findepi opened a new issue, #12291:
URL: https://github.com/apache/datafusion/issues/12291
### Describe the bug
`Int64` and `timestamp with time zone` are not coercible:
```
> SELECT 2 x UNION ALL SELECT now() x;
type_coercion
caused by
Error during planning: Incompatible inputs for Union: Previous inputs were
of type Int64, but got incompatible type Timestamp(Nanosecond, Some("+00:00"))
on column 'x'
```
yet, the arrays of these types are
```
> SELECT make_array(2) x UNION ALL SELECT make_array(now()) x;
+-----------------------+
| x |
+-----------------------+
| [2] |
| [1725282161929740000] |
+-----------------------+
```
```
> SELECT make_array(now()) x UNION ALL SELECT make_array(2) x;
+----------------------------------+
| x |
+----------------------------------+
| [1970-01-01T00:00:00.000000002Z] |
| [2024-09-02T13:03:02.257080Z] |
+----------------------------------+
```
### To Reproduce
```
SELECT make_array(2) x UNION ALL SELECT make_array(now()) x;
```
### Expected behavior
Failure, because array element types cannot be coerced.
### Additional context
_No response_
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