Filament: Two DB Columns in One Table Column

If you want to combine multiple DB fields into one table column, just create a column for one of those fields and concat the other using the ->formatStateUsing() method.

Tables\Columns\TextColumn::make('user.first_name')
    ->label('Customer Name')
    ->formatStateUsing(function ($state, Order $order) {
        return $order->user->first_name . ' ' . $order->user->last_name;
    }),