Query to fetch testcase not in use in test plan folder

Hi All,

In my project there two folders(Testcase and Scenario) in test plan. Test case folder contains all the testcases and Scenario folder contain all the scenario which are linked to testcases in testcase folder.

I need to fetch all the testcases name in testcase folder which are not used in scenario folder using testid of testcases using query

Please help me regarding it.

thanks in advance