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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                ## Range Aggregation A multi-bucket value source based aggregation that enables the user to define a set of ranges-每個代表一個bucket。在聚合過程中,從每個文件中提取的值將根據每個存儲區范圍進行檢查,并對相關/匹配文檔進行“bucket”,值得注意的是,注意,此聚合包含了from值,不包括每個范圍的to的值。 例子: | `{` `"aggs" : {` `"price_ranges" : {` `"range" : {` `"field" : "price",` `"ranges" : [` `{ "to" : 50 },` `{ "from" : 50, "to" : 100 },` `{ "from" : 100 }` `]` `}` `}` `}` `}` | 響應結果: | `{` `...` `"aggregations": {` `"price_ranges" : {` `"buckets": [` `{` `"to": 50,` `"doc_count": 2` `},` `{` `"from": 50,` `"to": 100,` `"doc_count": 4` `},` `{` `"from": 100,` `"doc_count": 4` `}` `]` `}` `}` `}` | ### Keyed Response 將keyed標志設置為true會將一個惟一的字符串鍵與每個bucket關聯起來,并將范圍作為散列而不是數組返回: | `{` `"aggs" : {` `"price_ranges" : {` `"range" : {` `"field" : "price",` `"keyed" : true,` `"ranges" : [` `{ "to" : 50 },` `{ "from" : 50, "to" : 100 },` `{ "from" : 100 }` `]` `}` `}` `}` `}` | 響應結果: | `{` `...` `"aggregations": {` `"price_ranges" : {` `"buckets": {` `"*-50.0": {` `"to": 50,` `"doc_count": 2` `},` `"50.0-100.0": {` `"from": 50,` `"to": 100,` `"doc_count": 4` `},` `"100.0-*": {` `"from": 100,` `"doc_count": 4` `}` `}` `}` `}` `}` | 可以為每個范圍自定義key: | `{` `"aggs" : {` `"price_ranges" : {` `"range" : {` `"field" : "price",` `"keyed" : true,` `"ranges" : [` `{ "key" : "cheap", "to" : 50 },` `{ "key" : "average", "from" : 50, "to" : 100 },` `{ "key" : "expensive", "from" : 100 }` `]` `}` `}` `}` `}` | ### Script | `{` `"aggs" : {` `"price_ranges" : {` `"range" : {` `"script" : {` `"lang": "painless",` `"inline": "doc['price'].value"` `},` `"ranges" : [` `{ "to" : 50 },` `{ "from" : 50, "to" : 100 },` `{ "from" : 100 }` `]` `}` `}` `}` `}` | 這將把script參數解釋為具有painless腳本語言和no script參數的inline腳本。要使用文件腳本,請使用以下語法 | `{` `"aggs" : {` `"price_ranges" : {` `"range" : {` `"script" : {` `"file": "my_script",` `"params": {` `"field": "price"` `}` `},` `"ranges" : [` `{ "to" : 50 },` `{ "from" : 50, "to" : 100 },` `{ "from" : 100 }` `]` `}` `}` `}` `}` | 對于索引腳本,用id參數替換file參數。 ### Value Script 假設產品價格是美元,但我們希望得到歐元的價格區間,我們可以使用value script在聚合之前轉換價格(假設匯率是0.8) | `{` `"aggs" : {` `"price_ranges" : {` `"range" : {` `"field" : "price",` `"script" : {` `"lang": "painless",` `"inline": "_value * params.conversion_rate",` `"params" : {` `"conversion_rate" : 0.8` `}` `},` `"ranges" : [` `{ "to" : 35 },` `{ "from" : 35, "to" : 70 },` `{ "from" : 70 }` `]` `}` `}` `}` `}` | ### Sub Aggregations 下面的示例不僅將文檔“bucket”到不同的bucket,而且計算每個價格范圍內的價格統計 | `{` `"aggs" : {` `"price_ranges" : {` `"range" : {` `"field" : "price",` `"ranges" : [` `{ "to" : 50 },` `{ "from" : 50, "to" : 100 },` `{ "from" : 100 }` `]` `},` `"aggs" : {` `"price_stats" : {` `"stats" : { "field" : "price" }` `}` `}` `}` `}` `}` | 響應結果: | `{` `"aggregations": {` `"price_ranges" : {` `"buckets": [` `{` `"to": 50,` `"doc_count": 2,` `"price_stats": {` `"count": 2,` `"min": 20,` `"max": 47,` `"avg": 33.5,` `"sum": 67` `}` `},` `{` `"from": 50,` `"to": 100,` `"doc_count": 4,` `"price_stats": {` `"count": 4,` `"min": 60,` `"max": 98,` `"avg": 82.5,` `"sum": 330` `}` `},` `{` `"from": 100,` `"doc_count": 4,` `"price_stats": {` `"count": 4,` `"min": 134,` `"max": 367,` `"avg": 216,` `"sum": 864` `}` `}` `]` `}` `}` `}` | 如果sub aggregation(子集合)也基于與范圍聚合相同的值(如上例中的統計信息聚合),則可以省略其值的定義。以下內容將返回與上述相同的結果 | `{` `"aggs" : {` `"price_ranges" : {` `"range" : {` `"field" : "price",` `"ranges" : [` `{ "to" : 50 },` `{ "from" : 50, "to" : 100 },` `{ "from" : 100 }` `]` `},` `"aggs" : {` `"price_stats" : {` `"stats" : {} #1` `}` `}` `}` `}` `}` | #1 ?我們不需要指定price,因為我們默認從父范圍聚合“繼承”它
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                              哎呀哎呀视频在线观看