Reference documentation and code samples for the Google Cloud Datastore v1 API class AggregationQuery.Types.Aggregation.Types.Sum.
Sum of the values of the requested property.
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.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07 UTC."],[[["\u003cp\u003eThis document provides reference information for the \u003ccode\u003eAggregationQuery.Types.Aggregation.Types.Sum\u003c/code\u003e class within the Google Cloud Datastore v1 API, specifically detailing its functionality and usage in the .NET environment.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eSum\u003c/code\u003e class is used to calculate the sum of values for a specified property in a Datastore query, only aggregating numeric values and skipping non-numeric data, including null values.\u003c/p\u003e\n"],["\u003cp\u003eThe sum operation handles various scenarios, including the presence of \u003ccode\u003eNaN\u003c/code\u003e (returning \u003ccode\u003eNaN\u003c/code\u003e), empty value sets (returning 0), and overflow conditions (returning the result as a double when it exceeds a 64-bit integer capacity).\u003c/p\u003e\n"],["\u003cp\u003eThe result type of a sum aggregation is dependent on the values, if all values are integers and the result doesn't overflow it will return an integer, otherwise it will return a double, potentially loosing precision.\u003c/p\u003e\n"],["\u003cp\u003eThe document lists the available versions for \u003ccode\u003eGoogle.Cloud.Datastore.V1\u003c/code\u003e ranging from the latest version, 4.15.0, down to 3.2.0, including the version 4.11.0, within which the \u003ccode\u003eSum\u003c/code\u003e class is found.\u003c/p\u003e\n"]]],[],null,[]]
