For example, a federated query might be written in SQL and might specify access to product information.
例如，可以使用SQL编写联合查询，并可以指定对产品信息的访问。
Since the purchase order contains no detailed product information, a separate query is needed to find the product details from the product table.
因为采购订单不包含详细产品信息，所以需要进行单独查询，以便从产品表中查找产品详细信息。
For the realization of information fast query, the reasoning method of 4d product information data based on hypergraph is advanced.
为实现信息的快速查询，提出了基于超图数据结构的产品4d信息数据的推理方法。
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