During plan generation for the query, the query optimizer communicates with the non-relational wrapper.
在为查询生成计划的过程中，查询优化器与非关系包装器通信。
Since the queries are dynamic, with unknown selection criteria at compile time, plan generation can be incorrect, even with the availability of full distribution statistics on the data.
由于查询是动态的，在编译时并不知道其选择标准，因此，即使有了关于数据的完整的分布统计，仍然可能生成错误的计划。
For the economical dispatch scheme, it proposes the load prediction, power supply plan, generation dispatching plan, dispatching execution, assessment and account settling method.
提出了实施经济调度方案中的负荷预计和供电计划、发电调度计划、调度的执行、考核与结算的方法。
For the economical dispatch scheme, it proposes the load prediction, power supply plan, generation dispatching plan, dispatching execution, assessment and account settling method.
提出了实施经济调度方案中的负荷预计和供电计划、发电调度计划、调度的执行、考核与结算的方法。
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