jackwener commented on issue #4123:
URL:
https://github.com/apache/arrow-datafusion/issues/4123#issuecomment-1306769870
look like planner `sort` build wrong.
```sql
create table foo as select 1 as a;
select a from (select a from foo group by 1 order by a) as c;
Projection: c.a
Sort: foo.a ASC NULLS LAST
Projection: foo.a, alias=c
Aggregate: groupBy=[[foo.a]], aggr=[[]]
TableScan: foo
Projection: c.a
Projection: c.a, alias=c
Projection: c.a
Sort: foo.a ASC NULLS LAST
Projection: foo.a, alias=c
Aggregate: groupBy=[[foo.a]], aggr=[[]]
TableScan: foo
```
we should `Sort: c.a` instead of `Sort: foo.a`
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