The many complex factors and the dynamic nature of data means that an optimal plan evaluation is often a complex process indeed for any database system.
这么多复杂的因素,再加上数据本身的动态性,使得最佳计划的评估对于任何数据库系统而言通常都是一个复杂的过程。
Hash bailout occurs when a hashing operation reaches its maximum recursion level and shifts to an alternate plan to process the remaining partitioned data.
当哈希操作达到其最大递归级数并转换到替换计划以处理剩余的分区数据时发生哈希释放。
The functional design of the system is divided into designs of main body, manage module, data flaw analysis, and item prophase, plan, process control etc.
系统功能设计分为整体、管理模块、数据流程分析及项目前期、计划、项目过程管理的功能设计。
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