**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))



{
public:
    friend struct ExpressionAnalysisResult;
    SelectQueryExpressionAnalyzer(
        const ASTPtr & query_,
        const TreeRewriterResultPtr & syntax_analyzer_result_,
        ContextPtr context_,
        const StorageMetadataPtr & metadata_snapshot_,
        const NameSet & required_result_columns_ = {},
        bool do_global_ = false,
        const SelectQueryOptions & options_ = {},
        SubqueriesForSets subqueries_for_sets_ = {},
        PreparedSets prepared_sets_ = {})
        : ExpressionAnalyzer(
            query_,
            syntax_analyzer_result_,
            context_,
            options_.subquery_depth,
            do_global_,
            std::move(subqueries_for_sets_),
            std::move(prepared_sets_))
        , metadata_snapshot(metadata_snapshot_)
        , required_result_columns(required_result_columns_)
        , query_options(options_)
    {
    }
    
    bool hasAggregation() const { return has_aggregation; }