将查询添加到具有date_histogram和聚合的查询中的过滤器

Question

I need to display a table of units sold this year by month by category.
For example:

2015      Jan  Feb  Mar  Apr May  Jun  Jul  Aug
category1  19   25   30   51  12   10    0    0
category2 105  110  125  131 209  233  310   80
category3  33   35   37    0   0    0    0    0

Here's my query. Note that I'm missing the "this year" requirement. How do I add it? Adding a filter as the first child of "doc" gives an error: Found two aggregation type definitions in [doc]

{
    "doc": {
        "date_histogram": {
            "field": "sale_createdDateTime",
            "interval": "month",
            "format": "yyyy-MM-dd",
            "min_doc_count": 0,
            "extended_bounds": {
                 "min": "2015-01-01",
                 "max": "2015-12-31"
             }
        },
        "aggs": {
            "per_category": {
                "terms": {
                    "field": "product_category"
                }
            }
        }
    }
}

Answer 1

You need to wrap your current aggregation within the filter Aggregation . So the filter is not the first child of doc , but the first child of aggs . then, you have a nested aggs with your current aggregation. The result should be somewhat similar to :

{
    "aggs": {
        "per_category": {
            "filtered_agg": {
                "filter": {
                    /*YEAR FILTER HERE*/
                },
                "aggs": {
                    "nested_terms_agg": {
                        "terms": {
                            "field": "product_category"
                        }
                    }
                }
            }
        }
    }
}

( NOTE: filtered_agg and nested_terms_agg are just names I chose)