Aggregation for Individual Query in should Array

[Manisekhar_techo (Manishekar Simhadri)]

Hi All,

is there a way for me to perform the aggregation for all the Matching documents inside the bool should array individually.

{
    "query": {
        "bool": {
            "should": [
                {
                    "multi_match": {
                        "fields": [
                            "title",
                            "abstract"
                        ],
                        "query": "welding",
                        "type": "phrase",
                        "_name": "welding"
                    }
                },
                {
                    "multi_match": {
                        "fields": [
                            "title",
                            "abstract"
                        ],
                        "query": "gmaw",
                        "type": "phrase",
                        "_name": "gmaw"
                    }
                }
            ]
        }
    },
    "aggregations": {
        "dates": {
            "date_histogram": {
                "field": "date",
                "interval": "year",
                "format": "yyyy"
            }
        }
    }
}

this will give me Doc count per Year for the Above query.
But, can I get the Aggregations separately for each query item in the should array.
I'm expecting something like this:

{
    "welding": [
        {
            "year": 2020,
            "count": 15
        },
        {
            "year": 2019,
            "count": 11
        }
    ],
    "gmaw": [
         {
            "year": 2020,
            "count": 15
        },
        {
            "year": 2019,
            "count": 11
        }
    ]
}

Any suggestion is Much Appreciated.
Thanks.

[Mark_Harwood]

Hi Manishekar,
Check out the filters aggregation to group sub aggregations by queries.

[Manisekhar_techo (Manishekar Simhadri)]

Thanks Mark for the Help.
I've used the same filters aggregation and nested the "aggs" for the desired date histogram aggregation.

{
    "size": 0,
    "aggs": {
        "gmaw": {
            "filter": {
                "multi_match": {
                    "query": "gmaw",
                    "type": "phrase",
                    "fields": [
                        "title"
                    ],
                    "boost": 25,
                    "_name": "gmaw"
                }
            },
            "aggs": {
                "dates": {
                    "date_histogram": {
                        "field": "date",
                        "interval": "year",
                        "format": "yyyy"
                    }
                }
            }
        }
    }
}

[Mark_Harwood]

That's the filter aggregation.
The filters aggregation (note the plural) lets you list multiple queries e.g. like the 2 in your original question.