If you don't provide the fields() function in Table widget, the Table will display all data from the query in the dataSource() function.

This can be done, we have an example about this as well. It called Customer board in our demo which we demo a view details button to link to customer profile. Another option is to use Modal to show details right on the current dashboard, there is no need to open another detail dashboard like our example. Which direction do you want to take?