```sql
CREATE TABLE t
(
   id Int64, 
   d String,
   p Map(String, String)
   
)
ENGINE = ReplacingMergeTree order by id settings index_granularity  = 0;


insert into t values (1,  's', {'a':'b'});

CH starts eating RAM until it crashes

the same with

insert into t select 1,  's', map('a','b');

```

{
            part_column = ColumnConst::create(std::move(part_column), 1);
            partition_id_column = ColumnConst::create(std::move(partition_id_column), 1);
            part_uuid_column = ColumnConst::create(std::move(part_uuid_column), 1);
            if (has_partition_value)
                partition_value_column = ColumnConst::create(std::move(partition_value_column), 1);
            break;
        }
    }
    block.setColumns(std::move(columns));
    if (!has_partition_value)
        block.erase("_partition_value");
    return block;
}
std::optional<UInt64> MergeTreeData::totalRowsByPartitionPredicateImpl(
    const SelectQueryInfo & query_info, ContextPtr local_context, const DataPartsVector & parts) const
{
    if (parts.empty())
        return 0u;
    auto metadata_snapshot = getInMemoryMetadataPtr();
    ASTPtr expression_ast;
    Block virtual_columns_block = getBlockWithVirtualPartColumns(parts, true );
    
    bool valid = VirtualColumnUtils::prepareFilterBlockWithQuery(query_info.query, local_context, virtual_columns_block, expression_ast);
    PartitionPruner partition_pruner(metadata_snapshot, query_info, local_context, true );
    if (partition_pruner.isUseless() && !valid)
        return {};
    std::unordered_set<String> part_values;
    if (valid && expression_ast)
    {