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Filter Aggregation
editFilter Aggregation
editDefines a single bucket of all the documents in the current document set context that match a specified filter. Often this will be used to narrow down the current aggregation context to a specific set of documents.
Example:
POST /sales/_search?size=0
{
"aggs" : {
"t_shirts" : {
"filter" : { "term": { "type": "t-shirt" } },
"aggs" : {
"avg_price" : { "avg" : { "field" : "price" } }
}
}
}
}
In the above example, we calculate the average price of all the products that are of type t-shirt.
Response:
{
...
"aggregations" : {
"t_shirts" : {
"doc_count" : 3,
"avg_price" : { "value" : 128.33333333333334 }
}
}
}