Efficient way to look up an item by Id?

Is your feature request related to a problem? Please describe. I’d like to look up an item as efficiently as possible when only the Id of the item is available.

I had assumed that the ReadItemAsync method would support this, but it appears to require a PartitionKey. To be clear, a key is defined in the collection, I just don’t know it at certain times.

Describe the solution you’d like An efficient way of querying a document by Id when the PartitiondKey is unknown

Describe alternatives you’ve considered The best idea I have:

var feedIterator = _container.GetItemQueryIterator<TDataType>($"SELECT TOP 1 * FROM c WHERE c.id = '{documentId}'");
if (feedIterator.HasMoreResults)
{
	var document = await feedIterator.ReadNextAsync();
	return document.FirstOrDefault();
}

Additional context I just feel as though there must be a better way!

[ealsur]

Your code is not draining the query and dealing with empty pages.

public async Task<TDataType> GetById(Guid documentId)
{
	var feedIterator = _container.GetItemQueryIterator<TDataType>($"SELECT TOP 1 * FROM c WHERE c.id = '{documentId}'");
        List<TDataType> results = new List<TDataType>();
	while (feedIterator.HasMoreResults)
	{
		var iterator = await feedIterator.ReadNextAsync();
                results.AddRange(iterator);
	}

	return results.FirstOrDefault();
}

[msftbot[bot]]

Closing due to in-activity, pease feel free to re-open.