Filter aggregations
A filter aggregation is a query clause, exactly like a search query — match or term or range. You can use the filter aggregation to narrow down the entire set of documents to a specific set before creating buckets.
The following example shows the avg aggregation running within the context of a filter. The avg aggregation only aggregates the documents that match the range query:
GET opensearch_dashboards_sample_data_ecommerce/_search
{
"size": 0,
"aggs": {
"low_value": {
"filter": {
"range": {
"taxful_total_price": {
"lte": 50
}
}
},
"aggs": {
"avg_amount": {
"avg": {
"field": "taxful_total_price"
}
}
}
}
}
}
Example response
...
"aggregations" : {
"low_value" : {
"doc_count" : 1633,
"avg_amount" : {
"value" : 38.363175998928355
}
}
}
}