在Azure Cosmos DB中的嵌套字段上建立索引 [英] Indexing on nested field in Azure Cosmos DB

问题描述

我想在Azure Cosmos DB中的文档中的嵌套字段上创建索引.例如.如果我具有以下架构:

I want to create an index on a nested field in a document in Azure Cosmos DB. E.g. if I have the following schema:

{ 
    'id': 1, 
    'nested': 
        { 
            'mode': 'mode1',
            'text': 'nice text' 
        } 
}

我想在字段nested.mode上创建索引.该怎么办?

I want to create an index on the field nested.mode. How can this be done?

推荐答案

默认情况下，所有路径都在Cosmos DB中建立索引.要仅对"nested.mode"进行索引，您需要在/nested/mode/?路径上使用适当的数据类型/精度指定索引策略. includedPaths部分中的JSON中的类似内容.

By default, all paths are indexed in Cosmos DB. To index just "nested.mode", you need to specify an indexing policy on the /nested/mode/? path with the appropriate data type/precision. Something like this in JSON within the includedPaths section.

     "path":"/nested/mode/?",
     "indexes":[
        {
           "kind":"Range",
           "dataType":"String",
           "precision":-1
        }

此处有更多详细信息: https://docs.microsoft .com/zh-CN/azure/cosmos-db/indexing-policies .

More details here: https://docs.microsoft.com/en-us/azure/cosmos-db/indexing-policies.

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