alamb commented on issue #11653:
URL: https://github.com/apache/datafusion/issues/11653#issuecomment-2251189779

   I suggest coercing both timestamps to UTC 
   
   My rationale is that:
   1. To the best of my knowledge, there should be a 1->1 mapping from a 
timestamp in any timezone to UTC
   2. It is **not clear** to me that there is a 1->1 mapping from every 
timestamp in any timezone to a timestamp in any other timezone (like during DST 
conversion I think sometimes there are multiple times with the same UTC time in 
a ceratin timestamp)
   3. Since the coercion rules are for comparison (and will result in the 
output type `boolean`) I don't think the choice of UTC (over the given 
timezone) would affect the output of the query.


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