englefly opened a new pull request, #22064:
URL: https://github.com/apache/doris/pull/22064

   ## Proposed changes
   columnStatistics.minExpr and maxExpr is useful when we derive stats for cast 
function. 
   This pr 
   1. maintains the min/max expr during stats derive. (now only support cast 
from string to other types)
   2. adjust column stats range after filter
   
   Issue Number: close #xxx
   
   <!--Describe your changes.-->
   
   ## Further comments
   
   If this is a relatively large or complex change, kick off the discussion at 
[d...@doris.apache.org](mailto:d...@doris.apache.org) by explaining why you 
chose the solution you did and what alternatives you considered, etc...
   
   


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