**Describe what's wrong**

Query with rollup using same selected field name as the name of underlying column reports structure mismatch

**Does it reproduce on recent release?**

yes

**How to reproduce**

`21.9.2.17`

```sql
CREATE TABLE test
(
    `d` DateTime,
    `a` LowCardinality(String),
    `b` UInt64
)
ENGINE = MergeTree
PARTITION BY toDate(d)
ORDER BY d;

SELECT *
FROM (
    SELECT
        a,
        max((d, b)).2 AS value
    FROM test
    GROUP BY rollup(a)
)
WHERE a <> '';
```

**Expected behavior**

This used to return an ok result on v21.8

**Error message and/or stacktrace**

> Code: 352. DB::Exception: Block structure mismatch in (columns with identical name must have identical structure) stream: different columns:
> notEquals(a, '') LowCardinality(UInt8) ColumnLowCardinality(size = 0, UInt8(size = 0), ColumnUnique(size = 1, UInt8(size = 1)))
> notEquals(a, '') LowCardinality(UInt8) Const(size = 0, ColumnLowCardinality(size = 1, UInt8(size = 1), ColumnUnique(size = 2, UInt8(size = 2)))). (AMBIGUOUS_COLUMN_NAME) (version 21.9.2.17 (official build))



{
    if (table_id.database_name == DatabaseCatalog::SYSTEM_DATABASE)
    {
        static const boost::container::flat_set<String> tables_ignoring_quota{"quotas", "quota_limits", "quota_usage", "quotas_usage", "one"};
        if (tables_ignoring_quota.count(table_id.table_name))
            return true;
    }
    return false;
}
InterpreterSelectQuery::InterpreterSelectQuery(
    const ASTPtr & query_ptr_,
    ContextPtr context_,
    const BlockInputStreamPtr & input_,
    std::optional<Pipe> input_pipe_,
    const StoragePtr & storage_,
    const SelectQueryOptions & options_,
    const Names & required_result_column_names,
    const StorageMetadataPtr & metadata_snapshot_)
    
    : IInterpreterUnionOrSelectQuery(options_.modify_inplace ? query_ptr_ : query_ptr_->clone(), context_, options_)
    , storage(storage_)
    , input(input_)
    , input_pipe(std::move(input_pipe_))
    , log(&Poco::Logger::get("InterpreterSelectQuery"))
    , metadata_snapshot(metadata_snapshot_)
{
    checkStackSize();
    query_info.ignore_projections = options.ignore_projections;
    query_info.is_projection_query = options.is_projection_query;