alamb commented on PR #5140:
URL:
https://github.com/apache/arrow-datafusion/pull/5140#issuecomment-1412143332
> The downside for now is additional cast created sometimes for timestamp,
to convert Timestamp(_, Some("00:00")) to Timestamp(_, None). This can be
solved in separate PR if you dont mind as it might again require changes in
arrow-rs
I think this is correct (and needed) if the timestamps in question have
different timezones. It should not really effect runtime performance as I
expect both to be evaluated at plan time
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