zclllyybb commented on PR #57234:
URL: https://github.com/apache/doris/pull/57234#issuecomment-3447386172

   > Hi @zclllyybb @yiguolei If you have time, could you please take a look at 
this PR? The failing tests now pass on my local machine.
   
   Hi @KeeProMise , thanks for your contribution! In this PR you actually 
modified the logic of function `str_to_date`, right?
   so,
   1. could you add a stacktrace or something to explain how the functions' 
behaviour of the two weird format input affects the mv? @zddr @seawinde do you 
have more information?
   2. `select STR_TO_DATE('202501', '%Y%m');` is also not supported by MySQL. 
so I'm not sure if this fix is proper. same to the point 1, I want firstly 
figure out if there's some way more directly to fix your problem.
   3. if we decide to accept this patch, you should add some regression 
testcases using `testFoldConst` to make sure the behaviour has no diff between 
BE and FE.


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