nuno-faria opened a new issue, #22916:
URL: https://github.com/apache/datafusion/issues/22916
### Describe the bug
When aliasing a subquery with case sensitive column names, an error is
returned.
### To Reproduce
```sql
> create table t ("A" int);
> select * from (select * from t) t_(x);
Schema error: No field named a. Valid fields are t."A", t."A".
```
### Expected behavior
Execute without error.
### Additional context
_No response_
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