我正在尝试获取容器中使用的所有不同类别值,其中类别是字符串数组。
查看 Cosmos DB SQL 文档,我构建了以下查询,当我执行 SQL 时,该查询在模拟器中运行,并按预期返回不同类别的数组。
SELECT DISTINCT * FROM c IN s.categories
结果
[
"Running",
"Rugby",
"Icon"
]
但是,如果我通过 Cosmos .NET SDK 使用相同的查询,则会收到错误
"Identifier 'session' could not be resolved."
为什么此查询可以在模拟器中运行,但不能通过 SDK 运行?是我做错了什么还是 SDK 的问题?
示例数据:
{
"name": "Sample Entity",
"description": "<p></p>",
"startDateUtc": "2020-07-13T19:10:00Z",
"endDateUtc": "2020-07-13T20:00:00Z",
"categories": [
"Running",
"Icon"
],
"id": "h3foyhfk0a3betj1",
"dateCreated": "2020-07-15T06:33:57.9406583Z",
"lastUpdated": "2020-08-13T17:04:18.6182079Z" }
SDK代码:
var query = new QueryDefinition("SELECT DISTINCT * FROM c IN s.categories");
var results = new List<TEntity>();
var resultSetIterator = _container.GetItemQueryIterator<TEntity>(query, requestOptions: new QueryRequestOptions() { PartitionKey = new PartitionKey(partitionKey) });
while (resultSetIterator.HasMoreResults)
{
var response = await resultSetIterator.ReadNextAsync();
results.AddRange(response);
if (response.Diagnostics != null)
{
_logger.LogTrace($"\nQueryWithSqlParameters Diagnostics: {response.Diagnostics}");
}
}
return results;
最佳答案
删除 , requestOptions: new QueryRequestOptions() { PartitionKey = new PartitionKey(partitionKey)
。
然后你就会得到结果。使用时requestOptions
可能有错误。
var query = new QueryDefinition("SELECT DISTINCT * FROM c IN s.categories");
var results = new List<dynamic>();
var resultSetIterator = container.GetItemQueryIterator<dynamic>(query);
while (resultSetIterator.HasMoreResults)
{
var response = await resultSetIterator.ReadNextAsync();
results.AddRange(response);
if (response.Diagnostics != null)
{
Console.WriteLine($"\nQueryWithSqlParameters Diagnostics: {response.Diagnostics}");
}
}
关于azure-cosmosdb - Cosmos DB 数组查询在 .NET SDK 中不起作用,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/63402515/