与计数函数类似,当在一个规则中使用多个具有分组关键字的聚合,对分组与计数操作必须进行级联,如图14所示。
Like the counting function, when several aggregations with grouping keys are used in a rule, the group and count operations must be cascaded as shown in figure 14.
但是,如果使用具有相同分组关键字的多个聚合,或者对相同列进行计数的计数函数,其不会显著增加规则的执行时间。
But if you use multiple aggregations with the same grouping keys, or multiple counting functions that count the same column, it will not significantly increase the execution time of the rule.
影响任务复杂性的相关要素是不同分组关键字的数量,而不是在计数函数中所看到的,不同的所聚合列的数量。
The relevant factor that impacts the complexity of the job is the number of different grouping keys, not the number of different aggregated columns that you would see in counting functions.
只对每个位置的邻居总数感兴趣,不需要详细的邻居列表,所以对每个位置的结果进行分组,并只要求计数。
You're only interested in the total number of neighbors for each location, not the detailed list of neighbors, so group the results for each location and only ask for a count.
例如,Web访问统计信息(按当前所编辑的)只不过是以各种方式进行分组的频率计数。
For example, Web-access statistics (as currently compiled) are little more than frequency counts grouped in various ways.
如果希望查明哪个组件的缺陷比较多,只需按照组件名称对所有缺陷进行分组并统计数量。
If you want to figure out which component has more defects, you can simply group all the defects by the component name and do a count.
返回给DB2的中间结果中包含着常用的计数器(DB 2max函数需要),以及当前分组到目前为止计算出来的实际加权平均数。
The intermediate result that is returned to DB2 contains the usual counter (needed for the DB2 MAX function) and the actual weighted average that we have so far for the current group.
这个二进制串由常用的计数器(DB 2max函数进行实际聚集计算时需要)、聚集对象的标识以及分组标识构成。
This binary string is comprised of the usual counter, which is needed for the DB2 MAX function to do the actual aggregation, the identifier for the aggregate object, and the group identifier.
借助EurekaJ管理程序,我们可以在一张图上分组显示多个统计数据、可以定义阈值和给接收者发出警报。
With EurekaJ Manger, it is possible to group multiple statistics into a single chart, to define thresholds, and email alert receivers.
RecipeJAUS信息包序列由6个部分组织成,每个部分前面都是一个字节计数器。
The RecipeJAUS packet sequence consists of 6 sections, each preceded by a byte count for each of the sections. The sections are.
为保证报告内容的翔实、准确、可靠及数据之间的可比性,报告对统计数据进行了必要的筛选、分组,并将宏观、微观数据紧密结合。
To ensure accurate reporting of content, accurate, reliable and the comparability between data, report to the statistical data of the necessary screening, grouping, and macro and micro data.
对生产过程中的成品进行计数和分组控制常常是十分重要的。
It is very important to control the counting and division for the product in manufacturing procession.
下列程序码范例会根据客户的位置(国家)将客户的清单进行分组,并提供每个群组中的客户计数。
The following code example groups a list of customers based on their location (country) and provides a count of the customers in each group.
KCBC或KCTR MAC认证模式和CTR(计数器)加密模式结合可构成分组密码算法的新工作模式。
The KCBC or KCTR-MAC authentication mode may be combined with the CTR(counter) encryption mode to form a new full block cipher mode.
该微机系统由四个部分组成:计数;
本文讨论了分组交换网中路由选择算法与全局可计数分散式自适应流量控制相互作用对网路性能指标和稳定性的影响。
In this paper we studied effects of interactions between routing and global Isarithmic adaptive flow control algorithms on the performance and stability in packet-switching networks.
电子计数器可控制成品的分组,以便于装箱。
Electronic counter may control finished products by group for easy use of package.
电子计数器可控制成品的分组,以便于装箱。
Electronic counter may control finished products by group for easy use of package.
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