Class: Google::Cloud::Firestore::V1::StructuredAggregationQuery
- Inherits:
-
Object
- Object
- Google::Cloud::Firestore::V1::StructuredAggregationQuery
- Extended by:
- Protobuf::MessageExts::ClassMethods
- Includes:
- Protobuf::MessageExts
- Defined in:
- proto_docs/google/firestore/v1/query.rb
Overview
Firestore query for running an aggregation over a StructuredQuery.
Defined Under Namespace
Classes: Aggregation
Instance Attribute Summary collapse
-
#aggregations ⇒ ::Array<::Google::Cloud::Firestore::V1::StructuredAggregationQuery::Aggregation>
Optional.
-
#structured_query ⇒ ::Google::Cloud::Firestore::V1::StructuredQuery
Nested structured query.
Instance Attribute Details
#aggregations ⇒ ::Array<::Google::Cloud::Firestore::V1::StructuredAggregationQuery::Aggregation>
Returns Optional. Series of aggregations to apply over the results of the
structured_query
.
Requires:
- A minimum of one and maximum of five aggregations per query.
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# File 'proto_docs/google/firestore/v1/query.rb', line 391 class StructuredAggregationQuery include ::Google::Protobuf::MessageExts extend ::Google::Protobuf::MessageExts::ClassMethods # Defines an aggregation that produces a single result. # @!attribute [rw] count # @return [::Google::Cloud::Firestore::V1::StructuredAggregationQuery::Aggregation::Count] # Count aggregator. # @!attribute [rw] sum # @return [::Google::Cloud::Firestore::V1::StructuredAggregationQuery::Aggregation::Sum] # Sum aggregator. # @!attribute [rw] avg # @return [::Google::Cloud::Firestore::V1::StructuredAggregationQuery::Aggregation::Avg] # Average aggregator. # @!attribute [rw] alias # @return [::String] # Optional. Optional name of the field to store the result of the # aggregation into. # # If not provided, Firestore will pick a default name following the format # `field_<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(*) # OVER ( # ... # ); # ``` # # becomes: # # ``` # AGGREGATE # COUNT_UP_TO(1) AS count_up_to_1, # COUNT_UP_TO(2) AS field_1, # COUNT_UP_TO(3) AS count_up_to_3, # COUNT(*) AS field_2 # OVER ( # ... # ); # ``` # # Requires: # # * Must be unique across all aggregation aliases. # * Conform to {::Google::Cloud::Firestore::V1::Document#fields document field name} # limitations. class Aggregation include ::Google::Protobuf::MessageExts extend ::Google::Protobuf::MessageExts::ClassMethods # Count of documents that match the query. # # The `COUNT(*)` aggregation function operates on the entire document # so it does not require a field reference. # @!attribute [rw] up_to # @return [::Google::Protobuf::Int64Value] # Optional. Optional constraint on the maximum number of documents to # count. # # This provides a way to set an upper bound on the number of documents # to scan, limiting latency, and cost. # # Unspecified is interpreted as no bound. # # High-Level Example: # # ``` # AGGREGATE COUNT_UP_TO(1000) OVER ( SELECT * FROM k ); # ``` # # Requires: # # * Must be greater than zero when present. class Count include ::Google::Protobuf::MessageExts extend ::Google::Protobuf::MessageExts::ClassMethods end # Sum of the values of the requested field. # # * Only numeric values will be aggregated. All non-numeric values # including `NULL` are skipped. # # * If the aggregated values contain `NaN`, returns `NaN`. Infinity math # follows IEEE-754 standards. # # * If the aggregated value set is empty, returns 0. # # * Returns a 64-bit integer if all aggregated numbers are integers and the # sum result does not overflow. Otherwise, the result is returned as a # double. Note that even if all the aggregated values are integers, the # result is returned as a double if it cannot fit within a 64-bit signed # integer. When this occurs, the returned value will lose precision. # # * When underflow occurs, floating-point aggregation is non-deterministic. # This means that running the same query repeatedly without any changes to # the underlying values could produce slightly different results each # time. In those cases, values should be stored as integers over # floating-point numbers. # @!attribute [rw] field # @return [::Google::Cloud::Firestore::V1::StructuredQuery::FieldReference] # The field to aggregate on. class Sum include ::Google::Protobuf::MessageExts extend ::Google::Protobuf::MessageExts::ClassMethods end # Average of the values of the requested field. # # * Only numeric values will be aggregated. All non-numeric values # including `NULL` are skipped. # # * If the aggregated values contain `NaN`, returns `NaN`. Infinity math # follows IEEE-754 standards. # # * If the aggregated value set is empty, returns `NULL`. # # * Always returns the result as a double. # @!attribute [rw] field # @return [::Google::Cloud::Firestore::V1::StructuredQuery::FieldReference] # The field to aggregate on. class Avg include ::Google::Protobuf::MessageExts extend ::Google::Protobuf::MessageExts::ClassMethods end end end |
#structured_query ⇒ ::Google::Cloud::Firestore::V1::StructuredQuery
Returns Nested structured query.
