l1t1 opened a new issue, #1131:
URL: https://github.com/apache/datafusion-python/issues/1131
**Describe the bug**
union all +aggregate function in the recursive cte results an infinite loop
**To Reproduce**
Steps to reproduce the behavior:
```python
import datafusion
from datafusion import SessionContext
ctx = SessionContext()
df = ctx.sql("""
with recursive t as(select value i,1 lv from generate_series(1,6,1)
union all
select max(i),max(lv)+1 from t where lv<2)
select * from t where lv=2;
""")
>>> print(df)
```
**Expected behavior**
it outputs
```
DataFrame()
+---+----+
| i | lv |
+---+----+
| 6 | 2 |
+---+----+
```
**Additional context**
Add any other context about the problem here.
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