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.
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。
This column shows how trace-type aspects can supply useful information about the execution of a program.
本月专栏展示了跟踪型的方面如何提供关于程序执行的有用信息。
Note: the associated tables that are created during the execution of rules or column analysis in the analysis database are not moved automatically.
注意：在分析数据库中，规则执行或列分析过程中创建的相关表是不能自动移动的。
You can follow the links in the second column of the table to go to the section that describes in detail the execution of that type of test or function.
可通过表中第二列中的链接，来到达描述测试或函数执行类型细节信息的部分。
In this column, you've seen how AspectWerkz can be used to implement a basic execution trace enhanced with performance metrics.
在本次专栏中，介绍了如何用aspectwerkz实现带性能度量增强的基本执行跟踪。
Test coverage tools modify your code to leave behind a trail of "bread crumbs" during execution (hence the names of the tools I'm targeting in this column).
测试覆盖工具旨在修改代码，使之在执行期间留下一条“面包屑”踪迹（这也是我在这一期关注的工具的名称由来）。
It is not required to have this data on the target system to see the column analysis or rule execution results.
要查看列分析或规则执行在目标系统上不一定要有这些数据。
This can make it difficult to determine what column you are referring to; however, its execution is quite fast. A third option is to use a string and refer to the column by name
这可能使您很难确定在引用哪一列，但是其执行速度相当快。
This can make it difficult to determine what column you are referring to; however, its execution is quite fast. A third option is to use a string and refer to the column by name
这可能使您很难确定在引用哪一列，但是其执行速度相当快。
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