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# File 'proto_docs/google/firestore/v1/query.rb', line 391 class StructuredAggregationQuery include ::Google::Protobuf::MessageExts extend ::Google::Protobuf::MessageExts::ClassMethods # Defines an aggregation that produces a single result. # @!attribute [rw] count # @return [::Google::Cloud::Firestore::V1::StructuredAggregationQuery::Aggregation::Count] # Count aggregator. # @!attribute [rw] sum # @return [::Google::Cloud::Firestore::V1::StructuredAggregationQuery::Aggregation::Sum] # Sum aggregator. # @!attribute [rw] avg # @return [::Google::Cloud::Firestore::V1::StructuredAggregationQuery::Aggregation::Avg] # Average aggregator. # @!attribute [rw] alias # @return [::String] # Optional. Optional name of the field to store the result of the # aggregation into. # # If not provided, Firestore will pick a default name following the format # `field_<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(*) # OVER ( # ... # ); # ``` # # becomes: # # ``` # AGGREGATE # COUNT_UP_TO(1) AS count_up_to_1, # COUNT_UP_TO(2) AS field_1, # COUNT_UP_TO(3) AS count_up_to_3, # COUNT(*) AS field_2 # OVER ( # ... # ); # ``` # # Requires: # # * Must be unique across all aggregation aliases. # * Conform to {::Google::Cloud::Firestore::V1::Document#fields document field name} # limitations. class Aggregation include ::Google::Protobuf::MessageExts extend ::Google::Protobuf::MessageExts::ClassMethods # Count of documents that match the query. # # The `COUNT(*)` aggregation function operates on the entire document # so it does not require a field reference. # @!attribute [rw] up_to # @return [::Google::Protobuf::Int64Value] # Optional. Optional constraint on the maximum number of documents to # count. # # This provides a way to set an upper bound on the number of documents # to scan, limiting latency, and cost. # # Unspecified is interpreted as no bound. # # High-Level Example: # # ``` # AGGREGATE COUNT_UP_TO(1000) OVER ( SELECT * FROM k ); # ``` # # Requires: # # * Must be greater than zero when present. class Count include ::Google::Protobuf::MessageExts extend ::Google::Protobuf::MessageExts::ClassMethods end # Sum of the values of the requested field. # # * Only numeric values will be aggregated. All non-numeric values # including `NULL` are skipped. # # * If the aggregated values contain `NaN`, returns `NaN`. Infinity math # follows IEEE-754 standards. # # * If the aggregated value set is empty, returns 0. # # * Returns a 64-bit integer if all aggregated numbers are integers and the # sum result does not overflow. Otherwise, the result is returned as a # double. Note that even if all the aggregated values are integers, the # result is returned as a double if it cannot fit within a 64-bit signed # integer. When this occurs, the returned value will lose precision. # # * When underflow occurs, floating-point aggregation is non-deterministic. # This means that running the same query repeatedly without any changes to # the underlying values could produce slightly different results each # time. In those cases, values should be stored as integers over # floating-point numbers. # @!attribute [rw] field # @return [::Google::Cloud::Firestore::V1::StructuredQuery::FieldReference] # The field to aggregate on. class Sum include ::Google::Protobuf::MessageExts extend ::Google::Protobuf::MessageExts::ClassMethods end # Average of the values of the requested field. # # * Only numeric values will be aggregated. All non-numeric values # including `NULL` are skipped. # # * If the aggregated values contain `NaN`, returns `NaN`. Infinity math # follows IEEE-754 standards. # # * If the aggregated value set is empty, returns `NULL`. # # * Always returns the result as a double. # @!attribute [rw] field # @return [::Google::Cloud::Firestore::V1::StructuredQuery::FieldReference] # The field to aggregate on. class Avg include ::Google::Protobuf::MessageExts extend ::Google::Protobuf::MessageExts::ClassMethods end end end |