presto-spi/src/main/java/io/prestosql/spi/predicate/AllOrNoneValueSet.java/AllOrNoneValueSet/union
class AllOrNoneValueSet:    @Override
    public ValueSet union(ValueSet other)
    {
        AllOrNoneValueSet otherValueSet = checkCompatibility(other);
        return new AllOrNoneValueSet(type, all || otherValueSet.all);
    }