[GitHub] [arrow-datafusion] jackwener commented on issue #6596: simplify_expressions return expression with wrong type.

["jackwener (via GitHub)" <gi...@apache.org>]

jackwener commented on issue #6596:
URL: https://github.com/apache/arrow-datafusion/issues/6596#issuecomment-1582112533

   ```sql
   SELECT DATE_TRUNC('MINUTE', TIMESTAMP '2022-08-03 14:38:50Z');
   
   "Projection: date_trunc(Utf8("MINUTE"), CAST(Utf8("2022-08-03 14:38:50Z") AS Timestamp(Nanosecond, None)))
     EmptyRelation"
   -->
   "Projection: TimestampSecond(1659537480, None) AS date_trunc(Utf8("MINUTE"),Utf8("2022-08-03 14:38:50Z"))
     EmptyRelation"
   ```
   
   expr type from timestamp nanosecond -> timestamp second.


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