如何在 Azure 認知搜索中搜索復雜字段

Question

考慮以下 model，其中Address具有City的嵌套屬性

{
  "HotelId": "1",
  "HotelName": "Secret Point Motel",
  "Description": "Ideally located on the main commercial artery of the city in the heart of New York.",
  "Tags": ["Free wifi", "on-site parking", "indoor pool", "continental breakfast"],
  "Address": {
    "StreetAddress": "677 5th Ave",
    "City": "New York",
    "StateProvince": "NY"
  },
  "Rooms": [
    {
      "Description": "Budget Room, 1 Queen Bed (Cityside)",
      "RoomNumber": 1105,
      "BaseRate": 96.99,
    },
    {
      "Description": "Deluxe Room, 2 Double Beds (City View)",
      "Type": "Deluxe Room",
      "BaseRate": 150.99,
    }
    . . .
  ]
}

model 在 Azure 認知搜索中的索引如下，其中Address設置為Edm.ComplexType

{
  "name": "hotels",
  "fields": [
    { "name": "HotelId", "type": "Edm.String", "key": true, "filterable": true },
    { "name": "HotelName", "type": "Edm.String", "searchable": true, "filterable": false },
    { "name": "Description", "type": "Edm.String", "searchable": true, "analyzer": "en.lucene" },
    { "name": "Address", "type": "Edm.ComplexType",
      "fields": [
        { "name": "StreetAddress", "type": "Edm.String", "filterable": false, "sortable": false, "facetable": false, "searchable": true },
        { "name": "City", "type": "Edm.String", "searchable": true, "filterable": true, "sortable": true, "facetable": true },
        { "name": "StateProvince", "type": "Edm.String", "searchable": true, "filterable": true, "sortable": true, "facetable": true }
      ]
    },
    { "name": "Rooms", "type": "Collection(Edm.ComplexType)",
      "fields": [
        { "name": "Description", "type": "Edm.String", "searchable": true, "analyzer": "en.lucene" },
        { "name": "Type", "type": "Edm.String", "searchable": true },
        { "name": "BaseRate", "type": "Edm.Double", "filterable": true, "facetable": true }
      ]
    }
  ]
}

現在我正在嘗試使用以下查詢來搜索City equals New York 的數據，但它們都不起作用

city eq 'new york' // return no result
address/city eq 'new york' // return error The property 'address/city' does not exist
address.city eq 'new york' // return error The property 'address.city' does not exist

那么如何在 Azure 認知搜索中搜索Edm.ComplexType呢？

注意：我正在使用 Azure Do.net SDK (10.1.0)

Answer 1

正確的語法是在$filter子句中定義 OData 表達式。 如果您使用的是 REST API，您的 $filter 子句將是：

Address/City eq 'New York'

您的代碼失敗的原因是因為實際字段路徑是Address/City而您將其指定為address/city 。 使用正確的字段名稱后，您的代碼應該可以正常工作。