delete query

基本解释

If there is not a delete query argument, then it will return None.
如果其中没有“delete”查询参数，那么处理程序返回 None。
Include and instantiate the posts model, create a where clause and run a standard delete query.
包括并实例化 posts 模型，创建 where 子句并运行标准的 delete 查询。
Instead, you would need to create another preparedStatement for the delete, and another message would be sent to the database server to prepare the statement for the delete query.
而是需要另外创建一个 preparedStatement 来执行删除操作，且另外会有一条消息被发送到数据库服务器来准备删除查询语句。