Once you have selected al the variables using the filter transformation then select a seconb transformation called ORGANISE FIELDS BY NAME and you may rename and reoder them as required.
I do not think you can rename fields directly inside the filter by name transformation. i would suggest a simpler approach is to add an Organize fields transformation after it where you can rename the displayed field names.
Yes, that’s accurate for Grafana’s transformations:
Filter by name → only includes/excludes fields by name or regex. No rename capability.
Organize fields by name → lets you hide/show fields, drag to reorder them, and rename each field’s display label via an editable text box next to it.
Here’s the transformation setup with the rename fields:
And the resulting table with renamed columns:
