Dynamically assign column headers

Link to test case:
Debugger code (debug.datatables.net):
Error messages shown:
Description of problem:
I have a dataset, based on an Oracle query, where column names and counts might change.
Is there a way to create a jQuery datatable based on this changing dataset?
I don't want to manually add/remove/update column headers as query gets updated.

Dataset is result of a query like this:

select metric,
listagg(case when site_name = 'X' then TS end) X,
listagg(case when site_name = 'Y' then TS end) Y
from whatever;

With dataset looking like:

metric    X    Y
blah      1    4

And later it might have an added column:

select metric,
listagg(case when site_name = 'X' then TS end) X,
listagg(case when site_name = 'Y' then TS end) Y,
listagg(case when site_name = 'Z' then TS end) Z
from whatever;

resulting in:

metric    X    Y    Z
blah      1    4    2

I know I can change column header if I know what it is, like:

$(document).ready(function () {
    vat table = $('#example').DataTable()'

    $('#example thead th:eq(0)').html('new column header');
}