该示例应用程序仅显示一个级别的文件夹，即仅显示指定路径的直接子文件夹。
The sample application displays only one level of folders, that is, only direct children for the specified path are displayed.
虽然相同sql语句的不同访问路径会产生相同的结果集，但是它们很有可能不会通过同样的性能级别来执行任务。
Although different access paths for the same SQL statement produce the same result set, they most likely do not perform the task with the same level of performance.
可单击每一个包，获得类级别的行百分比和路径百分比，甚至能看到执行的源代码行和它们执行的次数。
You can click on each package to get class level line and path percentages and even see which source code lines were executed and how many times they was run.
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