alamb commented on issue #3100:
URL: 
https://github.com/apache/arrow-datafusion/issues/3100#issuecomment-1212534680

   Interval  Proposal
   
   > 1. Consider make INTERVAL xxx outputs Interval(MonthDayNano) instead of 
Interval(DayTime) as it's easier to align with our Timestamp(NanoSecond, None)
   
   Here is the spec in case that is interesting: 
https://github.com/apache/arrow/blob/master/format/Schema.fbs#L354-L372
   
   I think this is a good idea -- Interval(MonthDayNano) is a relatively new 
addition to the arrow standard, so I think DataFusion might default to 
`Interval(DayTime)` is because that was all that was available at the time of 
initial implementation.  
   
   >  2. Carefully design the outputs for operators like what postgresql has
   
   Agree
   
   > 3. we could think about whether we really need timestamp with time zone - 
timestamp ... this is what postgresql has
   
   I don't quite understand the question about "really need timestamp with time 
zone - timestamp" -- as I thought your proposal for timezones was to fill out 
the feature set for timestamp with timezone 🤔 
   
   
   


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