Class: Google::Cloud::Datastore::V1::AggregationQuery::Aggregation::Count

Inherits:
Object
  • Object
show all
Extended by:
Protobuf::MessageExts::ClassMethods
Includes:
Protobuf::MessageExts
Defined in:
proto_docs/google/datastore/v1/query.rb

Overview

Count of entities that match the query.

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

Instance Attribute Summary collapse

Instance Attribute Details

#up_to ⇒ ::Google::Protobuf::Int64Value

Returns 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.

Returns:

  • (::Google::Protobuf::Int64Value) —

    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.


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# File 'proto_docs/google/datastore/v1/query.rb', line 224

class Count
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods
end