如何将双精度舍入到小数点后两位 - elasticsearch

Question

我在弹性搜索中有如下​​文档：

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{\n                "entityFk": 0,\n                "entityCode": "ADM",\n                "entityObj": {\n                    "id": 0,\n                    "code": "ADM",\n                    "description": "ADM - FIRSTCOM"\n                },\n                "practiceFk": 54745,\n                "practiceObj": {\n                    "id": 54745,\n                    "code": "33.04.01.32",\n                    "description": "Artrotomia ou artroscopia com tratamento de les\xc3\xb5es articulares circunscritas  ",\n                    "practiceValue": 23.5\n                }\n            }\n        }\n

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我想对所有EntityCode.description等于“FIRST”的“practiceValue”（不为空）求和，所以我做了这个查询：

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    {\n    "size" : 0,\n    "query" : {\n        "bool" : {\n            "must_not" : [\n                {\n                    "missing" : { "field" : "practiceObj.practiceValue" }\n                }\n             ],\n             "must" : [\n                {\n                    "match" : { "entityObj.description" : "FIRST" }\n                }\n             ]\n         }\n    },\n    "aggs" : {\n        "total" : {  \n            "sum" : { "field" : "practiceObj.practiceValue"} \n\n        }\n    }\n}\n

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这是我得到的结果：

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   {\n    "took": 26,\n    "timed_out": false,\n    "_shards": {\n        "total": 5,\n        "successful": 5,\n        "failed": 0\n    },\n    "hits": {\n        "total": 11477,\n        "max_score": 0,\n        "hits": []\n    },\n    "aggregations": {\n        "total": {\n            "value": 1593598.7499999984\n        }\n    }\n}\n

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问题是：我怎样才能将值四舍五入到小数点后两位。\n有人可以帮忙吗？\n谢谢。

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编辑：

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这里\xc2\xb4s我的映射：

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 {\n    "index_practice_entities": {\n        "mappings": {\n            "practice_entities_search": {\n                "properties": {\n                    "entityCode": {\n                        "type": "string"\n                    },\n                    "entityFk": {\n                        "type": "long"\n                    },\n                    "entityObj": {\n                        "properties": {\n                            "code": {\n                                "type": "string"\n                            },\n                            "description": {\n                                "type": "string"\n                            },\n                            "id": {\n                                "type": "long"\n                            }\n                        }\n                    },\n                    "practiceFk": {\n                        "type": "long"\n                    },\n                    "practiceObj": {\n                        "properties": {\n                            "code": {\n                                "type": "string"\n                            },\n                            "description": {\n                                "type": "string"\n                            },\n                            "id": {\n                                "type": "long"\n                            },\n                            "practiceValue": {\n                                "type": "double"\n                            }\n                        }\n                    }\n                }\n            }\n        }\n    }\n}\n

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Answer 1

请尝试下面提到的脚本，它会将聚合值四舍五入到小数点后两位。

"aggs" : {
        "total" : {  
            "sum" : { 
              "script" : "Math.round(doc['practiceObj.practiceValue'].value*100)/100.0"
               } 

        }
    }