud.Datastore.V1.dll

Constructors

Count()

public Count()

Count(AggregationQuery.Types.Aggregation.Types.Count)

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

Properties

UpTo

public long? UpTo { get; set; }

Optional. Optional constraint on the maximum number of entities to count.

This provides a way to set an upper bound on the number of entities to scan, limiting latency and cost.

Unspecified is interpreted as no bound.

If a zero value is provided, a count result of zero should always be expected.

High-Level Example:

AGGREGATE COUNT_UP_TO(1000) OVER ( SELECT * FROM k );

Requires:

  • Must be non-negative when present.
Property Value
TypeDescription
Nullable<Int64>