waitingkuo commented on issue #5651:
URL:
https://github.com/apache/arrow-datafusion/issues/5651#issuecomment-1482241768
hi @alamb this is great, `arrow_cast` to specific `IntervalUnit` is quite
helpful.
I'd like to know when the source doesn't feed into the interval , e.g.
```bash
select arrow_cast('1 second', 'Interval(YearMonth)');
```
do we just simply return a `0` or we should raise some warning or even err?
or when there're some ambiguities
```bash
select arrow_cast('1 month', 'Interval(DayTime)');
```
do we return `30 days` or we should raise an ambiguity error?
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