atahanyorganci commented on PR #16023:
URL: https://github.com/apache/datafusion/pull/16023#issuecomment-2916493090
Current implementation fails in call to `assert_valid_optimization` where
schema of a optimization pass is compared against the previous state. Failure
occurs when alias is replaced with an other. For example
```sql
SELECT
b.id
FROM
employees a
JOIN employees b USING (id)
WHERE
b.department = 'HR'
```
Since alias `b` won't exist after the optimization it is replaced with `a`.
This causes `TableReferences` to not be the same and the invariant fails
eventhough both of the alises refer to the same table.
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