Aggregate doc_count per document and not per nested item?

Elastic Stack Elasticsearch
1

Hi, my documents have the following document structure (I changed the document type to frog and colors per year here to make it more clear):

{
    "id": "489191",
    "type": "frog",
    "color_types": [
        {
            "year": "1990",
            "colors": [
                "red",
                "green"
            ]
        },
        {
            "year": "1991",
            "colors": [
                "red",
                "blue"
            ]
        }
    ]
}

Now if I do an aggregation on this as folows, I get 2 for doc_count on red.

{
    "aggs": {
        "color_aggregation": {
            "nested": {
                "path": "color_types"
            },
            "aggs": {
                "nested": {
                    "terms": {
                        "field": "color_types.colors",
                            "order": {
                            "_term": "desc"
                        },
                        "size": 10
                    }
                }
            }
        }
    }
}

These are the results:

{
    "key": "red",
    "doc_count": 2
},
{
    "key": "green",
    "doc_count": 1
},
{
    "key": "blue",
    "doc_count": 1
},

As you can see I get 2 for red, whereas there is only one frog. I know this is normal behaviour, but how can I change the doc_count to count the number of documents (frogs) and not the number of nested items?

Thanks in advance for your help.

2

OK it seems like this works

{
    "aggs": {
        "color_aggregation": {
            "nested": {
                "path": "color_types"
            },
            "aggs": {
                "nested": {
                    "terms": {
                        "field": "color_types.colors",
                            "order": {
                            "_term": "desc"
                        },
                        "size": 10
                    },
                     "aggs": {
                         "reversed_nested": {
                             "reverse_nested": {
                         }
                      }
                    }
                }
            }
        }
    }
}
3

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