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Posted to github@arrow.apache.org by "2010YOUY01 (via GitHub)" <gi...@apache.org> on 2023/05/24 22:22:13 UTC

[GitHub] [arrow-rs] 2010YOUY01 commented on issue #3959: Support casting to/from different interval units (eg `YearDay` --> `MonthDayNano`, etc)

2010YOUY01 commented on issue #3959:
URL: https://github.com/apache/arrow-rs/issues/3959#issuecomment-1562003684

   The independence of fields inside `Interval` type makes it really tricky 🤔 
   Suppose a `DataType::Interval(IntervalUnit::MonthDayNano)` has value "1 months 40 days 0 nanos", and it's cast to `DataType::Interval(IntervalUnit::YearMonth)`, should it be truncated to "1 months" or "2 months"


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