这个聚合使用于做分桶后的过滤的，父聚合传下来的参数需要为数值型，聚合中的script需要返回一个布尔型的结果
语法
{
"bucket_selector": {
"buckets_path": {
"my_var1": "the_sum",
"my_var2": "the_value_count"
},
"script": "params.my_var1 > params.my_var2"
}
}
参数
| 参数 | 描述 | 是否必填 | 默认值 |
|---|---|---|---|
| script | 过滤条件 | 是 | |
| buckets_path | 上层聚合的变量 | 是 | |
| gap_policy | 当出现间隔时候的处理方式 | 否 | skip |
#示例 返回按月聚合后销售额大于400的结果
POST /sales/_search
{
"size": 0,
"aggs" : {
"sales_per_month" : {
"date_histogram" : {
"field" : "date",
"interval" : "month"
},
"aggs": {
"total_sales": {
"sum": {
"field": "price"
}
},
"sales_bucket_filter": {
"bucket_selector": {
"buckets_path": {
"totalSales": "total_sales"
},
"script": "params.totalSales > 200"
}
}
}
}
}
}
返回结果
{
"took": 11,
"timed_out": false,
"_shards": ...,
"hits": ...,
"aggregations": {
"sales_per_month": {
"buckets": [
{
"key_as_string": "2015/01/01 00:00:00",
"key": 1420070400000,
"doc_count": 3,
"total_sales": {
"value": 550.0
}
},
{
"key_as_string": "2015/03/01 00:00:00",
"key": 1425168000000,
"doc_count": 2,
"total_sales": {
"value": 375.0
},
}
]
}
}
}
