Elasticsearch如何使用條件

Question

排序我ElasticSearch（2.x的）我有這樣的文件：

{ 
    "title": "A good title", 
    "formats": [{ 
     "name": "pdf", 
     "prices": [{ 
      "price": 11.99, 
      "currency": "EUR" 
     }, { 
      "price": 18.99, 
      "currency": "AUD" 
     }] 
    }] 
} 

我想通過文件，但formats.prices.price的formats.prices.currency === 'EUR'

我想只有在排序做一個嵌套的領域上formats.prices，然後運行該查詢：

{ 
    "query": { 
    "filtered": { 
     "query": { 
     "and": [ 
      { 
      "match_all": {} 
      } 
     ] 
     } 
    } 
    }, 
    "sort": { 
    "formats.prices.price": { 
     "order": "desc", 
     "nested_path": "formats.prices", 
     "nested_filter": { 
     "term": { 
      "currency": "EUR" 
     } 
     } 
    } 
    } 
} 

但不幸的是，我不能得到正確的順序。

UPDATE：映射 有關部分：

"formats": { 
     "properties": { 
      "name": { 
      "type": "string" 
      }, 
      "prices": { 
      "type": "nested", 
      "include_in_parent": true, 
      "properties": { 
       "currency": { 
       "type": "string" 
       }, 
       "price": { 
       "type": "double" 
       } 
      } 
      } 
     } 
     }, 

Answer 1

我希望這將解決您的問題

{ 
    "query": { 
    "bool": { 
     "must": [ 
     { 
      "nested": { 
      "path": "formats.prices", 
      "filter": { 
       "match": { 
       "formats.prices.currency": "EUR" 
       } 
      } 
      } 
     } 
     ] 
    } 
    }, 
    "from": 0, 
    "size": 50, 
    "sort": [ 
    { 
     "formats.prices.price": { 
     "order": "asc", 
     "nested_path": "formats.prices", 
     "nested_filter": { 
      "match": { 
      "formats.prices.currency": "EUR" 
      } 
     } 
     } 
    } 
    ] 
}