TextColumn relationship unique values

[celest comet]

I have a text column that contains country names through a relationship. How do I get this to only display unique names?

Tables\Columns\TextColumn::make('countries.name'),

[peak cypress]

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[prime violet]

I am not sure I follow? If it is a relationship it will show what's in the relationship. The countries should only have unique names within it?

[celest comet]

To clarify, countries is a has many through (cities) relationship. So if a title has two USA cities, USA is showing up twice in the countries column.