Bulk Read questions

[mattwill09]

Is there any consideration for being able to do a BulkRead on a non-unique column? The use case I have is that I have a parent table that has thousands of rows that match my criteria and I need to get all of the child rows for those parents. Right now the only way that I can do that is to get all of the parent rows and then get a list of their ids and then do a query like this

var attributeValues = await _dbContext.AttributeValue
    .Where(av => attributeIds.Contains(av.AttributeId))
    .ToArray();

Being able to get all of these children rows in a BulkRead I am sure would be much more efficient.