init_script 定义
map_script 操作 判断
combine_script 操作返回记录
reduce_script 返回sum值
{
"size": 0,
"query": {
"bool": {
"must": [
{
"range": {
"purchase_date": {
"from": "2019-08-12 00:00:00",
"to": "2019-08-18 23:59:59",
"include_lower": true,
"include_upper": true,
"format": "yyyy-MM-dd HH:mm:ss",
"boost": 1
}
}
}
],
"adjust_pure_negative": true,
"boost": 1
}
},
"aggregations": {
"total_purchase_amount": {
"sum": {
"field": "total_purchase_amount",
"format": "0.000"
}
},
"purchase_quantity": {
"sum": {
"field": "purchase_quantity",
"format": "0"
}
},
"freight": {
"scripted_metric": {
"init_script": {
"source": "params._agg.list= new ArrayList();params._agg.map = new HashMap();",
"lang": "painless"
},
"map_script": {
"source": "if(!params._agg.map.containsKey(doc['purchase_order_no.keyword'].value)){params._agg.map.put(doc['purchase_order_no.keyword'].value,doc['freight'].value)}",
"lang": "painless"
},
"combine_script": {
"source": "double profit = 0; for (t in params._agg.map.values()) { profit += t } return profit",
"lang": "painless"
},
"reduce_script": {
"source": "double profit = 0; for (a in params._aggs) { profit += a } return profit",
"lang": "painless"
}
}
}
}
}
