alamb commented on issue #5651:
URL:
https://github.com/apache/arrow-datafusion/issues/5651#issuecomment-1485852781
```
I'd like to know when the source doesn't feed into the interval , e.g.
select arrow_cast('1 second', 'Interval(YearMonth)');
do we just simply return a 0 or we should raise some warning or even err?
```
I think the best way to think of `arrow_cast` is as a way to invoke the
arrow `cast` kernel
So in your examples
```sql
select arrow_cast('1 second', 'Interval(YearMonth)');
```
That would invoke `cast(StringArray, IntervalYearMonthArray)`
```sql
select arrow_cast('1 month', 'Interval(DayTime)');
```
Basically this should be whatever the arrow kernel does (probably throw an
ambiguity error, but I am not sure)
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