20.10.1.4853

```sql
drop table if exists xp;
drop table if exists xp_d;

create table xp(A Date, B Int64, S String) Engine=MergeTree partition by toYYYYMM(A) order by B;
insert into xp select '2020-01-01', number , '' from numbers(100000);
insert into xp select '2020-10-01', number , '' from numbers(100000);
create table xp_d as xp Engine=Distributed(test_shard_localhost, currentDatabase(), xp);

select count() from xp_d prewhere toYYYYMM(A) global in (select toYYYYMM(min(A)) from xp_d) where B > -1;
┌─count()─┐
│       0 │     <------ expected 100000
└─────────┘

-- global in & both predicates in prewhere 
select count() from xp_d prewhere toYYYYMM(A) global in (select toYYYYMM(min(A)) from xp_d) and B > -1;
┌─count()─┐
│  100000 │
└─────────┘

-- global in & both predicates in where 
select count() from xp_d where toYYYYMM(A) global in (select toYYYYMM(min(A)) from xp_d) and B > -1;
┌─count()─┐
│  100000 │
└─────────┘

-- not global
select count() from xp_d prewhere toYYYYMM(A) in (select toYYYYMM(min(A)) from xp_d) where B > -1;
┌─count()─┐
│  100000 │
└─────────┘



select count() from xp_d prewhere toYYYYMM(A) global in (select 202001) where B > -1;
┌─count()─┐
│       0 │
└─────────┘
```

hmm, it worked in 19.13.7.57
{
            auto initial_required_columns = required_columns;
            ExpressionActionsPtr actions;
            generateFilterActions(actions, row_policy_filter, initial_required_columns);
            auto required_columns_from_filter = actions->getRequiredColumns();
            for (const auto & column : required_columns_from_filter)
            {
                if (required_columns.end() == std::find(required_columns.begin(), required_columns.end(), column))
                    required_columns.push_back(column);
            }
        }
        
        auto alias_columns_required = false;
        const ColumnsDescription & storage_columns = metadata_snapshot->getColumns();
        for (const auto & column_name : required_columns)
        {
            auto column_default = storage_columns.getDefault(column_name);
            if (column_default && column_default->kind == ColumnDefaultKind::Alias)
            {
                alias_columns_required = true;
                break;
            }
        }