问题描述
请考虑下表：
Table (documentId : Hash Key, userId: Range Key)
如何编写代码以删除所有具有相同 documentId ，最好不要检索这些项目。
How can I write a code to delete all the items having the same documentId and preferably without retrieving the items.
推荐答案
当前，您不能仅通过传递哈希键来删除所有项目，即删除一个需要散列+范围的项目，因为这就是它的独特之处。
Currently, You cannot delete all the items just by passing the Hash key, to delete an item it requires Hash + Range because that's what makes it unique.
You have to know both your (hash + range) to delete the item.
编辑：这是DynamoDB文档 http://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_DeleteItem.html#API_DeleteItem_RequestSyntax >
Here is the reference link from DynamoDB documentation http://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_DeleteItem.html#API_DeleteItem_RequestSyntax
请阅读 KEY的说明，该说明明确指出我们必须同时传递Hash（分区键）和Range（排序键）才能删除该项目。
Please read the explanation of the "KEY" which clearly says that we must pass both Hash (Partition Key) and Range (Sort Key) to delete the item.
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