The following examples are demonstrative of optimization profiles usage in 3 categories, namely, general optimization, query rewrite, and plan optimization.
下面的例子演示了优化概要文件在3类情况下的使用，即常规优化、查询重写和计划优化。
The optimizer considers star join optimization when appropriate and decides on star join plan based on cost considerations in order to come up with best execution plan for a star join query.
为了实现星型连接查询的最佳执行计划，优化器在适当的时候会考虑星型连接优化，并根据成本因素来决定星型连接计划。
For the exceptional situations where the optimizer cannot choose an optimal query execution plan, DB2 has added features such as the SELECTIVITY clause and optimization guidelines.
对于优化器不能选择最佳查询执行计划的例外情况，DB 2已经增加了诸如selectivity子句和优化指南之类的特性。
Optimization guidelines and statistical views are useful features to compensate the access plan evaluations when exceptions in query performance occur.
当查询性能中出现例外情况时，优化指南和统计视图特性对于弥补访问计划估计的不准确性非常有用。
Better UNION handling in the compile and optimization phase of the access plan.
在访问计划的编译和优化阶段提供更好的UNION处理。
Based on the analysis for running performance and logs of the infrastructure system, to solve the issue in daily use and to develop the optimization plan and to implement.
通过对基础信息系统的运行性能及运行日志的分析，解决日常使用中发生的问题并制定基础信息系统的优化方案并实施。
This method can guarantee the generation of optimization execution plan and costs a little.
该方法开销小，且能产生优化的执行规划。
In plan optimization module, the access path selection and the account method of cost evaluation are discussed in detail.
在计划优化模块中，详细讨论了存取路径的选择和代价评估的计算方法。
Indicated after the rich Xin group nearly 1 year actual utilization that, the company governed the structure optimization plan to achieve the anticipated effect was practical and feasible.
经过富鑫集团近1年的实际运用表明，公司治理结构优化方案达到了预期的效果，是切实可行的。
The essay deals with it focusing on the optimization of the establishment of logistics center and the transportation plan.
本文从物流中心设置及配送方案着手，提出了相关的优化方法以期解决这一问题。
Vertical swinging of transformer and other high & low voltage switch boxes should be carried out simultaneously. Have further argument and optimization of hoisting plan before hoisting.
变压器的垂直吊运与同变电室的其他高、低压配电柜同期进行，吊装前对吊装方案进一步论证和优化。
According to the construction cost plan, cost program evaluation and time-cost optimization are used to control the project cost.
根据施工项目的成本计划，运用成本计划评审法和时间成本优化法对项目成本进行控制。
The GERT network can solve not only the project time optimization problem in making bridge construction plan, but also the cost optimization in the limit of proper project time and resource.
随机网络不仅可以解决桥梁施工计划的工期优化问题，而且在合理工期和限定资源条件下，可进行施工成本优化。
The practice proves that both models can play very important role in the optimization of the production plan and enhance the yield of steel products and slab quality.
实践证明，两种控制模型对保证铸坯产品的计划优化、提高钢材收得率及提高铸坯产品质量等均起到很大的作用。
Generally speaking, the rationality of landscape pattern decreased. It needs optimization plan and construction.
总体来看景观格局的科学合理性下降，需要进行优化规划和建设。
Query optimization is the main problem of query processing research, thus in particular discusses cost estimated, query plan, search Spaces and so on related problems.
查询优化是查询处理研究的一个主要问题，为此着重分析研究了查询优化所涉及的代价估计、查询规划和搜索空间等相关问题。
On this foundation, essential sizes of the mill and the optimization plan in order to save production cost.
在此基础上，为节约生产成本，对球磨机的关键尺寸进行优化，得出了优化方案。
The plan carrying on the fuzzy reliability optimization design to the spur gear drive will be more economical, reasonable and suitable.
对直齿圆柱齿轮传动进行模糊可靠性优化设计，设计出的方案更经济、合理、适用。
The major research of this paper includes: (1) Establish departure plan optimization model for regional networks of public transport and use appropriate solving method.
本文的主要研究成果包括：(1)建立适于区域网络的公交发车计划优化模型，并采用合适的方法求解。
It is emphasized that the query plan of object-oriented graphic database, query controller structure of graphic database, language specification of GDQL and query optimization.
介绍了面向对象图形数据库的一般查询方法、图形数据库的查询处理器结构、GDQL的语言描述以及查询优化等内容。
By solving the model, the optimization sequence of inspection plan is gained and the influence of correlative parameter in the quality cost model is also analyzed.
通过对模型的求解，得到工序检验方式的最优化序列，并进一步分析模型中相关参数对决策序列的影响。
Wireless network, as an important part of network plan and optimization, has been asked for more and more.
无线网络作为网络规划和优化的重要组成部分，对其则提出了更高的要求。
On the whole, the results of this research could solve the regional public transport departure plan optimization, providing constructive comments for improve transit operation and service.
综合来看，本文的研究成果较好的解决了区域公交发车计划优化问题，为公交运营管理和服务水平的改善提出了建设性意见。
The plan of operation optimization is also presented based on the first time operation and the assessment to it.
针对装置的第一次运行及达标考核，提出操作优化打算。
Part VI proposes the measures of the traffic organization optimization: proposes the specific measures from the three aspects of politics and management and plan to promote the optimization.
第六部分提出长春市交通空间组织优化的措施：从政策、管理以及规划三个角度提出具体措施，促进交通空间组织优化。
It is pointed out that an exact and rational result can be obtained by joint optimization of car flow routing and marshalling plan.
车流径路和编组方案统一起来进行优化，会得到更加精确和合理的结果。
It is pointed out that an exact and rational result can be obtained by joint optimization of car flow routing and marshalling plan.
车流径路和编组方案统一起来进行优化，会得到更加精确和合理的结果。
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