westonpace commented on issue #35843:
URL: https://github.com/apache/arrow/issues/35843#issuecomment-1583575040

   Also, as an idle unrelated note, I've noticed that casting decimals seems to 
occupy a fair amount of our time in benchmarks.  It's possible this is correct 
(e.g. maybe this is just a RAM cost being paid for our first traversal through 
the actual data) but I wonder if combining the cast and the math operation in 
this case is something that would be possible and save time?


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