优化程序

[yōu huà chéng xù]

汉英

网络释义

例句

释义:
全部全部,optimizeroptimizer,optimization programoptimization program,CBOCBO,HPOHPO
类别:全部全部,口语口语,书面语书面语,标题标题,技术技术
来源:全部全部,字典字典,网络网络
难度:全部全部,简单简单,中等中等,难难
1.
Ideally, the optimizer would identify the most efficient access plan possible, but this goal is often impractical.
在理想情况下，优化程序将尽可能地找出最为高效的访问计划，但这一目标通常是不切实际的。
www.ianywhere.com
2.
Note, however, that the optimizer is often unable to precisely estimate a query's cost, so expect there to be differences.
但是，请注意，优化程序通常无法精确地预计查询的成本，因此应该会存在差异。
www.ianywhere.com
3.
You can use the REWRITE function without the ANSI argument to help understand how the optimizer generated the access plan for a given query.
使用REWRITE函数时可以不带ANSI参数，这样可以帮助理解优化程序是如何生成给定查询的访问计划的。
www.ianywhere.com
4.
The optimizer uses MAGIC values as a last resort when it is unable to accurately predict the selectivity of a predicate .
当优化程序不能准确判定一个谓词的选择性时，它的最后一个手段就是利用MAGIC值。
275008742.xyz
5.
Really well optimized programs might be able to double or even quadruple that number.
很好的优化程序可以翻一番甚至翻两番，这个数字。
blog.sina.com.cn
6.
The system uses materials selection charts which are a way of displaying material property data through the use of optimization procedures.
该系统使用材料的选择图表，这是一种显示，通过优化程序使用材料性能数据的方法。
www.doc88.com
7.
In the case of very expensive queries , it may run long enough to cause a discernible delay .
如果查询占用非常多的资源，则优化程序可能会运行很长的时间，从而导致出现明显的延迟。
275008742.xyz
8.
An estimate source of Guess indicates that the optimizer has no selectivity information to use .
如果查询被确定为是简单查询，则不会显示选择性统计信息，这样将绕过优化程序。
275008742.xyz
9.
This command updates the statistics in the system catalogs that the optimizer uses to determine the lowest-cost query plan.
此命令更新了系统目录中的统计数据，优化程序使用这些数据来确定成本最低的查询计划。
www.ibm.com
10.
Ordering allows you to optimize your program's paging behavior through swap tuning by grouping a function with the functions it calls.
排序允许将一个函数与该函数调用的函数组合，通过交换优化来优化程序的分页行为。
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