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
std::vector<char> state(agg_count.sizeOfData());
            AggregateDataPtr place = state.data();
            agg_count.create(place);
            SCOPE_EXIT(agg_count.destroy(place));
            agg_count.set(place, *num_rows);
            auto column = ColumnAggregateFunction::create(func);
            column->insertFrom(place);
            auto header = analysis_result.before_aggregation->getSampleBlock();
            size_t arguments_size = desc.argument_names.size();
            DataTypes argument_types(arguments_size);
            for (size_t j = 0; j < arguments_size; ++j)
                argument_types[j] = header.getByName(desc.argument_names[j]).type;
            Block block_with_count{
                {std::move(column), std::make_shared<DataTypeAggregateFunction>(func, argument_types, desc.parameters), desc.column_name}};
            auto istream = std::make_shared<OneBlockInputStream>(block_with_count);
            auto prepared_count = std::make_unique<ReadFromPreparedSource>(Pipe(std::make_shared<SourceFromInputStream>(istream)), context);
            prepared_count->setStepDescription("Optimized trivial count");
            query_plan.addStep(std::move(prepared_count));
            from_stage = QueryProcessingStage::WithMergeableState;
            analysis_result.first_stage = false;
            return;
        }
    }
    
    ExpressionActionsPtr alias_actions;
    if (storage)
    {
        
        auto row_policy_filter = context->getRowPolicyCondition(table_id.getDatabaseName(), table_id.getTableName(), RowPolicy::SELECT_FILTER);
        if (row_policy_filter)