PATHCONTAINS Function (DAX)
Returns TRUE if the specified item exists within the specified path.
If item is an integer number it is converted to text and then the function is evaluated. If conversion fails then the function returns an error.
This DAX function is not supported for use in DirectQuery mode. For more information about limitations in DirectQuery models, see http://go.microsoft.com/fwlink/?LinkId=219172.
The following example creates a calculated column that takes a manager ID and checks a set of employees. If the manager ID is among the list of managers returned by the PATH function, the PATHCONTAINS function returns true; otherwise it returns false.
=PATHCONTAINS(PATH(Employee[EmployeeKey], Employee[ParentEmployeeKey]), "23")