实现从数据库中查询一条记录,然后插入到另一个数据库中:包括图像数据即二进制数据.改进后可实现将任何文件以二进制形式存入数据库-from a database for a record, and then inserted into another database : including image data that is binary data. Improvements can be achieved in any document stored in the database binary form