Summarising groups of rows - distinguish group and overall summaries

public function table(Table $table): Table
{
return $table
->defaultGroup('descr')
->columns([
  TextColumn::make('punti')
    ->summarize(Summarizer::make()
        ->label('Total Points')
        ->using(function ($query) {
            $totalPoints = $query->sum('punti'); // Sum of all points
            $maxPoints = $query->value('punti_max'); // Fetches a single value of punti_max (since it is the same for all records in the same group)                            
            return $maxPoints !== null ? min($totalPoints, $maxPoints) : $totalPoints;
        }))