DocumentDb:没有索引的查询

DocumentDb: Querying without an index

在排除所有路径建立索引的情况下,为什么我仍然能够对ID以外的字段执行成功的查询?

排除所有路径:

collection.IndexingPolicy.ExcludedPaths.Add(new ExcludedPath()
    {
        Path = "/*"
    });

查询:

SELECT * FROM c where c.Key = "117dfd49-a71d-413b-a9b1-841e88db06e8"

因此this MSDN article

When indexing is turned off, documents can be accessed only through their self-links or by queries using ID.

编辑:

在查看索引策略时,我发现我的路径没有被排除在外:

{
  "indexingMode": "consistent",
  "automatic": true,
  "includedPaths": [
    {
      "path": "/*",
      "indexes": [
        {
          "kind": "Range",
          "dataType": "Number",
          "precision": -1
        },
        {
          "kind": "Hash",
          "dataType": "String",
          "precision": 3
        }
      ]
    },
    {
      "path": "/\"_ts\"/?",
      "indexes": [
        {
          "kind": "Range",
          "dataType": "Number",
          "precision": -1
        },
        {
          "kind": "Hash",
          "dataType": "String",
          "precision": 3
        }
      ]
    }
  ],
  "excludedPaths": []
}

我做错了什么?

我使用的是一致性索引,所以如果我理解正确的话,这肯定不是索引传播的最终一致性问题?

这是全部代码:

var collectionSpec = new DocumentCollection { Id = collectionId };
var requestOptions = new RequestOptions { OfferType = "S1" };

collection = Client.CreateDocumentCollectionAsync(databaseLink, collectionSpec, requestOptions).Result;

collection.IndexingPolicy.IndexingMode = IndexingMode.Consistent;
collection.IndexingPolicy.ExcludedPaths.Add(new ExcludedPath()
    {
        Path = "/*"
    });

设置新索引策略后,我没有看到任何替换文档集合的调用。

您需要调用 Client.ReplaceDocumentCollectionAsync() 以使您的索引策略更改生效。

方法文档是here

这里是DocumentDB团队写的an article关于在线更新索引策略(指的是需要调用ReplaceDocumentCollectionAsync())。

您需要更改代码片段以定义集合规范的索引策略 priorclient.CreateDocumentCollectionAsync() - 以便它包含在网络请求中为 DocumentDB 创建一个集合。

在创建集合时设置自定义索引策略

var collection = new DocumentCollection { Id = "myCollection" };

collection.IndexingPolicy.IndexingMode = IndexingMode.Consistent;

collection.IndexingPolicy.IncludedPaths.Add(
    new IncludedPath { 
        Path = "/*", 
        Indexes = new Collection<Index> { 
            new RangeIndex(DataType.String) { Precision = -1 }, 
            new RangeIndex(DataType.Number) { Precision = -1 }
        }
    });

await client.CreateDocumentCollectionAsync(database.SelfLink, collection);

更新现有集合的索引政策

As - 您还可以使用 Client.ReplaceDocumentCollectionAsync().

更新现有集合的索引策略