MrPowers commented on pull request #29935:
URL: https://github.com/apache/spark/pull/29935#issuecomment-802289372


   @MaxGekk - thanks for pointing this out.  I wasn't aware of the 
`YearMonthIntervalType` / `DayTimeIntervalType`.
   
   Do you plan on building `make_year_month_interval` and 
`make_day_time_interval` SQL functions, similar to `make_interval`?
   
   When users do `col("time1")` - `col("time2")` will two values be returned?  
I understand the problem with `CalendarInterval` (thanks to your wonderful 
description in the JIRA) and want to better understand the user facing APIs 
with your new proposal.


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