andygrove opened a new issue, #3160:
URL: https://github.com/apache/arrow-datafusion/issues/3160
**Describe the bug**
## DataFusion 10.0 supports this query:
```
❯ select y.column_1 z, sum(column_2) q from x y group by y.column_1 order by
y.column_1;
+---+---+
| z | q |
+---+---+
| 1 | 2 |
+---+---+
```
## DataFusion master fails:
```
❯ select y.column_1 z, sum(column_2) q from x y group by y.column_1 order by
y.column_1;
SchemaError(FieldNotFound { qualifier: Some("y"), name: "column_1",
valid_fields: Some(["z", "q"]) })
```
**To Reproduce**
```
echo "1,2" > data.csv
create external table x stored as csv location 'data.csv';
```
**Expected behavior**
Query should work
**Additional context**
None
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