
**Describe the bug**
[A link to the report](https://s3.amazonaws.com/clickhouse-test-reports/32291/2f43445a34c91beb1104422308ba5abfdf7be5bb/fuzzer_astfuzzertsan,actions//report.html)

**How to reproduce**

```SQL
CREATE TABLE t1 (`id` Int32, `key` String, `key2` String) ENGINE = TinyLog;
CREATE TABLE t2 (`id` Int32, `key` String, `key2` String) ENGINE = TinyLog;
SELECT (t1.id = t2.id) AND (t2.key = t2.key2) AND ((t1.id = t2.id) AND (t2.key = t2.key2) AND (t1.key = t1.key2) AND (t2.key2 = NULL)) AND (t1.key = t1.key2) AND (t2.key2 = NULL), NULL FROM t1 ANY INNER JOIN t2 ON (t1.key = t1
.key2) AND (NULL = t1.key) AND (t2.key = t2.key2) AND ((NULL = t1.key) = t2.id) AND (('' = t1.key) = t2.id) AND (t2.key2 = NULL);
```

{
    if (!column.column)
    {
        column.type = convertTypeToNullable(column.type);
        return;
    }
    ColumnPtr nullable_column = tryConvertColumnToNullable(column.column);
    if (nullable_column)
    {
        column.type = convertTypeToNullable(column.type);
        column.column = std::move(nullable_column);
    }
}
void convertColumnsToNullable(Block & block, size_t starting_pos)
{
    for (size_t i = starting_pos; i < block.columns(); ++i)
        convertColumnToNullable(block.getByPosition(i));
}
void convertColumnsToNullable(MutableColumns & mutable_columns, size_t starting_pos)
{
    for (size_t i = starting_pos; i < mutable_columns.size(); ++i)
    {
        ColumnPtr column = std::move(mutable_columns[i]);
        column = makeNullable(column);
        mutable_columns[i] = IColumn::mutate(std::move(column));
    }
}
void removeColumnNullability(ColumnWithTypeAndName & column)