[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-09-04 UTC."],[],[],null,["# Class SumAggregation (2.31.2)\n\nVersion latestkeyboard_arrow_down\n\n- [2.31.2 (latest)](/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.aggregation.SumAggregation)\n- [2.31.1](/java/docs/reference/google-cloud-datastore/2.31.1/com.google.cloud.datastore.aggregation.SumAggregation)\n- [2.30.0](/java/docs/reference/google-cloud-datastore/2.30.0/com.google.cloud.datastore.aggregation.SumAggregation)\n- [2.29.1](/java/docs/reference/google-cloud-datastore/2.29.1/com.google.cloud.datastore.aggregation.SumAggregation)\n- [2.28.2](/java/docs/reference/google-cloud-datastore/2.28.2/com.google.cloud.datastore.aggregation.SumAggregation)\n- [2.27.1](/java/docs/reference/google-cloud-datastore/2.27.1/com.google.cloud.datastore.aggregation.SumAggregation)\n- [2.26.4](/java/docs/reference/google-cloud-datastore/2.26.4/com.google.cloud.datastore.aggregation.SumAggregation)\n- [2.25.2](/java/docs/reference/google-cloud-datastore/2.25.2/com.google.cloud.datastore.aggregation.SumAggregation)\n- [2.24.3](/java/docs/reference/google-cloud-datastore/2.24.3/com.google.cloud.datastore.aggregation.SumAggregation)\n- [2.23.0](/java/docs/reference/google-cloud-datastore/2.23.0/com.google.cloud.datastore.aggregation.SumAggregation)\n- [2.22.0](/java/docs/reference/google-cloud-datastore/2.22.0/com.google.cloud.datastore.aggregation.SumAggregation)\n- [2.21.3](/java/docs/reference/google-cloud-datastore/2.21.3/com.google.cloud.datastore.aggregation.SumAggregation)\n- [2.20.2](/java/docs/reference/google-cloud-datastore/2.20.2/com.google.cloud.datastore.aggregation.SumAggregation)\n- [2.19.2](/java/docs/reference/google-cloud-datastore/2.19.2/com.google.cloud.datastore.aggregation.SumAggregation)\n- [2.18.5](/java/docs/reference/google-cloud-datastore/2.18.5/com.google.cloud.datastore.aggregation.SumAggregation)\n- [2.17.6](/java/docs/reference/google-cloud-datastore/2.17.6/com.google.cloud.datastore.aggregation.SumAggregation) \n\n public class SumAggregation extends Aggregation\n\nRepresents an [Aggregation](/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.aggregation.Aggregation) which returns sum of numerical values. \n\nInheritance\n-----------\n\n[Object](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html) \\\u003e [Aggregation](/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.aggregation.Aggregation) \\\u003e SumAggregation \n\nInherited Members\n-----------------\n\n[Aggregation.aggregationBuilder()](/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.aggregation.Aggregation#com_google_cloud_datastore_aggregation_Aggregation_aggregationBuilder__) \n[Aggregation.avg(String)](/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.aggregation.Aggregation#com_google_cloud_datastore_aggregation_Aggregation_avg_java_lang_String_) \n[Aggregation.count()](/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.aggregation.Aggregation#com_google_cloud_datastore_aggregation_Aggregation_count__) \n[Aggregation.getAlias()](/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.aggregation.Aggregation#com_google_cloud_datastore_aggregation_Aggregation_getAlias__) \n[Aggregation.sum(String)](/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.aggregation.Aggregation#com_google_cloud_datastore_aggregation_Aggregation_sum_java_lang_String_) \n[Aggregation.toPb()](/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.aggregation.Aggregation#com_google_cloud_datastore_aggregation_Aggregation_toPb__) \n[Object.clone()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#clone--) \n[Object.equals(Object)](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#equals-java.lang.Object-) \n[Object.finalize()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#finalize--) \n[Object.getClass()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#getClass--) \n[Object.hashCode()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#hashCode--) \n[Object.notify()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notify--) \n[Object.notifyAll()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#notifyAll--) \n[Object.toString()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#toString--) \n[Object.wait()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait--) \n[Object.wait(long)](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-) \n[Object.wait(long,int)](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-int-)\n\nConstructors\n------------\n\n### SumAggregation(String alias, String propertyReference)\n\n public SumAggregation(String alias, String propertyReference)\n\nMethods\n-------\n\n### equals(Object o)\n\n public boolean equals(Object o)\n\n**Overrides** \n[Object.equals(Object)](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#equals-java.lang.Object-)\n\n### hashCode()\n\n public int hashCode()\n\n**Overrides** \n[Object.hashCode()](https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#hashCode--)\n\n### toPb()\n\n public AggregationQuery.Aggregation toPb()\n\n| **Internal Only**: This feature is not stable for application use.\n\n**Overrides** \n[Aggregation.toPb()](/java/docs/reference/google-cloud-datastore/latest/com.google.cloud.datastore.aggregation.Aggregation#com_google_cloud_datastore_aggregation_Aggregation_toPb__)"]]
