alexandrefimov opened a new issue, #26134:
URL: https://github.com/apache/datafusion/issues/26134
### Describe the bug
A GROUPING SETS query with 64 distinct grouping columns can panic during
execution, even when no grouping set is repeated.
`group_id_array` packs the duplicate ordinal using `ordinal << n`. With 64
columns and ordinal zero, this evaluates `0u64 << 64` and panics in a checked
build. The layout itself fits UInt64.
### To reproduce
Generate the SQL below and run its output in a debug DataFusion CLI:
```python
n = 64
cols = ", ".join(f"c{i} INTEGER" for i in range(n))
keys = ", ".join(f"c{i}" for i in range(n))
row = ", ".join(str(i + 1) for i in range(n))
print(f"CREATE TABLE wide_keys ({cols});")
print(f"INSERT INTO wide_keys VALUES ({row});")
print(f"SELECT COUNT(*) FROM wide_keys "
f"GROUP BY GROUPING SETS (({keys}), ());")
```
### Expected behavior
The query should return two rows, each with COUNT(*) = 1. Layouts requiring
more than 64 total bits should continue to return NotImplemented.
### Additional context
The shift overflow is confirmed by focused regression tests on commit
`102a1628592121d96bfe3d09d80e63180eef288a`. A fix and regression tests are
prepared locally; full qualification is still running.
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