DB 2优化器是一款高度复杂的基于成本的优化器。
The DB2 optimizer is a highly sophisticated cost-based optimizer.
将该组索引输入到基于成本的优化器，这个优化器决定是否使用任何合适的索引。
This set is input to the cost-based optimizer that decides whether to use any of the eligible indexes or not.
该代数由基于成本的优化器使用，该优化器能够自由混合使用常规运算符以及与压缩有关的运算符。
This algebra is exploited by a cost-based optimizer that can freely mix regular and compression-aware operators.
IBM并没有发布优化器如何确定最佳存取路径的真正和深入的详细信息，但优化器是一个基于成本的优化器。
IBM does not publish the actual, in-depth details of how the optimizer determines the best access path, but the optimizer is a cost-based optimizer.
WebSphereFederationServer使用它的基于成本的优化器，确定检索和处理数据的最佳路径。
WebSphere Federation Server USES its cost based optimizer in order to determine the optimal access path to retrieve and process the data.
FederationServer的一个独特的特性是，它使用DB2强大的基于成本的优化器技术来发现联邦查询的最佳访问路径。
One of the distinguishing features of Federation Server is that it uses the powerful technology of DB2's cost-based optimizer to find the best access path for federated queries.
如果未指定该属性，优化器将生成一个基于成本的决策，为给定的表选择一种访问计划。
When this attribute is not specified, the optimizer makes a cost-based decision to select an access plan for the given table.
准确的索引信息和统计信息是查询优化器中基于成本的决策的基础。
Accurate index information and statistics are fundamental to cost-based decisions in the query optimizer.
优化器将以一种基于成本的方式为IXAND计划挑选额外的索引。
The optimizer picks additional indexes for the IXAND plan in a cost-based fashion.
优化器将通过基于成本的决策返回最佳计划。
The optimizer will return the best plan using a cost-based decision.
优化器可能会以一种基于成本的方式将更多索引加入到 IXAND计划中。
The optimizer may add more indexes to the IXAND plan in a cost-based fashion.
DB 2 UDb中包含了一个功能强大基于成本的查询优化器，用于确定访问数据的最佳策略。
DB2 UDB comes with a powerful cost-based query optimizer that determines the best strategy to access data.
优化器将通过基于成本的分析来在这两个访问方法之间进行选择。
The optimizer chooses between the two access methods using a cost-based analysis.
优化器可能会通过基于成本的分析选择XISCAN、IXAND、XANDOR或RIDSCN计划。
The optimizer may pick an XISCAN, IXAND, XANDOR, or RIDSCN plan using cost-based analysis.
优化器可能会通过基于成本的分析选择XISCAN、IXAND、XANDOR或RIDSCN计划。
The optimizer may pick an XISCAN, IXAND, XANDOR, or RIDSCN plan using cost-based analysis.
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