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- It estimates the execution cost based on an internal cost model. 它会根据内部成本模型来预计执行成本。
- For each query, the query optimizer compares the execution cost of many alternative execution plans. 对于每个查询,查询优化程序将比较多个不同执行计划的执行成本。
- The serial execution cost of the query is not high enough to consider an alternative, parallel execution plan. 查询的串行执行成本并不过高,无需考虑替代的并行执行计划。
- Automatically determines the column order in recommended indexes based on query execution cost. 基于查询执行开销,按照建议的索引自动确定列的顺序。
- The composition of the executive cost in China is irrational and the reasons are manifold. 我国行政成本运作中存在著一定的问题，原因是多方面的。
- At present my province executes cost of highway construction, conserve, management, plan to collect " quaternity " highway management system. 按照“条块结合，以块为主”的方针，各市公路治理处、各县（市）公路治理站由地方交通局直接领导，是地方政府负责公路建设、养护、治理、规费征收的职能部门，并接受省公路局的业务指导。
- He is hardly capable of executing such a difficult task. 他仅能勉强地完成这样艰巨的任务。
- She reckoned she had cut her cost by half. 她估计她减少了一半的费用。
- She skirted round the problem of the high cost. 她避而不谈巨额费用问题。
- The cost of travel to the far east is prohibitive. 到远东旅游的费用高的令人不敢问津。
- In point of cost, we'll have to discuss it at the next meeting. 至于费用方面，我们只好留到下次会议再讨论。
- His parents balk at the cost of the guitar he want. 他想要那个吉他，但他父母看到吉他的价格却踌躇不决。
- He put the telephone bill down as a business cost. 他把电话费用作为办公费记下。
- My new car cost me a cool thousand pounds. 我的新车整整花了我1000镑。
- How much did it cost you to study abroad? 你出国深造花了多少钱？
- When a non-redundant set of possible join combinations has been generated, the optimizer selects the plan that appears to have the lowest execution costs. 当生成了非冗余的可能连接组合集时,优化器就选择看上去具有最低执行成本的计划。
- A good video camera will cost you a pretty penny. 一台好的摄像机要花掉你很多钱。
- A year in America will cost you no end of money. 在美国住一年要花很多的钱。
- He is determined to stay in the saddle at all cost. 他打定主意要不惜一切代价继续掌权。
- It will be to his cost if he bets on that horse. 如果他赌在那匹马上，他可就要吃亏了。
