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Sorting & filtering with Relational table

Hello,
I’m able to sort and filter in table where I’m retrieving data from normal data type. where all the fields are there. so getting option to sort or filter with that particular field.
(using sort icons and on click on that set state with unique value)
see in below pictures.

but when it comes to relational table , not getting options to sort or filter with child’s fields , which I’m displaying in the table.
see in below pictures.

Table

[ if I choose change which field > and dynamic field name , then app is crashing, getting flickering issue]
Please provide a solution or correct me if I’m using wrong approach.

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