Can the variables of the data link be operated?

Grafana version: 7.2.1-windows
Datasource: Postgresql-12-windows
Panel: Table

Hi,
I created a data link similar to the image below.It works fine.
image
Now,I want to achieve a function similar to the picture below.The original value of __value.raw is timestamptz.
image
Does Grafana support this kind of operation?
Thanks.