驱动表和被驱动表

驱动表:外层循环,若能只进行一次IO把所有数据拿出来最好

被驱动表:里层循环,需要不断的拿外层循环传进来的每条记录去匹配

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原文地址:https://www.cnblogs.com/shiliye/p/10689189.html