[optimize] In a minor issue, the values of max and min are reversed

[lixiaobaivv]

• The SQL query is reversed from the actual value；

[LinuxSuRen]

I'm wondering if it's possible to add new unit tests to cover those cases. And thanks for your time.

[yuluo-yx]

I'm wondering if it's possible to add new unit tests to cover those cases. And thanks for your time.

+1, good idea.

[lixiaobaivv]

我想知道是否可以添加新的单元测试来涵盖这些情况。谢谢您的宝贵时间。

+1，好主意。

Sorry, this is my first time submitting a PR. If there is anything wrong, I will improve it. Here is a screenshot of my unit test passing!

[LinuxSuRen]

You can add some new unit tests to make sure your changes are correct. We do this because there are no testers to test the new changes.

Of course, this is only my personal suggestion. The maintainers might make the merge decision.

[lixiaobaivv]

您可以添加一些新的单元测试来确保您的更改正确无误。我们这样做是因为没有测试人员来测试新的更改。

当然，这只是我的个人建议。维护者可能会做出合并决定。

Hello, when I was writing unit tests, I found that there was already a reusable test method. I tested the getMetricHistoryData method under the MetricsDataControllerTest class and it passed.