VSCode problemmatcher: Unknown subfolder for file location

I have a problem matcher defined like this:

"fileLocation": ["relative", "${workspaceFolder}"],

And I only know the name of the file and NOT the relative path from my compilation output. Than it only opens files when they are in the root of the workspace.

E.g. Problem matcher searches for: Package.sql But the file is under

• root
  • Other Subfolders
  • PKGs
    • Package.sql

Is there a setting to let the problem matcher "find" that file, even if it's in a (unknown) subfolder? (Assumed all filenames are distinct)