WARNING: Version 5.x has passed its EOL date.

This documentation is no longer being maintained and may be removed. If you are running this version, we strongly advise you to upgrade. For the latest information, see the current release documentation.

Elastic Docs ›Elasticsearch.Net and NEST: the .NET clients [1.x] ›Aggregations
« Range aggregation Reverse Nested aggregation »

Nested aggregationedit

A special single bucket aggregation that enables aggregating nested documents.

Fluent DSLedit

var result = client.Search<ElasticsearchProject>(s => s
    .Aggregations(a => a
        .Nested("my_nested_agg", n => n
            .Path("contributors")
            .Aggregations(aa => aa
                .Average("my_avg_agg", avg => avg
                    .Field(p => p.Contributors.First().Age)
                )
            )
        )
    )
);

var nestedAgg = result.Aggs.Nested("my_nested_agg");
var avgAgg = nestedAgg.Average("my_ avg_agg");

Object Initializer Syntaxedit

var request = new SearchRequest
{
    Aggregations = new Dictionary<string, IAggregationContainer>
    {
        { "my_nested_agg", new AggregationContainer
            {
                Nested = new NestedAggregator
                {
                    Path = "contributors"
                },
                Aggregations = new Dictionary<string, IAggregationContainer>
                {
                    { "my_avg_agg", new AggregationContainer
                        {
                            Average = new AverageAggregator
                            {
                                Field = "contributors.age"
                            }
                        }
                    }
                }
            }
        }
    }
};

var result = client.Search<ElasticsearchProject>(request);

var nestedAgg = result.Aggs.Nested("my_nested_agg");
var avgAgg = nestedAgg.Average("my_avg_agg");

Refer to the original docs for more information.

« Range aggregation Reverse Nested aggregation »