l1t1 opened a new issue, #9319:
URL: https://github.com/apache/arrow-datafusion/issues/9319
### Describe the bug
I use sql() to explain an query, it raised an error.
`sql("explain analyze select 1")` also has the issue
### To Reproduce
```python
import datafusion
ctx=datafusion.SessionContext()
ctx.sql("explain select 1")
```
outputs
```
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
Exception: Internal error: Unsupported logical plan: Explain must be root of
the plan.
This was likely caused by a bug in DataFusion's code and we would welcome
that you file an bug report in our issue tracker
```
### Expected behavior
it output the plan of the query
### Additional context
_No response_
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