因此，找出统计不准的因素，提出有效的解决方案，防止误差出现，对医院的信息管理尤为重要。
So it is very important to find out the inaccuracy factors, put forward the valid solution, and prevent error occurrence.
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。
Optimization guidelines and statistical views are useful features to compensate the access plan evaluations when exceptions in query performance occur.
本例中，它所提供的统计数据是不准确的，也不是最新的。
In this case, the statistics it provides are not accurate and up to date.
当有关表的统计信息不准确时，可能会造成性能问题。
When statistical information about tables is not accurate, it may cause performance problems.
劳工局的统计数据表明，除了有14%的人像斯科特·尼克尔森一样失业，正在找工作外，还有23%的人甚至不准备就业了。
Apart from the 14 percent who are unemployed and seeking work, as Scott Nicholson is, 23 percent are not even seeking a job, according to data from the Bureau of Labor Statistics.
不充分或不准确的统计数据会导致对候选访问路径评估不准确，这也是选择低效访问路径的最常见原因。
Insufficient or inaccurate statistics lead to inaccurate cost estimates for the candidate access paths and is the most common reason for the selection of inefficient access paths.
统计数据丢失：当统计数据丢失后，优化器假设一个默认值来确定成本，这非常不准。
Missing statistics: When statistics are missing, the optimizer assumes the default values to determine costs, which could be completely inaccurate.
如果编目统计数据不准确，应该使用RUNSTATS更新它们。
If the catalog statistics are inaccurate, get them up to date with RUNSTATS.
不使用统计视图-在这种情况下，对于数据的基数的估计明显不准确。
No statistical view - Here the cardinality based on the data is off significantly.
因此，如果统计数据不准确或者过期，或者冲突，优化器会对查询计划中各步骤的成本评估不准确，从而导致糟糕的性能。
Consequently, if the statistics are inaccurate, outdated, or conflicting, the optimizer will create inaccurate estimates for the costs of the steps in a query plan, leading to poor performance.
如果无法获得当前的统计数据，优化器就可能会基于不准确的默认统计数据选择低效的访问计划。
If current statistics are not available, the optimizer may choose an inefficient access plan based on inaccurate default statistics.
在变更管理过程中，数据库包可能不可用，并且统计信息也有可能不准确。
During the change management process, database packages might become inoperative and statistics might become inaccurate.
求职信息网站Job-Hunt.org发行人苏珊•乔伊斯认为：“这类‘竞争情况报告’对薪酬水平的统计可能并不准确，也没有特别的相关性。”
"What 'the competition' states as their salary level may not be accurate and probably isn't particularly relevant, " says Susan Joyce, publisher of career information site Job-Hunt.org.
随着社会的不断进步，为了摆脱以往医院管理工作繁重、手工记帐不准确、财务统计不及时的混乱局面。
Along with society's unceasing progress, in order to get rid of the former hospital supervisory work arduous, manual keeping accounts inaccurate, the financial statistics not prompt chaos.
应用自适应滤波解决了实际中噪声统计特性不准确或未知的问题，提高了导航精度。
The adaptive filter is applied to the system in order to solve the question of inaccuracy or unknown noise statistics and to make navigation accuracy increase.
应用自适应滤波解决了实际中噪声统计特性不准确或未知的问题，提高了导航精度。
The adaptive filter is applied to the system in order to solve the question of inaccuracy or unknown noise statistics and to make navigation accuracy increase.
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