```
create table default.test_parent
(
    id        UInt64,
    parent_id Nullable(UInt64)
) engine = MergeTree

create dictionary default.d4test_parent
    ( id UInt64,
    parent_id  Nullable(UInt64) HIERARCHICAL
    )
    PRIMARY KEY id
    SOURCE (CLICKHOUSE(DB 'default' TABLE 'test_parent'))
    LIFETIME (MIN 0 MAX 0)
    LAYOUT (HASHED)
;
insert into default.test_parent
values (1, null),
       (2, 3),
       (3, 1),
       (4, 2)
;
system reload dictionary default.d4test_parent
;
select dictGetDescendants('default.d4test_parent', toUInt64(2))
;
```

Code: 53. DB::Exception: default.d4test_parent (443f6664-e217-44ec-80e2-bbec982b4963): type mismatch: column has wrong type expected UInt64: While processing dictGetDescendants('default.d4test_parent', 2). (TYPE_MISMATCH) (version 22.3.2.1)


On old versions no errors
```
select version()
-- 21.11.6.7
;
select dictGetDescendants('default.d4test_parent', toUInt64(2))
-- [4]
```
{
        auto pipeline(source_ptr->loadUpdatedAll());
        mergeBlockWithPipe<DictionaryKeyType::Simple>(
            dict_struct.getKeysSize(),
            *update_field_loaded_block,
            std::move(pipeline));
    }
    if (update_field_loaded_block)
        blockToAttributes(*update_field_loaded_block.get());
}
void FlatDictionary::loadData()
{
    if (!source_ptr->hasUpdateField())
    {
        QueryPipeline pipeline(source_ptr->loadAll());
        PullingPipelineExecutor executor(pipeline);
        Block block;
        while (executor.pull(block))
            blockToAttributes(block);
    }
    else
        updateData();
    element_count = 0;
    size_t loaded_keys_size = loaded_keys.size();
    for (size_t i = 0; i < loaded_keys_size; ++i)
        element_count += loaded_keys[i];
    if (configuration.require_nonempty && 0 == element_count)
        throw Exception(ErrorCodes::DICTIONARY_IS_EMPTY, "{}: dictionary source is empty and 'require_nonempty' property is set.", getFullName());
}
void FlatDictionary::buildHierarchyParentToChildIndexIfNeeded()