Jimexist edited a comment on issue #1195:
URL:
https://github.com/apache/arrow-datafusion/issues/1195#issuecomment-953949156
I don't think order by can be followed by a string literal, no?
[PostgreSQL won't allow it][1]
```
[postgres] # select 1 as c order by 'foo';
ERROR: 42601: non-integer constant in ORDER BY
LINE 1: select 1 as c order by 'foo';
^
LOCATION: findTargetlistEntrySQL92, parse_clause.c:2012
```
[1]: https://www.postgresql.org/docs/current/queries-order.html
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