alamb commented on issue #5471:
URL:
https://github.com/apache/arrow-datafusion/issues/5471#issuecomment-1675386247
I just tested this out after
https://github.com/apache/arrow-datafusion/pull/7262 was merged and the
functions still don't work for arrays it seems:
```sql
create table foo(x varchar) as values ('foo'), ('bar');
create table foo_dict as select arrow_cast(x, 'Dictionary(Int32, Utf8)') as
x from foo;
select upper(x) from foo_dict;
```
Results in an internal error:
```
DataFusion CLI v28.0.0
❯ create table foo(x varchar) as values ('foo'), ('bar');
create table foo_dict as select arrow_cast(x, 'Dictionary(Int32, Utf8)') as
x from foo;
select upper(x) from foo_dict;
0 rows in set. Query took 0.034 seconds.
0 rows in set. Query took 0.039 seconds.
Internal error: The "upper" function can only accept strings.. This was
likely caused by a bug in DataFusion's code and we would welcome that you file
an bug report in our issue tracker
````
So I think https://github.com/apache/arrow-datafusion/pull/7262 made things
better but there is still something not working
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