mkmik commented on issue #2867:
URL:
https://github.com/apache/arrow-datafusion/issues/2867#issuecomment-1305401887
I stumbled upon a bug that may be a simpler reproducer of this
```console
❯ select a from (select a from (select 1 as a) as foo group by 1 order by a)
as c;
SchemaError(FieldNotFound { field: Column { relation: Some("foo"), name: "a"
}, valid_fields: Some([Column { relation: Some("c"), name: "a" }]) })
```
----
Interestingly if I remove as c in the outer expression it works:
```console
❯ select a from (select a from (select 1 as a) as foo group by 1 order by a);
+---+
| a |
+---+
| 1 |
+---+
1 row in set. Query took 0.005 seconds.
```
It's also interesting that using positional column references in the order
by works:
```console
❯ select a from (select a from (select 1 as a) as foo group by 1 order by 1)
as c;
+---+
| a |
+---+
| 1 |
+---+
1 row in set. Query took 0.005 seconds.
```
Furthermore, the bug reproduces only if `group by a` and `order by a` are
*both* present:
```console
❯ select a from (select a from (select 1 as a) as foo group by a) as c;
+---+
| a |
+---+
| 1 |
+---+
1 row in set. Query took 0.005 seconds.
❯ select a from (select a from (select 1 as a) as foo order by a) as c;
+---+
| a |
+---+
| 1 |
+---+
1 row in set. Query took 0.004 seconds.
```
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