RishavTiwari25 commented on issue #26223:
URL: https://github.com/apache/datafusion/issues/26223#issuecomment-6140056267

   That overflow case looks different from the reassociation one to me: every 
`x + 1e308` is exactly 0, so `SUM(x + 1e308)` is 0 in any summation order, 
while the rewritten form goes through `SUM(x) = -Infinity` and ends up `NaN`. 
The rewrite creates intermediate magnitudes the original expression never has. 
@alamb if you think that is worth guarding against, I can reopen #26241 with 
this overflow case as the test, the guard itself is the same.


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